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    <link:label id="lab_us-gaap_FairValueInputsLevel1Member_E0AFF6982C3D2B9571DB6B82E7CD6C90_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_E0AFF6982C3D2B9571DB6B82E7CD6C90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 1 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_E0AFF6982C3D2B9571DB6B82E7CD6C90" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel1Member_E0AFF6982C3D2B9571DB6B82E7CD6C90" xlink:to="lab_us-gaap_FairValueInputsLevel1Member_E0AFF6982C3D2B9571DB6B82E7CD6C90" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueInputsLevel2Member_776C176741FA7778B4C46B82E7CEB184_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_776C176741FA7778B4C46B82E7CEB184" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Significant other observable inputs (Level 2)</link:label>
    <link:label id="lab_us-gaap_FairValueInputsLevel2Member_776C176741FA7778B4C46B82E7CEB184_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_776C176741FA7778B4C46B82E7CEB184" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 2 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_776C176741FA7778B4C46B82E7CEB184" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel2Member_776C176741FA7778B4C46B82E7CEB184" xlink:to="lab_us-gaap_FairValueInputsLevel2Member_776C176741FA7778B4C46B82E7CEB184" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueInputsLevel3Member_C48880AB89B37198A96E6B82E7CE01F7_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_C48880AB89B37198A96E6B82E7CE01F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Significant unobservable input (Level 3)</link:label>
    <link:label id="lab_us-gaap_FairValueInputsLevel3Member_C48880AB89B37198A96E6B82E7CE01F7_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_C48880AB89B37198A96E6B82E7CE01F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Inputs, Level 3 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_C48880AB89B37198A96E6B82E7CE01F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel3Member_C48880AB89B37198A96E6B82E7CE01F7" xlink:to="lab_us-gaap_FairValueInputsLevel3Member_C48880AB89B37198A96E6B82E7CE01F7" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0150409A9E9C68F6BE96B82E7CE02C1_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0150409A9E9C68F6BE96B82E7CE02C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan Disclosure [Line Items]</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0150409A9E9C68F6BE96B82E7CE02C1_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0150409A9E9C68F6BE96B82E7CE02C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan Disclosure [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0150409A9E9C68F6BE96B82E7CE02C1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0150409A9E9C68F6BE96B82E7CE02C1" xlink:to="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0150409A9E9C68F6BE96B82E7CE02C1" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_37EB048CD6BD4857B6006B82E7CEED47_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_37EB048CD6BD4857B6006B82E7CEED47" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value of plan assets</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_37EB048CD6BD4857B6006B82E7CEED47_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_37EB048CD6BD4857B6006B82E7CEED47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Fair Value of Plan Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_37EB048CD6BD4857B6006B82E7CEED47" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_37EB048CD6BD4857B6006B82E7CEED47" xlink:to="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_37EB048CD6BD4857B6006B82E7CEED47" xlink:type="arc" />
    <link:label id="lab_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D_terseLabel_en-US" xlink:label="lab_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment commitment</link:label>
    <link:label id="lab_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D_label_en-US" xlink:label="lab_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Commitment</link:label>
    <link:label id="lab_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D_documentation_en-US" xlink:label="lab_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commitment to invest in private equity securities.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_InvestmentCommitment" xlink:label="loc_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D" xlink:to="lab_pkg_InvestmentCommitment_2284E63000A45A9D829D6B82E7CED17D" xlink:type="arc" />
    <link:label id="lab_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D_terseLabel_en-US" xlink:label="lab_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unfunded portion of investment commitment</link:label>
    <link:label id="lab_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D_label_en-US" xlink:label="lab_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unfunded Portion of Investment Commitment</link:label>
    <link:label id="lab_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D_documentation_en-US" xlink:label="lab_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unfunded portion of commitment to invest in private equity securities.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_UnfundedPortionofInvestmentCommitment" xlink:label="loc_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D" xlink:to="lab_pkg_UnfundedPortionofInvestmentCommitment_95699211EFEEAAD61E186B82E7CE987D" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_2E356CE0522D9EE8076B6B82E7CE7A56_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_2E356CE0522D9EE8076B6B82E7CE7A56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Level 3 fair value of pension plans' assets [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_2E356CE0522D9EE8076B6B82E7CE7A56_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_2E356CE0522D9EE8076B6B82E7CE7A56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_2E356CE0522D9EE8076B6B82E7CE7A56" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_2E356CE0522D9EE8076B6B82E7CE7A56" xlink:to="lab_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_2E356CE0522D9EE8076B6B82E7CE7A56" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D09F9E75F47D97A7F94F6B82E7CE1922_periodStartLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D09F9E75F47D97A7F94F6B82E7CE1922" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Plan assets at fair value at beginning of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D09F9E75F47D97A7F94F6B82E7CE1922" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D09F9E75F47D97A7F94F6B82E7CE1922" xlink:to="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D09F9E75F47D97A7F94F6B82E7CE1922" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan_B5F7737A4BEFFA91903F6B82E7CE9DDD_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan_B5F7737A4BEFFA91903F6B82E7CE9DDD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisitions</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan_B5F7737A4BEFFA91903F6B82E7CE9DDD_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan_B5F7737A4BEFFA91903F6B82E7CE9DDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Assets Transferred to (from) Plan</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan_B5F7737A4BEFFA91903F6B82E7CE9DDD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan_B5F7737A4BEFFA91903F6B82E7CE9DDD" xlink:to="lab_us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan_B5F7737A4BEFFA91903F6B82E7CE9DDD" xlink:type="arc" />
    <link:label id="lab_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2_terseLabel_en-US" xlink:label="lab_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchases</link:label>
    <link:label id="lab_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2_label_en-US" xlink:label="lab_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan Purchases</link:label>
    <link:label id="lab_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2_documentation_en-US" xlink:label="lab_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Purchases of plan assets that occured during the period.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_DefinedBenefitPlanPurchases" xlink:label="loc_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2" xlink:to="lab_pkg_DefinedBenefitPlanPurchases_6E9B45F0E0B71F40A5446B82E7CE8CF2" xlink:type="arc" />
    <link:label id="lab_pkg_DefinedBenefitPlanSales_7F2F7C0F18BD4FAAA68E6B82E7CE31FF_terseLabel_en-US" xlink:label="lab_pkg_DefinedBenefitPlanSales_7F2F7C0F18BD4FAAA68E6B82E7CE31FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales</link:label>
    <link:label id="lab_pkg_DefinedBenefitPlanSales_7F2F7C0F18BD4FAAA68E6B82E7CE31FF_label_en-US" xlink:label="lab_pkg_DefinedBenefitPlanSales_7F2F7C0F18BD4FAAA68E6B82E7CE31FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan Sales</link:label>
    <link:label id="lab_pkg_DefinedBenefitPlanSales_7F2F7C0F18BD4FAAA68E6B82E7CE31FF_documentation_en-US" xlink:label="lab_pkg_DefinedBenefitPlanSales_7F2F7C0F18BD4FAAA68E6B82E7CE31FF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sales of plan assets that occured during the period.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_DefinedBenefitPlanSales" xlink:label="loc_pkg_DefinedBenefitPlanSales_7F2F7C0F18BD4FAAA68E6B82E7CE31FF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_3F51C64001ED7AD9662A6B82E7CE1027_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_3F51C64001ED7AD9662A6B82E7CE1027" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized gain</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_3F51C64001ED7AD9662A6B82E7CE1027" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_43714AA47213370A0B516B82E7CEB55C_periodEndLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_43714AA47213370A0B516B82E7CEB55C" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Fair value of plan assets at plan year end</link:label>
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    <link:label id="lab_us-gaap_CapitalLeaseObligationsNoncurrent_88D2B8CED7A6B07FE5146A48E3FEC7AA_verboseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsNoncurrent_88D2B8CED7A6B07FE5146A48E3FEC7AA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total long-term capital lease obligations</link:label>
    <link:label id="lab_us-gaap_CapitalLeaseObligationsNoncurrent_88D2B8CED7A6B07FE5146A48E3FEC7AA_label_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsNoncurrent_88D2B8CED7A6B07FE5146A48E3FEC7AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Lease Obligations, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeaseObligationsNoncurrent" xlink:label="loc_us-gaap_CapitalLeaseObligationsNoncurrent_88D2B8CED7A6B07FE5146A48E3FEC7AA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeaseObligationsNoncurrent_88D2B8CED7A6B07FE5146A48E3FEC7AA" xlink:to="lab_us-gaap_CapitalLeaseObligationsNoncurrent_88D2B8CED7A6B07FE5146A48E3FEC7AA" xlink:type="arc" />
    <link:label id="lab_pkg_DisclosureScheduleOfPurchaseCommitmentsAbstract_0E0D1951BF6D5BD92A00562EFB02C2AF_label_en-US" xlink:label="lab_pkg_DisclosureScheduleOfPurchaseCommitmentsAbstract_0E0D1951BF6D5BD92A00562EFB02C2AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Schedule Of Purchase Commitments [Abstract]</link:label>
    <link:label id="lab_pkg_DisclosureScheduleOfPurchaseCommitmentsAbstract_0E0D1951BF6D5BD92A00562EFB02C2AF_documentation_en-US" xlink:label="lab_pkg_DisclosureScheduleOfPurchaseCommitmentsAbstract_0E0D1951BF6D5BD92A00562EFB02C2AF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure - Schedule of Purchase Commitments [Abstract]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_DisclosureScheduleOfPurchaseCommitmentsAbstract" xlink:label="loc_pkg_DisclosureScheduleOfPurchaseCommitmentsAbstract_0E0D1951BF6D5BD92A00562EFB02C2AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_DisclosureScheduleOfPurchaseCommitmentsAbstract_0E0D1951BF6D5BD92A00562EFB02C2AF" xlink:to="lab_pkg_DisclosureScheduleOfPurchaseCommitmentsAbstract_0E0D1951BF6D5BD92A00562EFB02C2AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentTable_37E7A2C8259F1B1FBDF3562EFB021BA5_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentTable_37E7A2C8259F1B1FBDF3562EFB021BA5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Purchase Commitment [Table]</link:label>
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentTable_37E7A2C8259F1B1FBDF3562EFB021BA5_label_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentTable_37E7A2C8259F1B1FBDF3562EFB021BA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Purchase Commitment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermPurchaseCommitmentTable" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentTable_37E7A2C8259F1B1FBDF3562EFB021BA5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_37E7A2C8259F1B1FBDF3562EFB021BA5" xlink:to="lab_us-gaap_LongTermPurchaseCommitmentTable_37E7A2C8259F1B1FBDF3562EFB021BA5" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentLineItems_B13AE1BA4A8613DBB303562EFB02FF2E_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentLineItems_B13AE1BA4A8613DBB303562EFB02FF2E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Purchase Commitment [Line Items]</link:label>
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentLineItems_B13AE1BA4A8613DBB303562EFB02FF2E_label_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentLineItems_B13AE1BA4A8613DBB303562EFB02FF2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Purchase Commitment [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermPurchaseCommitmentLineItems" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentLineItems_B13AE1BA4A8613DBB303562EFB02FF2E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_B13AE1BA4A8613DBB303562EFB02FF2E" xlink:to="lab_us-gaap_LongTermPurchaseCommitmentLineItems_B13AE1BA4A8613DBB303562EFB02FF2E" xlink:type="arc" />
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8_terseLabel_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2014</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8_label_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Purchase Commitment Amount Due Within One Year</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8_documentation_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The minimum amount the entity agreed to spend under the long-term purchase commitment in the first year after the balance sheet date.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear" xlink:label="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8" xlink:to="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear_F1BCACCFF7F111742FB0562EFB021EC8" xlink:type="arc" />
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288_terseLabel_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2015</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288_label_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Purchase Commitment Amount Due Within Two Years</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288_documentation_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The minimum amount the entity agreed to spend under the long-term purchase commitment in the second year after the balance sheet date.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears" xlink:label="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288" xlink:to="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears_4B2BA52571B4450088D7562EFB020288" xlink:type="arc" />
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73_terseLabel_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73_label_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Purchase Commitment Amount Due Within Three Years</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73_documentation_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The minimum amount the entity agreed to spend under the long-term purchase commitment in the third year after the balance sheet date.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears" xlink:label="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73" xlink:to="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears_DDBDD016BCEE7826C469562EFB024E73" xlink:type="arc" />
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4_terseLabel_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4_label_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Purchase Commitment Amount Due Within Four Years</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4_documentation_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The minimum amount the entity agreed to spend under the long-term purchase commitment in the fourth year after the balance sheet date.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears" xlink:label="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4" xlink:to="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears_DC94A5060E3FBC4D0E5E562EFB0223B4" xlink:type="arc" />
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193_terseLabel_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193_label_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Purchase Commitment Amount Due Within Five Years</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193_documentation_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The minimum amount the entity agreed to spend under the long-term purchase commitment in the fifth year after the balance sheet date.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears" xlink:label="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193" xlink:to="lab_pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears_12682126897E1BA86423562EFB039193" xlink:type="arc" />
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D_terseLabel_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D_label_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Purchase Commitment Amount Due Thereafter</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D_documentation_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The minimum amount the entity agreed to spend under the long-term purchase commitment after the fifth year after the balance sheet date.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LongTermPurchaseCommitmentAmountDueThereafter" xlink:label="loc_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D" xlink:to="lab_pkg_LongTermPurchaseCommitmentAmountDueThereafter_A29CE4E62B2E9D62C838562EFB03509D" xlink:type="arc" />
    <link:label id="lab_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F_totalLabel_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F_label_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Purchase Commitment Future Minimum Payments Due</link:label>
    <link:label id="lab_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F_documentation_en-US" xlink:label="lab_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The total of contractually required payments on long-term purchase commitments.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue" xlink:label="loc_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F" xlink:to="lab_pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue_A64C325174EAEEF733CA562EFB03177F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_401F9A40FD4C2FDEBACB562EFAFE1C14_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_401F9A40FD4C2FDEBACB562EFAFE1C14" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Quarterly Financial Data</link:label>
    <link:label id="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_401F9A40FD4C2FDEBACB562EFAFE1C14_label_en-US" xlink:label="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_401F9A40FD4C2FDEBACB562EFAFE1C14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Quarterly Financial Information [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_401F9A40FD4C2FDEBACB562EFAFE1C14" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_401F9A40FD4C2FDEBACB562EFAFE1C14" xlink:to="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_401F9A40FD4C2FDEBACB562EFAFE1C14" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureAbstract_1D3044C6419CEB7D663B6C0D7B11EE50_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureAbstract_1D3044C6419CEB7D663B6C0D7B11EE50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_1D3044C6419CEB7D663B6C0D7B11EE50" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_1D3044C6419CEB7D663B6C0D7B11EE50" xlink:to="lab_us-gaap_IncomeTaxDisclosureAbstract_1D3044C6419CEB7D663B6C0D7B11EE50" xlink:type="arc" />
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    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_A80743940FB6E240B70C666E9DF20D44_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_A80743940FB6E240B70C666E9DF20D44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_A80743940FB6E240B70C666E9DF20D44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_A80743940FB6E240B70C666E9DF20D44" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_A80743940FB6E240B70C666E9DF20D44" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_A2FACD23AEEC732C8CD2666E9DF21164_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_A2FACD23AEEC732C8CD2666E9DF21164" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total recognized in other comprehensive (income) loss (b)</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_A2FACD23AEEC732C8CD2666E9DF21164_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_A2FACD23AEEC732C8CD2666E9DF21164" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_A2FACD23AEEC732C8CD2666E9DF21164" xlink:type="locator" />
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    <link:label id="lab_pkg_TotalRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_31270A633AA09CE76912666E9DF2DBFF_totalLabel_en-US" xlink:label="lab_pkg_TotalRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_31270A633AA09CE76912666E9DF2DBFF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total recognized in net periodic benefit cost and other comprehensive (income) loss</link:label>
    <link:label id="lab_pkg_TotalRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_31270A633AA09CE76912666E9DF2DBFF_label_en-US" xlink:label="lab_pkg_TotalRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_31270A633AA09CE76912666E9DF2DBFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total recognized in net periodic benefit cost and other comprehensive income (loss)</link:label>
    <link:label id="lab_pkg_TotalRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_31270A633AA09CE76912666E9DF2DBFF_documentation_en-US" xlink:label="lab_pkg_TotalRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_31270A633AA09CE76912666E9DF2DBFF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The total amount of net periodic benefit cost for defined benefit plans for the period and amounts recognized in other comprehensive income (but not yet recognized in net periodic benefit cost).</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_TotalRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss" xlink:label="loc_pkg_TotalRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_31270A633AA09CE76912666E9DF2DBFF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_C99C68E62509EF6FBA59666E9DF2B784_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_C99C68E62509EF6FBA59666E9DF2B784" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Net Periodic Benefit Cost and Amortization of Other Comprehensive Income for The Next Year</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_C99C68E62509EF6FBA59666E9DF2B784_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_C99C68E62509EF6FBA59666E9DF2B784" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_C99C68E62509EF6FBA59666E9DF2B784" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_C99C68E62509EF6FBA59666E9DF2B784" xlink:to="lab_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_C99C68E62509EF6FBA59666E9DF2B784" xlink:type="arc" />
    <link:label id="lab_us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit_D9506CF4C00492277135666E9DF2D47C_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit_D9506CF4C00492277135666E9DF2D47C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated net periodic benefit cost for 2014</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit_D9506CF4C00492277135666E9DF2D47C_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit_D9506CF4C00492277135666E9DF2D47C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit_D9506CF4C00492277135666E9DF2D47C" xlink:type="locator" />
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    <link:label id="lab_pkg_DisclosureChangesInCarryingAmountOfGoodwillAbstract_FEDF1951664DE10A081D5A6D01279881_label_en-US" xlink:label="lab_pkg_DisclosureChangesInCarryingAmountOfGoodwillAbstract_FEDF1951664DE10A081D5A6D01279881" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Changes In Carrying Amount Of Goodwill [Abstract]</link:label>
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    <link:loc xlink:href="pkg-20131231.xsd#pkg_DisclosureChangesInCarryingAmountOfGoodwillAbstract" xlink:label="loc_pkg_DisclosureChangesInCarryingAmountOfGoodwillAbstract_FEDF1951664DE10A081D5A6D01279881" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_F9A55BE59D3B2D3D4F525A6D0127F83D_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_F9A55BE59D3B2D3D4F525A6D0127F83D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
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    <link:label id="lab_pkg_DamagePreventionCompanyMember_D8679069CC2510CA65225A6D0127084F_terseLabel_en-US" xlink:label="lab_pkg_DamagePreventionCompanyMember_D8679069CC2510CA65225A6D0127084F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Damage Prevention Company</link:label>
    <link:label id="lab_pkg_DamagePreventionCompanyMember_D8679069CC2510CA65225A6D0127084F_label_en-US" xlink:label="lab_pkg_DamagePreventionCompanyMember_D8679069CC2510CA65225A6D0127084F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Damage Prevention Company [Member]</link:label>
    <link:label id="lab_pkg_DamagePreventionCompanyMember_D8679069CC2510CA65225A6D0127084F_documentation_en-US" xlink:label="lab_pkg_DamagePreventionCompanyMember_D8679069CC2510CA65225A6D0127084F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Damage Prevention Company [Member]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_DamagePreventionCompanyMember" xlink:label="loc_pkg_DamagePreventionCompanyMember_D8679069CC2510CA65225A6D0127084F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_FACB208AB806CA542FA15A6D012779AB_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_FACB208AB806CA542FA15A6D012779AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Segments [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_FACB208AB806CA542FA15A6D012779AB_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_FACB208AB806CA542FA15A6D012779AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
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    <link:label id="lab_us-gaap_SegmentDomain_4AD43C946C02C0CB3CD85A6D01289A54_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_4AD43C946C02C0CB3CD85A6D01289A54" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment [Domain]</link:label>
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    <link:label id="lab_pkg_PackagingMember_1B28F55850687412C3035A6D01284011_terseLabel_en-US" xlink:label="lab_pkg_PackagingMember_1B28F55850687412C3035A6D01284011" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Packaging</link:label>
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    <link:label id="lab_pkg_PaperMember_B8C21BF2C4AE9F5BCDF35A6D012847FA_terseLabel_en-US" xlink:label="lab_pkg_PaperMember_B8C21BF2C4AE9F5BCDF35A6D012847FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Paper</link:label>
    <link:label id="lab_pkg_PaperMember_B8C21BF2C4AE9F5BCDF35A6D012847FA_label_en-US" xlink:label="lab_pkg_PaperMember_B8C21BF2C4AE9F5BCDF35A6D012847FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Paper [Member]</link:label>
    <link:label id="lab_pkg_PaperMember_B8C21BF2C4AE9F5BCDF35A6D012847FA_documentation_en-US" xlink:label="lab_pkg_PaperMember_B8C21BF2C4AE9F5BCDF35A6D012847FA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reportable segment - Paper.</link:label>
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    <link:label id="lab_us-gaap_GoodwillLineItems_0E514B9B7C3FE09087645A6D0128D716_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_0E514B9B7C3FE09087645A6D0128D716" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
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    <link:label id="lab_us-gaap_OtherOperatingIncomeExpenseNet_4BCA483A4C4A270078D96B14D3D23367_terseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingIncomeExpenseNet_4BCA483A4C4A270078D96B14D3D23367" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other expense, net</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_416EF67B2270675062E86C39BA1FA5E5_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_416EF67B2270675062E86C39BA1FA5E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2014</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0AF439B5AE08B81BD3E86C39BA1F81B9_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0AF439B5AE08B81BD3E86C39BA1F81B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2015</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_F79FA56A19625691598F6EC56FD54936_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_F79FA56A19625691598F6EC56FD54936" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2015</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_F79FA56A19625691598F6EC56FD54936" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_5EFAC1D1609A7E7C541E6EC56FD53794_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_5EFAC1D1609A7E7C541E6EC56FD53794" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_CB3C18E4770AD5904EFF747E4466E35F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_CB3C18E4770AD5904EFF747E4466E35F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
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    <link:label id="lab_pkg_TermloanDueOctober2020Member_B5DE40E57C32F09756A8747E44668E74_label_en-US" xlink:label="lab_pkg_TermloanDueOctober2020Member_B5DE40E57C32F09756A8747E44668E74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Term loan, Due October 2020 [Member]</link:label>
    <link:label id="lab_pkg_TermloanDueOctober2020Member_B5DE40E57C32F09756A8747E44668E74_documentation_en-US" xlink:label="lab_pkg_TermloanDueOctober2020Member_B5DE40E57C32F09756A8747E44668E74" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Term loan, Due October 2020 [Member]</link:label>
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    <link:label id="lab_pkg_TermloanDueOctober2018Member_F3D0D60DA62DB0BC62E4747E44676199_label_en-US" xlink:label="lab_pkg_TermloanDueOctober2018Member_F3D0D60DA62DB0BC62E4747E44676199" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Term loan, Due October 2018 [Member]</link:label>
    <link:label id="lab_pkg_TermloanDueOctober2018Member_F3D0D60DA62DB0BC62E4747E44676199_documentation_en-US" xlink:label="lab_pkg_TermloanDueOctober2018Member_F3D0D60DA62DB0BC62E4747E44676199" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Term loan, Due October 2018 [Member]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_TermloanDueOctober2018Member" xlink:label="loc_pkg_TermloanDueOctober2018Member_F3D0D60DA62DB0BC62E4747E44676199" xlink:type="locator" />
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    <link:label id="lab_pkg_FiveYearandSevenYearTermLoansdueOctober2018and2020respectivelyMember_F9734AFA269FB26871E4747E4467A57D_label_en-US" xlink:label="lab_pkg_FiveYearandSevenYearTermLoansdueOctober2018and2020respectivelyMember_F9734AFA269FB26871E4747E4467A57D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Five-Year and Seven-Year Term Loans, due October 2018 and 2020, respectively [Member]</link:label>
    <link:label id="lab_pkg_FiveYearandSevenYearTermLoansdueOctober2018and2020respectivelyMember_F9734AFA269FB26871E4747E4467A57D_documentation_en-US" xlink:label="lab_pkg_FiveYearandSevenYearTermLoansdueOctober2018and2020respectivelyMember_F9734AFA269FB26871E4747E4467A57D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five-Year and Seven-Year Term Loans, due October 2018 and 2020, respectively [Member]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_FiveYearandSevenYearTermLoansdueOctober2018and2020respectivelyMember" xlink:label="loc_pkg_FiveYearandSevenYearTermLoansdueOctober2018and2020respectivelyMember_F9734AFA269FB26871E4747E4467A57D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_424FB284A91B8F0C028F747E446716CF_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_424FB284A91B8F0C028F747E446716CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_424FB284A91B8F0C028F747E446716CF_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_424FB284A91B8F0C028F747E446716CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_424FB284A91B8F0C028F747E446716CF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_1AA1EDDC875CE5B2B347747E44671191_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_1AA1EDDC875CE5B2B347747E44671191" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_1AA1EDDC875CE5B2B347747E44671191_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_1AA1EDDC875CE5B2B347747E44671191" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_1AA1EDDC875CE5B2B347747E44671191" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_1AA1EDDC875CE5B2B347747E44671191" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_1AA1EDDC875CE5B2B347747E44671191" xlink:type="arc" />
    <link:label id="lab_pkg_A4.50SeniorNotesDueNovember2023Member_CC1AD4A05C3332F554E5747E44671E48_terseLabel_en-US" xlink:label="lab_pkg_A4.50SeniorNotesDueNovember2023Member_CC1AD4A05C3332F554E5747E44671E48" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">4.50% Senior Notes, due November 2023</link:label>
    <link:label id="lab_pkg_A4.50SeniorNotesDueNovember2023Member_CC1AD4A05C3332F554E5747E44671E48_label_en-US" xlink:label="lab_pkg_A4.50SeniorNotesDueNovember2023Member_CC1AD4A05C3332F554E5747E44671E48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">4.50% Senior Notes, Due November 2023 [Member]</link:label>
    <link:label id="lab_pkg_A4.50SeniorNotesDueNovember2023Member_CC1AD4A05C3332F554E5747E44671E48_documentation_en-US" xlink:label="lab_pkg_A4.50SeniorNotesDueNovember2023Member_CC1AD4A05C3332F554E5747E44671E48" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">4.50% Senior Notes, Due November 2023 [Member]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_A4.50SeniorNotesDueNovember2023Member" xlink:label="loc_pkg_A4.50SeniorNotesDueNovember2023Member_CC1AD4A05C3332F554E5747E44671E48" xlink:type="locator" />
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    <link:label id="lab_pkg_DebtIncurredinBoiseAcquisitionMember_6F9F11A4420445C73409747E446722DD_terseLabel_en-US" xlink:label="lab_pkg_DebtIncurredinBoiseAcquisitionMember_6F9F11A4420445C73409747E446722DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Incurred in Boise Acquisition</link:label>
    <link:label id="lab_pkg_DebtIncurredinBoiseAcquisitionMember_6F9F11A4420445C73409747E446722DD_label_en-US" xlink:label="lab_pkg_DebtIncurredinBoiseAcquisitionMember_6F9F11A4420445C73409747E446722DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Incurred in Boise Acquisition [Member]</link:label>
    <link:label id="lab_pkg_DebtIncurredinBoiseAcquisitionMember_6F9F11A4420445C73409747E446722DD_documentation_en-US" xlink:label="lab_pkg_DebtIncurredinBoiseAcquisitionMember_6F9F11A4420445C73409747E446722DD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Incurred in Boise Acquisition [Member]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_DebtIncurredinBoiseAcquisitionMember" xlink:label="loc_pkg_DebtIncurredinBoiseAcquisitionMember_6F9F11A4420445C73409747E446722DD" xlink:type="locator" />
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    <link:label id="lab_pkg_SeniorNotesThreePointNinePercentageSeniorNotesMember_04CC5C2B387C4F801C6C747E44672118_terseLabel_en-US" xlink:label="lab_pkg_SeniorNotesThreePointNinePercentageSeniorNotesMember_04CC5C2B387C4F801C6C747E44672118" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3.90% Senior Notes, due June 2022</link:label>
    <link:label id="lab_pkg_SeniorNotesThreePointNinePercentageSeniorNotesMember_04CC5C2B387C4F801C6C747E44672118_label_en-US" xlink:label="lab_pkg_SeniorNotesThreePointNinePercentageSeniorNotesMember_04CC5C2B387C4F801C6C747E44672118" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes Three Point Nine Percentage Senior Notes [Member]</link:label>
    <link:label id="lab_pkg_SeniorNotesThreePointNinePercentageSeniorNotesMember_04CC5C2B387C4F801C6C747E44672118_documentation_en-US" xlink:label="lab_pkg_SeniorNotesThreePointNinePercentageSeniorNotesMember_04CC5C2B387C4F801C6C747E44672118" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior Notes Three Point Nine Percentage Senior Notes [Member]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_SeniorNotesThreePointNinePercentageSeniorNotesMember" xlink:label="loc_pkg_SeniorNotesThreePointNinePercentageSeniorNotesMember_04CC5C2B387C4F801C6C747E44672118" xlink:type="locator" />
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    <link:label id="lab_pkg_SeniorNotesFivePointSevenFivePercentageSeniorNotesMember_67584A4D4782C326440A747E44674CAB_terseLabel_en-US" xlink:label="lab_pkg_SeniorNotesFivePointSevenFivePercentageSeniorNotesMember_67584A4D4782C326440A747E44674CAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.75% Senior Notes, due August 2013</link:label>
    <link:label id="lab_pkg_SeniorNotesFivePointSevenFivePercentageSeniorNotesMember_67584A4D4782C326440A747E44674CAB_label_en-US" xlink:label="lab_pkg_SeniorNotesFivePointSevenFivePercentageSeniorNotesMember_67584A4D4782C326440A747E44674CAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes Five Point Seven Five Percentage Senior Notes [Member]</link:label>
    <link:label id="lab_pkg_SeniorNotesFivePointSevenFivePercentageSeniorNotesMember_67584A4D4782C326440A747E44674CAB_documentation_en-US" xlink:label="lab_pkg_SeniorNotesFivePointSevenFivePercentageSeniorNotesMember_67584A4D4782C326440A747E44674CAB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior notes five point seven five percentage senior notes.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_SeniorNotesFivePointSevenFivePercentageSeniorNotesMember" xlink:label="loc_pkg_SeniorNotesFivePointSevenFivePercentageSeniorNotesMember_67584A4D4782C326440A747E44674CAB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentLineItems_10E4B3459550CFCCEE20747E4467EFA8_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_10E4B3459550CFCCEE20747E4467EFA8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_10E4B3459550CFCCEE20747E4467EFA8_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_10E4B3459550CFCCEE20747E4467EFA8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_10E4B3459550CFCCEE20747E4467EFA8" xlink:type="locator" />
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    <link:label id="lab_pkg_NewDebtInstruments_41C99C88C882DFB064F9747E4467E85A_terseLabel_en-US" xlink:label="lab_pkg_NewDebtInstruments_41C99C88C882DFB064F9747E4467E85A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">New borrowings and new credit facility</link:label>
    <link:label id="lab_pkg_NewDebtInstruments_41C99C88C882DFB064F9747E4467E85A_label_en-US" xlink:label="lab_pkg_NewDebtInstruments_41C99C88C882DFB064F9747E4467E85A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Debt Instruments</link:label>
    <link:label id="lab_pkg_NewDebtInstruments_41C99C88C882DFB064F9747E4467E85A_documentation_en-US" xlink:label="lab_pkg_NewDebtInstruments_41C99C88C882DFB064F9747E4467E85A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">New borrowings and new credit facility both drawn and undrawn.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_NewDebtInstruments" xlink:label="loc_pkg_NewDebtInstruments_41C99C88C882DFB064F9747E4467E85A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongTermDebt_3F3B15B0BA7867667763747E44680715_label_en-US" xlink:label="lab_us-gaap_LongTermDebt_3F3B15B0BA7867667763747E44680715" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt</link:label>
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    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_D697A4CF9F1EBF12A4D7747E44680B92_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_D697A4CF9F1EBF12A4D7747E44680B92" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit facility borrowing capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_D697A4CF9F1EBF12A4D7747E44680B92_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_D697A4CF9F1EBF12A4D7747E44680B92" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_D697A4CF9F1EBF12A4D7747E44680B92" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_D697A4CF9F1EBF12A4D7747E44680B92" xlink:to="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_D697A4CF9F1EBF12A4D7747E44680B92" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeniorNotes_012D9D5F4DB84AFEB582747E44688159_verboseLabel_en-US" xlink:label="lab_us-gaap_SeniorNotes_012D9D5F4DB84AFEB582747E44688159" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Senior notes issued</link:label>
    <link:label id="lab_us-gaap_SeniorNotes_012D9D5F4DB84AFEB582747E44688159_label_en-US" xlink:label="lab_us-gaap_SeniorNotes_012D9D5F4DB84AFEB582747E44688159" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_F8631A691F4BC1B9A341747E44686E06_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_F8631A691F4BC1B9A341747E44686E06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stated interest rate</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_F8631A691F4BC1B9A341747E44686E06_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_F8631A691F4BC1B9A341747E44686E06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage</link:label>
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    <link:label id="lab_us-gaap_ExtinguishmentOfDebtAmount_59F2A5FDF714F90C8E26747E446829D9_terseLabel_en-US" xlink:label="lab_us-gaap_ExtinguishmentOfDebtAmount_59F2A5FDF714F90C8E26747E446829D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Repayment of debt</link:label>
    <link:label id="lab_us-gaap_ExtinguishmentOfDebtAmount_59F2A5FDF714F90C8E26747E446829D9_label_en-US" xlink:label="lab_us-gaap_ExtinguishmentOfDebtAmount_59F2A5FDF714F90C8E26747E446829D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Extinguishment of Debt, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ExtinguishmentOfDebtAmount" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_59F2A5FDF714F90C8E26747E446829D9" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityExpirationDate1_A7280C6D2099787AA497747E44688938_verboseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationDate1_A7280C6D2099787AA497747E44688938" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Credit facility, expiration date</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityExpirationDate1_A7280C6D2099787AA497747E44688938_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationDate1_A7280C6D2099787AA497747E44688938" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Expiration Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationDate1" xlink:label="loc_us-gaap_LineOfCreditFacilityExpirationDate1_A7280C6D2099787AA497747E44688938" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_67AEF3269490FF2F8DC8747E44681EB7_terseLabel_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_67AEF3269490FF2F8DC8747E44681EB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding letters of credit</link:label>
    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_67AEF3269490FF2F8DC8747E44681EB7_label_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_67AEF3269490FF2F8DC8747E44681EB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letters of Credit Outstanding, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_67AEF3269490FF2F8DC8747E44681EB7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LettersOfCreditOutstandingAmount_67AEF3269490FF2F8DC8747E44681EB7" xlink:to="lab_us-gaap_LettersOfCreditOutstandingAmount_67AEF3269490FF2F8DC8747E44681EB7" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_25D4ACF1DDB99BCC78DC747E4468360F_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_25D4ACF1DDB99BCC78DC747E4468360F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unused borrowing capacity</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_25D4ACF1DDB99BCC78DC747E4468360F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_25D4ACF1DDB99BCC78DC747E4468360F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:label="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_25D4ACF1DDB99BCC78DC747E4468360F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_25D4ACF1DDB99BCC78DC747E4468360F" xlink:to="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_25D4ACF1DDB99BCC78DC747E4468360F" xlink:type="arc" />
    <link:label id="lab_pkg_LongTermDebtApplicableMargin_47AE62BBFDED97EFEACB747E4468463A_terseLabel_en-US" xlink:label="lab_pkg_LongTermDebtApplicableMargin_47AE62BBFDED97EFEACB747E4468463A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Applicable margin</link:label>
    <link:label id="lab_pkg_LongTermDebtApplicableMargin_47AE62BBFDED97EFEACB747E4468463A_label_en-US" xlink:label="lab_pkg_LongTermDebtApplicableMargin_47AE62BBFDED97EFEACB747E4468463A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Debt Applicable Margin</link:label>
    <link:label id="lab_pkg_LongTermDebtApplicableMargin_47AE62BBFDED97EFEACB747E4468463A_documentation_en-US" xlink:label="lab_pkg_LongTermDebtApplicableMargin_47AE62BBFDED97EFEACB747E4468463A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the applicable margin for the debt instrument at the end of the period.</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LongTermDebtApplicableMargin_47AE62BBFDED97EFEACB747E4468463A" xlink:to="lab_pkg_LongTermDebtApplicableMargin_47AE62BBFDED97EFEACB747E4468463A" xlink:type="arc" />
    <link:label id="lab_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554_terseLabel_en-US" xlink:label="lab_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument maturity year</link:label>
    <link:label id="lab_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554_label_en-US" xlink:label="lab_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Maturity Year</link:label>
    <link:label id="lab_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554_documentation_en-US" xlink:label="lab_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt instrument maturity year</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_DebtInstrumentMaturityYear" xlink:label="loc_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554" xlink:to="lab_pkg_DebtInstrumentMaturityYear_ED3A69AFC0E2FE026727747E44689554" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentMaturityDate_58942971E2D93BB9FCEB747E44686D7F_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_58942971E2D93BB9FCEB747E44686D7F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Senior notes, due date</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentMaturityDate_58942971E2D93BB9FCEB747E44686D7F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_58942971E2D93BB9FCEB747E44686D7F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Maturity Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_58942971E2D93BB9FCEB747E44686D7F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentMaturityDate_58942971E2D93BB9FCEB747E44686D7F" xlink:to="lab_us-gaap_DebtInstrumentMaturityDate_58942971E2D93BB9FCEB747E44686D7F" xlink:type="arc" />
    <link:label id="lab_pkg_CostToRedeemDebt_C2C6EC7A908F32456940747E44680199_terseLabel_en-US" xlink:label="lab_pkg_CostToRedeemDebt_C2C6EC7A908F32456940747E44680199" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior notes, cost to redemption</link:label>
    <link:label id="lab_pkg_CostToRedeemDebt_C2C6EC7A908F32456940747E44680199_label_en-US" xlink:label="lab_pkg_CostToRedeemDebt_C2C6EC7A908F32456940747E44680199" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost To Redeem Debt</link:label>
    <link:label id="lab_pkg_CostToRedeemDebt_C2C6EC7A908F32456940747E44680199_documentation_en-US" xlink:label="lab_pkg_CostToRedeemDebt_C2C6EC7A908F32456940747E44680199" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents total cost to redeem debt, including debt principal, interest and redemption premium</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_CostToRedeemDebt" xlink:label="loc_pkg_CostToRedeemDebt_C2C6EC7A908F32456940747E44680199" xlink:type="locator" />
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    <link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_9A92FE86AC3B44F59A5D747E4468370E_terseLabel_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_9A92FE86AC3B44F59A5D747E4468370E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior notes, redemption premium</link:label>
    <link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_9A92FE86AC3B44F59A5D747E4468370E_label_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_9A92FE86AC3B44F59A5D747E4468370E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gains (Losses) on Extinguishment of Debt</link:label>
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    <link:label id="lab_us-gaap_InterestPayableCurrentAndNoncurrent_A1E4CBEEE40EAA50F4AD747E4468C1A8_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPayableCurrentAndNoncurrent_A1E4CBEEE40EAA50F4AD747E4468C1A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior notes, accrued and unpaid interest</link:label>
    <link:label id="lab_us-gaap_InterestPayableCurrentAndNoncurrent_A1E4CBEEE40EAA50F4AD747E4468C1A8_label_en-US" xlink:label="lab_us-gaap_InterestPayableCurrentAndNoncurrent_A1E4CBEEE40EAA50F4AD747E4468C1A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestPayableCurrentAndNoncurrent" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_A1E4CBEEE40EAA50F4AD747E4468C1A8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebtAbstract_D0187957DAD0C40DA1A4747E44686E1B_terseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebtAbstract_D0187957DAD0C40DA1A4747E44686E1B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Annual Principal Maturities for Debt [Abstract]</link:label>
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    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_A2A2F36D80C975695056747E4468F8BF_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_A2A2F36D80C975695056747E4468F8BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2014</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_A2A2F36D80C975695056747E4468F8BF_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_A2A2F36D80C975695056747E4468F8BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_A2A2F36D80C975695056747E4468F8BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_A2A2F36D80C975695056747E4468F8BF" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_A2A2F36D80C975695056747E4468F8BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_C6F2895A8AF90DAC5BE7747E44699C3E_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_C6F2895A8AF90DAC5BE7747E44699C3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2015</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_C6F2895A8AF90DAC5BE7747E44699C3E_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_C6F2895A8AF90DAC5BE7747E44699C3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_C6F2895A8AF90DAC5BE7747E44699C3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_C6F2895A8AF90DAC5BE7747E44699C3E" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_C6F2895A8AF90DAC5BE7747E44699C3E" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_475BC684523357844F45747E4469DB2C_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_475BC684523357844F45747E4469DB2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_475BC684523357844F45747E4469DB2C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_475BC684523357844F45747E4469DB2C" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_475BC684523357844F45747E4469DB2C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9756FAC065FD87C4719C747E4469F901_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9756FAC065FD87C4719C747E4469F901" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9756FAC065FD87C4719C747E4469F901_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9756FAC065FD87C4719C747E4469F901" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9756FAC065FD87C4719C747E4469F901" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9756FAC065FD87C4719C747E4469F901" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9756FAC065FD87C4719C747E4469F901" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ECFF0F06F654FB9C2EBC747E4469ACDB_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ECFF0F06F654FB9C2EBC747E4469ACDB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ECFF0F06F654FB9C2EBC747E4469ACDB_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ECFF0F06F654FB9C2EBC747E4469ACDB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ECFF0F06F654FB9C2EBC747E4469ACDB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ECFF0F06F654FB9C2EBC747E4469ACDB" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ECFF0F06F654FB9C2EBC747E4469ACDB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_E4BE8EB461743D0CBF54747E44699CE2_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_E4BE8EB461743D0CBF54747E44699CE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019 and thereafter</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_E4BE8EB461743D0CBF54747E44699CE2_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_E4BE8EB461743D0CBF54747E44699CE2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_E4BE8EB461743D0CBF54747E44699CE2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_E4BE8EB461743D0CBF54747E44699CE2" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_E4BE8EB461743D0CBF54747E44699CE2" xlink:type="arc" />
    <link:label id="lab_pkg_InterestPaymentsandRedemptionPremiumPayments_2CDE2438382A084C1BE8747E44690111_terseLabel_en-US" xlink:label="lab_pkg_InterestPaymentsandRedemptionPremiumPayments_2CDE2438382A084C1BE8747E44690111" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest payments and redemption premium payments paid for debt obligations</link:label>
    <link:label id="lab_pkg_InterestPaymentsandRedemptionPremiumPayments_2CDE2438382A084C1BE8747E44690111_label_en-US" xlink:label="lab_pkg_InterestPaymentsandRedemptionPremiumPayments_2CDE2438382A084C1BE8747E44690111" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Payments and Redemption Premium Payments</link:label>
    <link:label id="lab_pkg_InterestPaymentsandRedemptionPremiumPayments_2CDE2438382A084C1BE8747E44690111_documentation_en-US" xlink:label="lab_pkg_InterestPaymentsandRedemptionPremiumPayments_2CDE2438382A084C1BE8747E44690111" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of the required periodic payments applied to interest and redemption premium payments paid (as they occur).</link:label>
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    <link:label id="lab_pkg_RedemptionPremiumonLongTermDebt_F366E86427702E77180A747E446904C4_terseLabel_en-US" xlink:label="lab_pkg_RedemptionPremiumonLongTermDebt_F366E86427702E77180A747E446904C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemption premium paid on long-term debt</link:label>
    <link:label id="lab_pkg_RedemptionPremiumonLongTermDebt_F366E86427702E77180A747E446904C4_label_en-US" xlink:label="lab_pkg_RedemptionPremiumonLongTermDebt_F366E86427702E77180A747E446904C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemption Premium on Long-Term Debt</link:label>
    <link:label id="lab_pkg_RedemptionPremiumonLongTermDebt_F366E86427702E77180A747E446904C4_documentation_en-US" xlink:label="lab_pkg_RedemptionPremiumonLongTermDebt_F366E86427702E77180A747E446904C4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Premium paid to redeem long-term debt.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_RedemptionPremiumonLongTermDebt" xlink:label="loc_pkg_RedemptionPremiumonLongTermDebt_F366E86427702E77180A747E446904C4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DerivativeGainLossOnDerivativeNet_34850CDAB8D057C1B4B5747E4469D424_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeGainLossOnDerivativeNet_34850CDAB8D057C1B4B5747E4469D424" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of net (loss) gain on treasury lock</link:label>
    <link:label id="lab_us-gaap_DerivativeGainLossOnDerivativeNet_34850CDAB8D057C1B4B5747E4469D424_label_en-US" xlink:label="lab_us-gaap_DerivativeGainLossOnDerivativeNet_34850CDAB8D057C1B4B5747E4469D424" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Gain (Loss) on Derivative, Net</link:label>
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    <link:label id="lab_us-gaap_AmortizationOfFinancingCosts_560C6F2A5C43E21B2F38747E4469317A_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_560C6F2A5C43E21B2F38747E4469317A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of financing costs</link:label>
    <link:label id="lab_us-gaap_AmortizationOfFinancingCosts_560C6F2A5C43E21B2F38747E4469317A_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_560C6F2A5C43E21B2F38747E4469317A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Financing Costs</link:label>
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    <link:label id="lab_us-gaap_LongtermDebtPercentageBearingFixedInterestAmount_3705369BD43B9DF319BB747E4469815C_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtPercentageBearingFixedInterestAmount_3705369BD43B9DF319BB747E4469815C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Book value of fixed rate debt</link:label>
    <link:label id="lab_us-gaap_LongtermDebtPercentageBearingFixedInterestAmount_3705369BD43B9DF319BB747E4469815C_label_en-US" xlink:label="lab_us-gaap_LongtermDebtPercentageBearingFixedInterestAmount_3705369BD43B9DF319BB747E4469815C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Percentage Bearing Fixed Interest, Amount</link:label>
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    <link:label id="lab_us-gaap_LongTermDebtFairValue_B5598429D4E1D043AAC4747E4469D81D_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_B5598429D4E1D043AAC4747E4469D81D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, fair value</link:label>
    <link:label id="lab_us-gaap_LongTermDebtFairValue_B5598429D4E1D043AAC4747E4469D81D_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_B5598429D4E1D043AAC4747E4469D81D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Fair Value</link:label>
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    <link:label id="lab_us-gaap_RelatedPartyDomain_BD3BFF8E77D38C159B2B6BEB0EEC8D87_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_BD3BFF8E77D38C159B2B6BEB0EEC8D87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party [Domain]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyDomain_BD3BFF8E77D38C159B2B6BEB0EEC8D87_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_BD3BFF8E77D38C159B2B6BEB0EEC8D87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party [Domain]</link:label>
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    <link:label id="lab_us-gaap_CoVenturerMember_48E8B2A2FE5E68ABDE8E6BEB0EEC2FDB_terseLabel_en-US" xlink:label="lab_us-gaap_CoVenturerMember_48E8B2A2FE5E68ABDE8E6BEB0EEC2FDB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Boise Cascade Co-Owner of LTP</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_OperatingLeasesMember_15A1BF6D46213AC265506C1CE4FF02E9" xlink:to="lab_pkg_OperatingLeasesMember_15A1BF6D46213AC265506C1CE4FF02E9" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeaseObligationsMember_C8080E6B01C5E8EE81756C1CE4FF4DE5_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_C8080E6B01C5E8EE81756C1CE4FF4DE5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital Lease Obligations</link:label>
    <link:label id="lab_us-gaap_CapitalLeaseObligationsMember_C8080E6B01C5E8EE81756C1CE4FF4DE5_label_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_C8080E6B01C5E8EE81756C1CE4FF4DE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Lease Obligations [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeaseObligationsMember" xlink:label="loc_us-gaap_CapitalLeaseObligationsMember_C8080E6B01C5E8EE81756C1CE4FF4DE5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeaseObligationsMember_C8080E6B01C5E8EE81756C1CE4FF4DE5" xlink:to="lab_us-gaap_CapitalLeaseObligationsMember_C8080E6B01C5E8EE81756C1CE4FF4DE5" xlink:type="arc" />
    <link:label id="lab_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2_terseLabel_en-US" xlink:label="lab_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule Of Commitments And Contingencies [Line Items]</link:label>
    <link:label id="lab_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2_label_en-US" xlink:label="lab_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Commitments And Contingencies [Line Items]</link:label>
    <link:label id="lab_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2_documentation_en-US" xlink:label="lab_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule Of Commitments And Contingencies [Line Items]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_ScheduleOfCommitmentsAndContingenciesLineItems" xlink:label="loc_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2" xlink:to="lab_pkg_ScheduleOfCommitmentsAndContingenciesLineItems_B4D2317E27043DF8932A6C1CE4FFB7E2" xlink:type="arc" />
    <link:label id="lab_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652_terseLabel_en-US" xlink:label="lab_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital commitments</link:label>
    <link:label id="lab_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652_label_en-US" xlink:label="lab_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Commitments</link:label>
    <link:label id="lab_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652_documentation_en-US" xlink:label="lab_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of capital committed for the expansion and replacement of existing facilities and equipment.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_CapitalCommitments" xlink:label="loc_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652" xlink:to="lab_pkg_CapitalCommitments_2F4E6A715022FFD7CDFD6C1CE4FF1652" xlink:type="arc" />
    <link:label id="lab_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C_terseLabel_en-US" xlink:label="lab_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Area leased under timberland cutting rights (acres)</link:label>
    <link:label id="lab_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C_label_en-US" xlink:label="lab_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Area Leased Under Timberland Cutting Rights</link:label>
    <link:label id="lab_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C_documentation_en-US" xlink:label="lab_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents number of acres of timberland under cutting right leases.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_AreaLeasedUnderTimberlandCuttingRights" xlink:label="loc_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C" xlink:to="lab_pkg_AreaLeasedUnderTimberlandCuttingRights_B213FD2A044FFC66CB826C1CE4FF316C" xlink:type="arc" />
    <link:label id="lab_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391_terseLabel_en-US" xlink:label="lab_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease term, years</link:label>
    <link:label id="lab_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391_label_en-US" xlink:label="lab_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Term Period</link:label>
    <link:label id="lab_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391_documentation_en-US" xlink:label="lab_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease term period.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LeaseTermPeriod" xlink:label="loc_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391" xlink:to="lab_pkg_LeaseTermPeriod_F85AF7CC93B9AA4F69B96C1CE4FF3391" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseAndRentalExpense_4662E7A13672032AFE456C1CE4FF83CB_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_4662E7A13672032AFE456C1CE4FF83CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total lease expense</link:label>
    <link:label id="lab_us-gaap_LeaseAndRentalExpense_4662E7A13672032AFE456C1CE4FF83CB_label_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_4662E7A13672032AFE456C1CE4FF83CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Rent Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="loc_us-gaap_LeaseAndRentalExpense_4662E7A13672032AFE456C1CE4FF83CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseAndRentalExpense_4662E7A13672032AFE456C1CE4FF83CB" xlink:to="lab_us-gaap_LeaseAndRentalExpense_4662E7A13672032AFE456C1CE4FF83CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeaseObligations_116CAAD8C1F37E769FC86C1CE4FF8A3D_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligations_116CAAD8C1F37E769FC86C1CE4FF8A3D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital lease obligations</link:label>
    <link:label id="lab_us-gaap_CapitalLeaseObligations_116CAAD8C1F37E769FC86C1CE4FF8A3D_label_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligations_116CAAD8C1F37E769FC86C1CE4FF8A3D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Lease Obligations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeaseObligations" xlink:label="loc_us-gaap_CapitalLeaseObligations_116CAAD8C1F37E769FC86C1CE4FF8A3D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeaseObligations_116CAAD8C1F37E769FC86C1CE4FF8A3D" xlink:to="lab_us-gaap_CapitalLeaseObligations_116CAAD8C1F37E769FC86C1CE4FF8A3D" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_20FC323C0FAEF22676186C1CE4FFD2BB_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_20FC323C0FAEF22676186C1CE4FFD2BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest paid, capital lease obligations</link:label>
    <link:label id="lab_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_20FC323C0FAEF22676186C1CE4FFD2BB_label_en-US" xlink:label="lab_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_20FC323C0FAEF22676186C1CE4FFD2BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Expense, Lessee, Assets under Capital Lease</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease" xlink:label="loc_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_20FC323C0FAEF22676186C1CE4FFD2BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_20FC323C0FAEF22676186C1CE4FFD2BB" xlink:to="lab_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_20FC323C0FAEF22676186C1CE4FFD2BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentTimePeriod_A16E417E096D49830FA56C1CE4FFE209_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentTimePeriod_A16E417E096D49830FA56C1CE4FFE209" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase commitments term, years</link:label>
    <link:label id="lab_us-gaap_LongTermPurchaseCommitmentTimePeriod_A16E417E096D49830FA56C1CE4FFE209_label_en-US" xlink:label="lab_us-gaap_LongTermPurchaseCommitmentTimePeriod_A16E417E096D49830FA56C1CE4FFE209" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Purchase Commitment, Time Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermPurchaseCommitmentTimePeriod" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentTimePeriod_A16E417E096D49830FA56C1CE4FFE209" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTimePeriod_A16E417E096D49830FA56C1CE4FFE209" xlink:to="lab_us-gaap_LongTermPurchaseCommitmentTimePeriod_A16E417E096D49830FA56C1CE4FFE209" xlink:type="arc" />
    <link:label id="lab_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310_terseLabel_en-US" xlink:label="lab_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchases during period under purchase agreements</link:label>
    <link:label id="lab_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310_label_en-US" xlink:label="lab_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Period Purchases Under Long Term Purchase Agreements</link:label>
    <link:label id="lab_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310_documentation_en-US" xlink:label="lab_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents amounts paid in current period under long-term purchase agreements.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements" xlink:label="loc_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310" xlink:to="lab_pkg_CurrentPeriodPurchasesUnderLongTermPurchaseAgreements_C2F504679E7A9ACA17246C1CE4FFB310" xlink:type="arc" />
    <link:label id="lab_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF_terseLabel_en-US" xlink:label="lab_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Environmental remediation expense to date</link:label>
    <link:label id="lab_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF_label_en-US" xlink:label="lab_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Environmental Remediation Expense To Date</link:label>
    <link:label id="lab_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF_documentation_en-US" xlink:label="lab_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total costs incurred arising from requirements to perform environmental remediation activities.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_EnvironmentalRemediationExpenseToDate" xlink:label="loc_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF" xlink:to="lab_pkg_EnvironmentalRemediationExpenseToDate_B8497EEC753BE28873436C1CF4C5DAEF" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingencies_F075F0B06B21F119F2A16C1CE4FF6B02_terseLabel_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingencies_F075F0B06B21F119F2A16C1CE4FF6B02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Environmental reserve</link:label>
    <link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingencies_F075F0B06B21F119F2A16C1CE4FF6B02_label_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingencies_F075F0B06B21F119F2A16C1CE4FF6B02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrual for Environmental Loss Contingencies</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_F075F0B06B21F119F2A16C1CE4FF6B02" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccrualForEnvironmentalLossContingencies_F075F0B06B21F119F2A16C1CE4FF6B02" xlink:to="lab_us-gaap_AccrualForEnvironmentalLossContingencies_F075F0B06B21F119F2A16C1CE4FF6B02" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingencyPartiesJointlyAndSeverallyLiableInLitigation_B52CED1607CC7FDF45C76C1CE4FF1154_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyPartiesJointlyAndSeverallyLiableInLitigation_B52CED1607CC7FDF45C76C1CE4FF1154" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of other U.S. and Canadian containerboard producers</link:label>
    <link:label id="lab_us-gaap_LossContingencyPartiesJointlyAndSeverallyLiableInLitigation_B52CED1607CC7FDF45C76C1CE4FF1154_label_en-US" xlink:label="lab_us-gaap_LossContingencyPartiesJointlyAndSeverallyLiableInLitigation_B52CED1607CC7FDF45C76C1CE4FF1154" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency, Parties Jointly and Severally Liable in Litigation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LossContingencyPartiesJointlyAndSeverallyLiableInLitigation" xlink:label="loc_us-gaap_LossContingencyPartiesJointlyAndSeverallyLiableInLitigation_B52CED1607CC7FDF45C76C1CE4FF1154" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_A0A84F17A05CC5C86E18562EFBA78AA6" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PensionAndOtherPostretirementPlansPolicy_5C4C55F78C4B6C4A08BD562EFBA70CAE_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementPlansPolicy_5C4C55F78C4B6C4A08BD562EFBA70CAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pension and Postretirement Benefits</link:label>
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    <link:label id="lab_us-gaap_EnvironmentalCostsCapitalizationPolicy_9442D983E7907A13C523562EFBA79DB8_terseLabel_en-US" xlink:label="lab_us-gaap_EnvironmentalCostsCapitalizationPolicy_9442D983E7907A13C523562EFBA79DB8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Environmental Matters</link:label>
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    <link:label id="lab_pkg_TaxRelatedtoCellulosicBiofuelTaxCreditsMember_85591C593B52CA86EF886FC1E5827537_documentation_en-US" xlink:label="lab_pkg_TaxRelatedtoCellulosicBiofuelTaxCreditsMember_85591C593B52CA86EF886FC1E5827537" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax Related to Cellulosic Biofuel Tax Credits[Member]</link:label>
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    <link:label id="lab_pkg_IncomeTaxCreditsAndAdjustmentsAxis_A5CA86953C5AB6C386956FC1E582F4C5_label_en-US" xlink:label="lab_pkg_IncomeTaxCreditsAndAdjustmentsAxis_A5CA86953C5AB6C386956FC1E582F4C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Credits And Adjustments [Axis]</link:label>
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    <link:label id="lab_pkg_IncomeTaxCreditsAndAdjustmentsDomain_A2C90A0B96DA3B1CE16F6FC1E5821652_label_en-US" xlink:label="lab_pkg_IncomeTaxCreditsAndAdjustmentsDomain_A2C90A0B96DA3B1CE16F6FC1E5821652" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Credits And Adjustments [Domain]</link:label>
    <link:label id="lab_pkg_IncomeTaxCreditsAndAdjustmentsDomain_A2C90A0B96DA3B1CE16F6FC1E5821652_documentation_en-US" xlink:label="lab_pkg_IncomeTaxCreditsAndAdjustmentsDomain_A2C90A0B96DA3B1CE16F6FC1E5821652" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income Tax Credits And Adjustments [Domain]</link:label>
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    <link:label id="lab_pkg_AdditionalMember_671AABEC9B6D8965727E6FC1E5821083_label_en-US" xlink:label="lab_pkg_AdditionalMember_671AABEC9B6D8965727E6FC1E5821083" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional [Member]</link:label>
    <link:label id="lab_pkg_AdditionalMember_671AABEC9B6D8965727E6FC1E5821083_documentation_en-US" xlink:label="lab_pkg_AdditionalMember_671AABEC9B6D8965727E6FC1E5821083" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additional [Member]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_AdditionalMember" xlink:label="loc_pkg_AdditionalMember_671AABEC9B6D8965727E6FC1E5821083" xlink:type="locator" />
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    <link:label id="lab_pkg_AlternativeEnergyTaxCreditsLineItems_7FD15C65EDAF56C6E1D36FC1E58299F9_terseLabel_en-US" xlink:label="lab_pkg_AlternativeEnergyTaxCreditsLineItems_7FD15C65EDAF56C6E1D36FC1E58299F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Alternative Energy Tax Credits [Line Items]</link:label>
    <link:label id="lab_pkg_AlternativeEnergyTaxCreditsLineItems_7FD15C65EDAF56C6E1D36FC1E58299F9_label_en-US" xlink:label="lab_pkg_AlternativeEnergyTaxCreditsLineItems_7FD15C65EDAF56C6E1D36FC1E58299F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Alternative Energy Tax Credits [Line Items]</link:label>
    <link:label id="lab_pkg_AlternativeEnergyTaxCreditsLineItems_7FD15C65EDAF56C6E1D36FC1E58299F9_documentation_en-US" xlink:label="lab_pkg_AlternativeEnergyTaxCreditsLineItems_7FD15C65EDAF56C6E1D36FC1E58299F9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Alternative Energy Tax Credits [Line Items]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_AlternativeEnergyTaxCreditsLineItems" xlink:label="loc_pkg_AlternativeEnergyTaxCreditsLineItems_7FD15C65EDAF56C6E1D36FC1E58299F9" xlink:type="locator" />
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    <link:label id="lab_pkg_TaxCreditPerGallon_CBCE74C649BB16FFE8FA6FC1E5820CD1_terseLabel_en-US" xlink:label="lab_pkg_TaxCreditPerGallon_CBCE74C649BB16FFE8FA6FC1E5820CD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Refundable tax credit per gallon</link:label>
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    <link:label id="lab_pkg_TaxCreditPerGallon_CBCE74C649BB16FFE8FA6FC1E5820CD1_documentation_en-US" xlink:label="lab_pkg_TaxCreditPerGallon_CBCE74C649BB16FFE8FA6FC1E5820CD1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents tax credit per gallon of alternative fuel produced.</link:label>
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    <link:label id="lab_pkg_ExpensesRelatedToAlternativeEnergyTaxCredits_069BC2A2B6FC8A657C916FC1E582C193_documentation_en-US" xlink:label="lab_pkg_ExpensesRelatedToAlternativeEnergyTaxCredits_069BC2A2B6FC8A657C916FC1E582C193" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents expenses incurred related to the alternative energy tax credits.</link:label>
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    <link:label id="lab_pkg_EmployeeStockOwnershipPlanMember_6EAB8A31D6973FA6C01D6BCA0D0D0588_terseLabel_en-US" xlink:label="lab_pkg_EmployeeStockOwnershipPlanMember_6EAB8A31D6973FA6C01D6BCA0D0D0588" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee Stock Ownership Plan</link:label>
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    <link:label id="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_ED94ABAF5567852422166BCA0D0D8903_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_ED94ABAF5567852422166BCA0D0D8903" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net underfunded status of acquired benefit plans</link:label>
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    <link:label id="lab_pkg_MinimumRetirementAgeForRetireeMedicalBenefitPlanCoverage_7B3D01D28283CB38B7E36BCA0D12A1FA_terseLabel_en-US" xlink:label="lab_pkg_MinimumRetirementAgeForRetireeMedicalBenefitPlanCoverage_7B3D01D28283CB38B7E36BCA0D12A1FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum retirement age for medical benefit plan coverage, years</link:label>
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    <link:label id="lab_us-gaap_DefinedContributionPlanCostRecognized_67536078610D9AA4E8BF6BCA0D13BAA7_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedContributionPlanCostRecognized_67536078610D9AA4E8BF6BCA0D13BAA7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Company's contribution to defined contribution plans</link:label>
    <link:label id="lab_us-gaap_DefinedContributionPlanCostRecognized_67536078610D9AA4E8BF6BCA0D13BAA7_label_en-US" xlink:label="lab_us-gaap_DefinedContributionPlanCostRecognized_67536078610D9AA4E8BF6BCA0D13BAA7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Contribution Plan, Cost Recognized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DefinedContributionPlanCostRecognized" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized_67536078610D9AA4E8BF6BCA0D13BAA7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedContributionPlanCostRecognized_67536078610D9AA4E8BF6BCA0D13BAA7" xlink:to="lab_us-gaap_DefinedContributionPlanCostRecognized_67536078610D9AA4E8BF6BCA0D13BAA7" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP_4F9F14989C2591BFE18E6BCA0D13C04A_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP_4F9F14989C2591BFE18E6BCA0D13C04A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Company's common stock</link:label>
    <link:label id="lab_us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP_4F9F14989C2591BFE18E6BCA0D13C04A_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP_4F9F14989C2591BFE18E6BCA0D13C04A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Stock Ownership Plan (ESOP), Shares in ESOP</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP" xlink:label="loc_us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP_4F9F14989C2591BFE18E6BCA0D13C04A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP_4F9F14989C2591BFE18E6BCA0D13C04A" xlink:to="lab_us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOP_4F9F14989C2591BFE18E6BCA0D13C04A" xlink:type="arc" />
    <link:label id="lab_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7_terseLabel_en-US" xlink:label="lab_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Company's contribution to pension plan, percentage</link:label>
    <link:label id="lab_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7_label_en-US" xlink:label="lab_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Company Retirement Contribution Percentage</link:label>
    <link:label id="lab_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7_documentation_en-US" xlink:label="lab_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the percentage of base pay for service-related Company retirement contributions to a defined contribution plan.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_CompanyRetirementContributionPercentage" xlink:label="loc_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7" xlink:to="lab_pkg_CompanyRetirementContributionPercentage_C816B035B84DE65D83086BCA0D1359C7" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability_3DDD4D97709ACAFDD2326BCA0D1340B0_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability_3DDD4D97709ACAFDD2326BCA0D1340B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred compensation liability</link:label>
    <link:label id="lab_us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability_3DDD4D97709ACAFDD2326BCA0D1340B0_label_en-US" xlink:label="lab_us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability_3DDD4D97709ACAFDD2326BCA0D1340B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Compensation Arrangement with Individual, Recorded Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability_3DDD4D97709ACAFDD2326BCA0D1340B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability_3DDD4D97709ACAFDD2326BCA0D1340B0" xlink:to="lab_us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability_3DDD4D97709ACAFDD2326BCA0D1340B0" xlink:type="arc" />
    <link:label id="lab_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573_terseLabel_en-US" xlink:label="lab_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in other long-term liabilities</link:label>
    <link:label id="lab_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573_label_en-US" xlink:label="lab_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Compensation Arrangement with Individual, Change in Recorded Liability</link:label>
    <link:label id="lab_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573_documentation_en-US" xlink:label="lab_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The change in carrying amount of the liability during the period to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability" xlink:label="loc_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573" xlink:to="lab_pkg_DeferredCompensationArrangementwithIndividualChangeinRecordedLiability_07BC25E3C2D2ED6446AB6BCA0D130573" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationsAbstract_9E31F80B2DFB2D6BD56D6BABF720EAEE_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsAbstract_9E31F80B2DFB2D6BD56D6BABF720EAEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combinations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_9E31F80B2DFB2D6BD56D6BABF720EAEE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_9E31F80B2DFB2D6BD56D6BABF720EAEE" xlink:to="lab_us-gaap_BusinessCombinationsAbstract_9E31F80B2DFB2D6BD56D6BABF720EAEE" xlink:type="arc" />
    <link:label id="lab_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A_terseLabel_en-US" xlink:label="lab_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Packaging Specialists</link:label>
    <link:label id="lab_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A_label_en-US" xlink:label="lab_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Packaging Specialists [Member]</link:label>
    <link:label id="lab_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A_documentation_en-US" xlink:label="lab_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Packaging Specialists</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_PackagingSpecialistsMember" xlink:label="loc_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A" xlink:to="lab_pkg_PackagingSpecialistsMember_67F90AA31A1969A969B96BABF7254F7A" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_1225A38ACCDAFABCD9076BABF726DFD5_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_1225A38ACCDAFABCD9076BABF726DFD5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding stock and voting equity interests acquired</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_1225A38ACCDAFABCD9076BABF726DFD5_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_1225A38ACCDAFABCD9076BABF726DFD5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Percentage of Voting Interests Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_1225A38ACCDAFABCD9076BABF726DFD5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_1225A38ACCDAFABCD9076BABF726DFD5" xlink:to="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_1225A38ACCDAFABCD9076BABF726DFD5" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionSharePrice_BD391A21980A92C65C7D6BABF726C976_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionSharePrice_BD391A21980A92C65C7D6BABF726C976" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding common stock acquired, price per share</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionSharePrice_BD391A21980A92C65C7D6BABF726C976_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionSharePrice_BD391A21980A92C65C7D6BABF726C976" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Share Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionSharePrice" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_BD391A21980A92C65C7D6BABF726C976" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionSharePrice_BD391A21980A92C65C7D6BABF726C976" xlink:to="lab_us-gaap_BusinessAcquisitionSharePrice_BD391A21980A92C65C7D6BABF726C976" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_303C0C1C5D82E4CB3F686BABF7269136_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_303C0C1C5D82E4CB3F686BABF7269136" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business acquisition, cost of acquired entity, cash paid</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_303C0C1C5D82E4CB3F686BABF7269136_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_303C0C1C5D82E4CB3F686BABF7269136" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_303C0C1C5D82E4CB3F686BABF7269136" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesGross_303C0C1C5D82E4CB3F686BABF7269136" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesGross_303C0C1C5D82E4CB3F686BABF7269136" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAcquiredFromAcquisition_E1EBE9F6E1C9B7D5DB6B6BABF7265692_terseLabel_en-US" xlink:label="lab_us-gaap_CashAcquiredFromAcquisition_E1EBE9F6E1C9B7D5DB6B6BABF7265692" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash acquired from acquisition</link:label>
    <link:label id="lab_us-gaap_CashAcquiredFromAcquisition_E1EBE9F6E1C9B7D5DB6B6BABF7265692_label_en-US" xlink:label="lab_us-gaap_CashAcquiredFromAcquisition_E1EBE9F6E1C9B7D5DB6B6BABF7265692" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Acquired from Acquisition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAcquiredFromAcquisition" xlink:label="loc_us-gaap_CashAcquiredFromAcquisition_E1EBE9F6E1C9B7D5DB6B6BABF7265692" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAcquiredFromAcquisition_E1EBE9F6E1C9B7D5DB6B6BABF7265692" xlink:to="lab_us-gaap_CashAcquiredFromAcquisition_E1EBE9F6E1C9B7D5DB6B6BABF7265692" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_EEFAF054055A57CDFDFE6BABF726F6E2_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_EEFAF054055A57CDFDFE6BABF726F6E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business acquisition, debt assumed</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_EEFAF054055A57CDFDFE6BABF726F6E2_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_EEFAF054055A57CDFDFE6BABF726F6E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Consideration Transferred, Liabilities Incurred</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_EEFAF054055A57CDFDFE6BABF726F6E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_EEFAF054055A57CDFDFE6BABF726F6E2" xlink:to="lab_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_EEFAF054055A57CDFDFE6BABF726F6E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_05C8880A36397DC0F8EE6BABF726FB72_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_05C8880A36397DC0F8EE6BABF726FB72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Boise net sales revenue since acquisition date</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_05C8880A36397DC0F8EE6BABF726FB72_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_05C8880A36397DC0F8EE6BABF726FB72" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_05C8880A36397DC0F8EE6BABF726FB72" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_05C8880A36397DC0F8EE6BABF726FB72" xlink:to="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_05C8880A36397DC0F8EE6BABF726FB72" xlink:type="arc" />
    <link:label id="lab_pkg_BusinessCombinationProFormaInformationIncomefromOperationsOfAcquireeSinceAcquisitionDateActual_9875553A132F65492EC86BABF72632B9_terseLabel_en-US" xlink:label="lab_pkg_BusinessCombinationProFormaInformationIncomefromOperationsOfAcquireeSinceAcquisitionDateActual_9875553A132F65492EC86BABF72632B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Boise income from operations since acquisition</link:label>
    <link:label id="lab_pkg_BusinessCombinationProFormaInformationIncomefromOperationsOfAcquireeSinceAcquisitionDateActual_9875553A132F65492EC86BABF72632B9_label_en-US" xlink:label="lab_pkg_BusinessCombinationProFormaInformationIncomefromOperationsOfAcquireeSinceAcquisitionDateActual_9875553A132F65492EC86BABF72632B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination Pro Forma Information Income from Operations Of Acquiree Since Acquisition Date Actual</link:label>
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    <link:label id="lab_pkg_SignificantAccountingPoliciesTable_EED1C1FE3E841594041C6BA09061DD3B_label_en-US" xlink:label="lab_pkg_SignificantAccountingPoliciesTable_EED1C1FE3E841594041C6BA09061DD3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies [Table]</link:label>
    <link:label id="lab_pkg_SignificantAccountingPoliciesTable_EED1C1FE3E841594041C6BA09061DD3B_documentation_en-US" xlink:label="lab_pkg_SignificantAccountingPoliciesTable_EED1C1FE3E841594041C6BA09061DD3B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies [Table]</link:label>
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    <link:label id="lab_pkg_FiberSupplyAxis_796AA8B5E4A9CA3231466BA09062628B_label_en-US" xlink:label="lab_pkg_FiberSupplyAxis_796AA8B5E4A9CA3231466BA09062628B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fiber Supply [Axis]</link:label>
    <link:label id="lab_pkg_FiberSupplyAxis_796AA8B5E4A9CA3231466BA09062628B_documentation_en-US" xlink:label="lab_pkg_FiberSupplyAxis_796AA8B5E4A9CA3231466BA09062628B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fiber Supply [Axis]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_FiberSupplyAxis" xlink:label="loc_pkg_FiberSupplyAxis_796AA8B5E4A9CA3231466BA09062628B" xlink:type="locator" />
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    <link:label id="lab_pkg_FiberSupplyDomain_8D7EB9B83B48A7DAB49F6BA0906294E6_terseLabel_en-US" xlink:label="lab_pkg_FiberSupplyDomain_8D7EB9B83B48A7DAB49F6BA0906294E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fiber Supply [Domain]</link:label>
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    <link:loc xlink:href="pkg-20131231.xsd#pkg_FiberSupplyDomain" xlink:label="loc_pkg_FiberSupplyDomain_8D7EB9B83B48A7DAB49F6BA0906294E6" xlink:type="locator" />
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    <link:label id="lab_pkg_CuttingRightsandFiberFarmsMember_EB4026B0A9E3AD2845846BA090626AB0_terseLabel_en-US" xlink:label="lab_pkg_CuttingRightsandFiberFarmsMember_EB4026B0A9E3AD2845846BA090626AB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cutting Rights and Fiber Farms</link:label>
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    <link:loc xlink:href="pkg-20131231.xsd#pkg_CuttingRightsandFiberFarmsMember" xlink:label="loc_pkg_CuttingRightsandFiberFarmsMember_EB4026B0A9E3AD2845846BA090626AB0" xlink:type="locator" />
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    <link:label id="lab_pkg_SignificantAccountingPoliciesLineItems_DE5DD9B2EDB3933F16326BA090630FC8_terseLabel_en-US" xlink:label="lab_pkg_SignificantAccountingPoliciesLineItems_DE5DD9B2EDB3933F16326BA090630FC8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies [Line Items]</link:label>
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    <link:label id="lab_pkg_SignificantAccountingPoliciesLineItems_DE5DD9B2EDB3933F16326BA090630FC8_documentation_en-US" xlink:label="lab_pkg_SignificantAccountingPoliciesLineItems_DE5DD9B2EDB3933F16326BA090630FC8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies [Line Items]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_SignificantAccountingPoliciesLineItems" xlink:label="loc_pkg_SignificantAccountingPoliciesLineItems_DE5DD9B2EDB3933F16326BA090630FC8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_32DA7ED737101373757F6BA09063E17D_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_32DA7ED737101373757F6BA09063E17D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
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    <link:label id="lab_pkg_PercentageOfCustomerReturnsAllowancesAndEarnedDiscountsToGrossSellingPrice_F95E95591529B0F2BF2A6BA09063543B_terseLabel_en-US" xlink:label="lab_pkg_PercentageOfCustomerReturnsAllowancesAndEarnedDiscountsToGrossSellingPrice_F95E95591529B0F2BF2A6BA09063543B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer returns, allowances and earned discounts as a percentage of gross selling price</link:label>
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    <link:label id="lab_pkg_ReservePercentageForCustomerDeductions_B1C2414A942A2BDFB1466BA090634955_terseLabel_en-US" xlink:label="lab_pkg_ReservePercentageForCustomerDeductions_B1C2414A942A2BDFB1466BA090634955" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reserve for customer accounts receivable, percentage</link:label>
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    <link:label id="lab_pkg_ReservePercentageForCustomerDeductions_B1C2414A942A2BDFB1466BA090634955_documentation_en-US" xlink:label="lab_pkg_ReservePercentageForCustomerDeductions_B1C2414A942A2BDFB1466BA090634955" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the percentage of accounts receivable reserved for customer returns, allowances and earned discounts.</link:label>
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    <link:label id="lab_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D_terseLabel_en-US" xlink:label="lab_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reserve for customer deductions</link:label>
    <link:label id="lab_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D_label_en-US" xlink:label="lab_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserve For Customer Deductions</link:label>
    <link:label id="lab_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D_documentation_en-US" xlink:label="lab_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents a reserve for customer returns, allowances and earned discounts.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_ReserveForCustomerDeductions" xlink:label="loc_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D" xlink:to="lab_pkg_ReserveForCustomerDeductions_B6B0AB9D779FD9C751546BA09063050D" xlink:type="arc" />
    <link:label id="lab_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C_terseLabel_en-US" xlink:label="lab_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories valued using the LIFO method, amount</link:label>
    <link:label id="lab_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C_label_en-US" xlink:label="lab_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory Amount Valued At L I F O</link:label>
    <link:label id="lab_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C_documentation_en-US" xlink:label="lab_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of inventory valued using the LIFO method.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_InventoryAmountValuedAtLIFO" xlink:label="loc_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C" xlink:to="lab_pkg_InventoryAmountValuedAtLIFO_C600D2B804CB67C133F16BA09063C70C" xlink:type="arc" />
    <link:label id="lab_us-gaap_FIFOInventoryAmount_2FEA23CF7BB8F63BE02D6BA090639CA6_terseLabel_en-US" xlink:label="lab_us-gaap_FIFOInventoryAmount_2FEA23CF7BB8F63BE02D6BA090639CA6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventory values before LIFO inventory reserve</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FIFOInventoryAmount" xlink:label="loc_us-gaap_FIFOInventoryAmount_2FEA23CF7BB8F63BE02D6BA090639CA6" xlink:type="locator" />
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    <link:label id="lab_us-gaap_InterestCostsCapitalized_05466A15ADB6E0BE0C506BA09063A017_terseLabel_en-US" xlink:label="lab_us-gaap_InterestCostsCapitalized_05466A15ADB6E0BE0C506BA09063A017" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest capitalization, construction in progress</link:label>
    <link:label id="lab_us-gaap_InterestCostsCapitalized_05466A15ADB6E0BE0C506BA09063A017_label_en-US" xlink:label="lab_us-gaap_InterestCostsCapitalized_05466A15ADB6E0BE0C506BA09063A017" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Costs Capitalized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestCostsCapitalized" xlink:label="loc_us-gaap_InterestCostsCapitalized_05466A15ADB6E0BE0C506BA09063A017" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestCostsCapitalized_05466A15ADB6E0BE0C506BA09063A017" xlink:to="lab_us-gaap_InterestCostsCapitalized_05466A15ADB6E0BE0C506BA09063A017" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_34017BE7B2B7147609436BA09063C55E_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_34017BE7B2B7147609436BA09063C55E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Intangible asset, useful life, in years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_34017BE7B2B7147609436BA09063C55E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_34017BE7B2B7147609436BA09063C55E" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_34017BE7B2B7147609436BA09063C55E" xlink:type="arc" />
    <link:label id="lab_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69_terseLabel_en-US" xlink:label="lab_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term of senior credit facilities and notes, in years</link:label>
    <link:label id="lab_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69_label_en-US" xlink:label="lab_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Term Of Senior Credit Facilities And Notes</link:label>
    <link:label id="lab_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69_documentation_en-US" xlink:label="lab_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents term of senior credit facilities and notes.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_TermOfSeniorCreditFacilitiesAndNotes" xlink:label="loc_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69" xlink:to="lab_pkg_TermOfSeniorCreditFacilitiesAndNotes_7D239A59BFB8238882E66BA090630E69" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredFinanceCostsNet_2AD1B9E88A84804C33866BA09063AEA3_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNet_2AD1B9E88A84804C33866BA09063AEA3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unamortized deferred financing costs</link:label>
    <link:label id="lab_us-gaap_DeferredFinanceCostsNet_2AD1B9E88A84804C33866BA09063AEA3_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNet_2AD1B9E88A84804C33866BA09063AEA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Finance Costs, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_2AD1B9E88A84804C33866BA09063AEA3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_2AD1B9E88A84804C33866BA09063AEA3" xlink:to="lab_us-gaap_DeferredFinanceCostsNet_2AD1B9E88A84804C33866BA09063AEA3" xlink:type="arc" />
    <link:label id="lab_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE_terseLabel_en-US" xlink:label="lab_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Area leased where fiber farms are operated (acres)</link:label>
    <link:label id="lab_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE_label_en-US" xlink:label="lab_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Area Leased Where Fiber Farms Are Operated</link:label>
    <link:label id="lab_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE_documentation_en-US" xlink:label="lab_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Area leased where fiber farms are operated</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_AreaLeasedWhereFiberFarmsAreOperated" xlink:label="loc_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE" xlink:to="lab_pkg_AreaLeasedWhereFiberFarmsAreOperated_13336B8DB6F037FB1BA16BA090632DFE" xlink:type="arc" />
    <link:label id="lab_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC_terseLabel_en-US" xlink:label="lab_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term lease costs capitalization (Cutting rights)</link:label>
    <link:label id="lab_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC_label_en-US" xlink:label="lab_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capitalized Payments Under Timber Cutting Rights Leases</link:label>
    <link:label id="lab_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC_documentation_en-US" xlink:label="lab_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents amount of lease payments under long-term timberland cutting rights leases that are capitalized.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases" xlink:label="loc_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC" xlink:to="lab_pkg_CapitalizedPaymentsUnderTimberCuttingRightsLeases_3B979E823E8AF5F351596BA090631ACC" xlink:type="arc" />
    <link:label id="lab_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4_terseLabel_en-US" xlink:label="lab_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capitalized Fiber Farm Costs</link:label>
    <link:label id="lab_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4_label_en-US" xlink:label="lab_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capitalized Fiber Farm Costs</link:label>
    <link:label id="lab_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4_documentation_en-US" xlink:label="lab_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capitalized fiber farm costs</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_CapitalizedFiberFarmCosts" xlink:label="loc_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4" xlink:to="lab_pkg_CapitalizedFiberFarmCosts_C089658A6E659F1FC7F76BA090636EE4" xlink:type="arc" />
    <link:label id="lab_us-gaap_Depletion_85419B2E73158A2945926BA09063ADE4_terseLabel_en-US" xlink:label="lab_us-gaap_Depletion_85419B2E73158A2945926BA09063ADE4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depletion expense</link:label>
    <link:label id="lab_us-gaap_Depletion_85419B2E73158A2945926BA09063ADE4_label_en-US" xlink:label="lab_us-gaap_Depletion_85419B2E73158A2945926BA09063ADE4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depletion</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Depletion" xlink:label="loc_us-gaap_Depletion_85419B2E73158A2945926BA09063ADE4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Depletion_85419B2E73158A2945926BA09063ADE4" xlink:to="lab_us-gaap_Depletion_85419B2E73158A2945926BA09063ADE4" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalizedComputerSoftwareNet_6743767ECF5995B3958E6BA09063B39C_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalizedComputerSoftwareNet_6743767ECF5995B3958E6BA09063B39C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net capitalized software costs</link:label>
    <link:label id="lab_us-gaap_CapitalizedComputerSoftwareNet_6743767ECF5995B3958E6BA09063B39C_label_en-US" xlink:label="lab_us-gaap_CapitalizedComputerSoftwareNet_6743767ECF5995B3958E6BA09063B39C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capitalized Computer Software, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalizedComputerSoftwareNet" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareNet_6743767ECF5995B3958E6BA09063B39C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalizedComputerSoftwareNet_6743767ECF5995B3958E6BA09063B39C" xlink:to="lab_us-gaap_CapitalizedComputerSoftwareNet_6743767ECF5995B3958E6BA09063B39C" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalizedComputerSoftwareAmortization_D60973F3C51987EE330E6BA09063991C_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalizedComputerSoftwareAmortization_D60973F3C51987EE330E6BA09063991C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Software amortization expense</link:label>
    <link:label id="lab_us-gaap_CapitalizedComputerSoftwareAmortization_D60973F3C51987EE330E6BA09063991C_label_en-US" xlink:label="lab_us-gaap_CapitalizedComputerSoftwareAmortization_D60973F3C51987EE330E6BA09063991C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capitalized Computer Software, Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalizedComputerSoftwareAmortization" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareAmortization_D60973F3C51987EE330E6BA09063991C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalizedComputerSoftwareAmortization_D60973F3C51987EE330E6BA09063991C" xlink:to="lab_us-gaap_CapitalizedComputerSoftwareAmortization_D60973F3C51987EE330E6BA09063991C" xlink:type="arc" />
    <link:label id="lab_pkg_ChangesInProjectedBenefitObligationFairValueOfPlanAssetsAndFundedStatusTableTextBlock_6B9FD9BB1665269DCE9B562EFA465E0E_terseLabel_en-US" xlink:label="lab_pkg_ChangesInProjectedBenefitObligationFairValueOfPlanAssetsAndFundedStatusTableTextBlock_6B9FD9BB1665269DCE9B562EFA465E0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Obligations and Funded Status of Defined Benefit Pension and Postretirement Benefit Plans</link:label>
    <link:label id="lab_pkg_ChangesInProjectedBenefitObligationFairValueOfPlanAssetsAndFundedStatusTableTextBlock_6B9FD9BB1665269DCE9B562EFA465E0E_label_en-US" xlink:label="lab_pkg_ChangesInProjectedBenefitObligationFairValueOfPlanAssetsAndFundedStatusTableTextBlock_6B9FD9BB1665269DCE9B562EFA465E0E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changes in Projected Benefit Obligation, Fair Value of Plan Assets, and Funded Status [Table Text Block]</link:label>
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    <link:label id="lab_pkg_TwoThousandAndThreeInterestRateProtectionAgreementMember_9E1790B0A9138066A7AE6B74A44FB959_terseLabel_en-US" xlink:label="lab_pkg_TwoThousandAndThreeInterestRateProtectionAgreementMember_9E1790B0A9138066A7AE6B74A44FB959" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2003 Interest Rate Protection Agreement</link:label>
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    <link:label id="lab_pkg_TwoThousandAndThreeInterestRateProtectionAgreementMember_9E1790B0A9138066A7AE6B74A44FB959_documentation_en-US" xlink:label="lab_pkg_TwoThousandAndThreeInterestRateProtectionAgreementMember_9E1790B0A9138066A7AE6B74A44FB959" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand And Three Interest Rate Protection Agreement [Member]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_TwoThousandAndThreeInterestRateProtectionAgreementMember" xlink:label="loc_pkg_TwoThousandAndThreeInterestRateProtectionAgreementMember_9E1790B0A9138066A7AE6B74A44FB959" xlink:type="locator" />
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    <link:label id="lab_pkg_TwoThousandAndEightInterestRateProtectionAgreementMember_B96D2C6251329D812A3F6B74A44F8279_terseLabel_en-US" xlink:label="lab_pkg_TwoThousandAndEightInterestRateProtectionAgreementMember_B96D2C6251329D812A3F6B74A44F8279" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2008 Interest Rate Protection Agreement</link:label>
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    <link:label id="lab_pkg_TwoThousandAndEightInterestRateProtectionAgreementMember_B96D2C6251329D812A3F6B74A44F8279_documentation_en-US" xlink:label="lab_pkg_TwoThousandAndEightInterestRateProtectionAgreementMember_B96D2C6251329D812A3F6B74A44F8279" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand And Eight Interest Rate Protection Agreement</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_TwoThousandAndEightInterestRateProtectionAgreementMember" xlink:label="loc_pkg_TwoThousandAndEightInterestRateProtectionAgreementMember_B96D2C6251329D812A3F6B74A44F8279" xlink:type="locator" />
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    <link:label id="lab_pkg_TwoThousandAndTenInterestRateProtectionAgreementMember_BD85760E552014E03A926B74A44F1C8D_terseLabel_en-US" xlink:label="lab_pkg_TwoThousandAndTenInterestRateProtectionAgreementMember_BD85760E552014E03A926B74A44F1C8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2010 Interest Rate Protection Agreement</link:label>
    <link:label id="lab_pkg_TwoThousandAndTenInterestRateProtectionAgreementMember_BD85760E552014E03A926B74A44F1C8D_label_en-US" xlink:label="lab_pkg_TwoThousandAndTenInterestRateProtectionAgreementMember_BD85760E552014E03A926B74A44F1C8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand And Ten Interest Rate Protection Agreement [Member]</link:label>
    <link:label id="lab_pkg_TwoThousandAndTenInterestRateProtectionAgreementMember_BD85760E552014E03A926B74A44F1C8D_documentation_en-US" xlink:label="lab_pkg_TwoThousandAndTenInterestRateProtectionAgreementMember_BD85760E552014E03A926B74A44F1C8D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand And Ten Interest Rate Protection Agreement</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_TwoThousandAndTenInterestRateProtectionAgreementMember" xlink:label="loc_pkg_TwoThousandAndTenInterestRateProtectionAgreementMember_BD85760E552014E03A926B74A44F1C8D" xlink:type="locator" />
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    <link:label id="lab_pkg_TwoThousandAndElevenInterestRateProtectionAgreementMember_EEE5EC7C51D9E71A959F6B74A44F9C33_terseLabel_en-US" xlink:label="lab_pkg_TwoThousandAndElevenInterestRateProtectionAgreementMember_EEE5EC7C51D9E71A959F6B74A44F9C33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2011 Interest Rate Protection Agreement</link:label>
    <link:label id="lab_pkg_TwoThousandAndElevenInterestRateProtectionAgreementMember_EEE5EC7C51D9E71A959F6B74A44F9C33_label_en-US" xlink:label="lab_pkg_TwoThousandAndElevenInterestRateProtectionAgreementMember_EEE5EC7C51D9E71A959F6B74A44F9C33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand And Eleven Interest Rate Protection Agreement [Member]</link:label>
    <link:label id="lab_pkg_TwoThousandAndElevenInterestRateProtectionAgreementMember_EEE5EC7C51D9E71A959F6B74A44F9C33_documentation_en-US" xlink:label="lab_pkg_TwoThousandAndElevenInterestRateProtectionAgreementMember_EEE5EC7C51D9E71A959F6B74A44F9C33" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand And Eleven Interest Rate Protection Agreement [Member]</link:label>
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    <link:label id="lab_us-gaap_DerivativeLineItems_38DAC927309FE1B1BD6D6B74A44F50D1_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLineItems_38DAC927309FE1B1BD6D6B74A44F50D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative [Line Items]</link:label>
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    <link:label id="lab_us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet_34976E4DBFC07D9B29BE6B74A4504686_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet_34976E4DBFC07D9B29BE6B74A4504686" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ineffective portion of derivative instruments</link:label>
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    <link:label id="lab_us-gaap_DerivativeGainOnDerivative_C3EE26FDBC720B1D51726B74A4506C3F_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeGainOnDerivative_C3EE26FDBC720B1D51726B74A4506C3F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Settlement gains from interest rate protection agreement</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeGainOnDerivative" xlink:label="loc_us-gaap_DerivativeGainOnDerivative_C3EE26FDBC720B1D51726B74A4506C3F" xlink:type="locator" />
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    <link:label id="lab_pkg_LossOnForeignCurrencyCashFlowHedgeDerivatives_78ECABC84BC5A1E9A9E46B74A4504F92_terseLabel_en-US" xlink:label="lab_pkg_LossOnForeignCurrencyCashFlowHedgeDerivatives_78ECABC84BC5A1E9A9E46B74A4504F92" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency forward contracts settled for a loss, amount</link:label>
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    <link:label id="lab_pkg_LossOnForeignCurrencyCashFlowHedgeDerivatives_78ECABC84BC5A1E9A9E46B74A4504F92_documentation_en-US" xlink:label="lab_pkg_LossOnForeignCurrencyCashFlowHedgeDerivatives_78ECABC84BC5A1E9A9E46B74A4504F92" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of loss recorded in accumulated other comprehensive income pertaining to the settlement of foreign currency exchange rate derivatives designated as cash flow hedging instruments to the extent that a cash flow hedge is determined to be effective.</link:label>
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    <link:label id="lab_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_5D32AEB53FFA181143186B74A4506BE3_terseLabel_en-US" xlink:label="lab_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_5D32AEB53FFA181143186B74A4506BE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net amount of settlement gains (losses) on derivative instruments included in accumulated OCI to be amortized over next 12 months, before tax</link:label>
    <link:label id="lab_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_5D32AEB53FFA181143186B74A4506BE3_label_en-US" xlink:label="lab_us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths_5D32AEB53FFA181143186B74A4506BE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months</link:label>
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    <link:label id="lab_pkg_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax_780E2ECFBF69C85CBDE46B74A450B809_terseLabel_en-US" xlink:label="lab_pkg_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax_780E2ECFBF69C85CBDE46B74A450B809" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net amount of settlement gains (losses) on derivative instruments included in accumulated OCI to be amortized over next 12 months, after tax</link:label>
    <link:label id="lab_pkg_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax_780E2ECFBF69C85CBDE46B74A450B809_label_en-US" xlink:label="lab_pkg_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax_780E2ECFBF69C85CBDE46B74A450B809" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months Net Of Tax</link:label>
    <link:label id="lab_pkg_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax_780E2ECFBF69C85CBDE46B74A450B809_documentation_en-US" xlink:label="lab_pkg_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax_780E2ECFBF69C85CBDE46B74A450B809" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months, net of tax.</link:label>
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    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_77C9E2759D34A3C4D2F06618B1638DC8_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_77C9E2759D34A3C4D2F06618B1638DC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_77C9E2759D34A3C4D2F06618B1638DC8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_CC8C74893520C50B797D6618B1635D34_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_CC8C74893520C50B797D6618B1635D34" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Flows from Operating Activities:</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_CC8C74893520C50B797D6618B1635D34" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetIncomeLoss_7B9353B852336366EC586618B163B25C_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_7B9353B852336366EC586618B163B25C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_7B9353B852336366EC586618B163B25C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0DE750F8E7E32574491A6618B163A5ED_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0DE750F8E7E32574491A6618B163A5ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income to net cash provided by operating activities:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0DE750F8E7E32574491A6618B163A5ED_label_en-US" xlink:label="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0DE750F8E7E32574491A6618B163A5ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
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    <link:label id="lab_pkg_DepreciationDepletionAmortizationAndOtherCashFlowImpact_70EF942678FFDFAB32C46618B163A208_terseLabel_en-US" xlink:label="lab_pkg_DepreciationDepletionAmortizationAndOtherCashFlowImpact_70EF942678FFDFAB32C46618B163A208" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation, depletion, and amortization</link:label>
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    <link:label id="lab_pkg_DepreciationDepletionAmortizationAndOtherCashFlowImpact_70EF942678FFDFAB32C46618B163A208_documentation_en-US" xlink:label="lab_pkg_DepreciationDepletionAmortizationAndOtherCashFlowImpact_70EF942678FFDFAB32C46618B163A208" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The aggregate non-cash expense recognized in the current period that allocates the cost of tangible and intangible assets to periods that benefit from use of the assets.</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensation_C8C6C171390783540F416618B16316F2_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_C8C6C171390783540F416618B16316F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based compensation expense</link:label>
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    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_3C7A57DAB937900032B76618B163BFC8_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_3C7A57DAB937900032B76618B163BFC8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income tax provision (benefit)</link:label>
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    <link:label id="lab_pkg_AlternativeFuelMixtureCreditChange_4CC05D788A7ADFF63A866618B1633159_negatedLabel_en-US" xlink:label="lab_pkg_AlternativeFuelMixtureCreditChange_4CC05D788A7ADFF63A866618B1633159" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Alternative energy tax credits</link:label>
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    <link:label id="lab_pkg_AlternativeFuelMixtureCreditChange_4CC05D788A7ADFF63A866618B1633159_documentation_en-US" xlink:label="lab_pkg_AlternativeFuelMixtureCreditChange_4CC05D788A7ADFF63A866618B1633159" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the net change in the amount of alternative fuel mixture credits due the entity for the production and use of alternative fuels in the entity's trade or business.</link:label>
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    <link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_6F399C0A206344C68CCD6618B163654C_negatedLabel_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_6F399C0A206344C68CCD6618B163654C" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Loss on early extinguishment of debt</link:label>
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    <link:label id="lab_pkg_PensionAndPostretirementBenefitsContributionsExpenseNet_4B0DA71C72CF392590B46618B16331B4_negatedLabel_en-US" xlink:label="lab_pkg_PensionAndPostretirementBenefitsContributionsExpenseNet_4B0DA71C72CF392590B46618B16331B4" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Pension and postretirement benefits expense, net of contributions</link:label>
    <link:label id="lab_pkg_PensionAndPostretirementBenefitsContributionsExpenseNet_4B0DA71C72CF392590B46618B16331B4_label_en-US" xlink:label="lab_pkg_PensionAndPostretirementBenefitsContributionsExpenseNet_4B0DA71C72CF392590B46618B16331B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension And Postretirement Benefits Contributions Expense Net</link:label>
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    <link:loc xlink:href="pkg-20131231.xsd#pkg_PensionAndPostretirementBenefitsContributionsExpenseNet" xlink:label="loc_pkg_PensionAndPostretirementBenefitsContributionsExpenseNet_4B0DA71C72CF392590B46618B16331B4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_42C4DEC388BA797270676618B163E08C_terseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_42C4DEC388BA797270676618B163E08C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other, net</link:label>
    <link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_42C4DEC388BA797270676618B163E08C_label_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_42C4DEC388BA797270676618B163E08C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Operating Activities, Cash Flow Statement</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_5A769CC9B7B2A75AE9726618B16323E7_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_5A769CC9B7B2A75AE9726618B16323E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in operating assets and liabilities, net of acquisitions:</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_5A769CC9B7B2A75AE9726618B16323E7" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_2394B6215D54C6FD70336618B163FA90" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_A78FACE9ED7013D8AC8F6618B163CF9F_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_A78FACE9ED7013D8AC8F6618B163CF9F" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_2B79E61EA82574DFD2D96618B1635B25_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_2B79E61EA82574DFD2D96618B1635B25" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Prepaid expenses and other current assets</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_66D07CEF0A0BD236C89C6618B16345B2_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_66D07CEF0A0BD236C89C6618B16345B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) in liabilities -</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_D322CF5A41787E9AA1916618B1635E79_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_D322CF5A41787E9AA1916618B1635E79" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
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    <link:label id="lab_us-gaap_EarningsPerShareBasic_A185851180F9732B8B636FC1E45F3EAE_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_A185851180F9732B8B636FC1E45F3EAE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic income per common share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_A185851180F9732B8B636FC1E45F3EAE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_EarningsPerShareDiluted_8EDC3FD06CB19559A9216FC1E45F19C5_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_8EDC3FD06CB19559A9216FC1E45F19C5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Diluted income per common share</link:label>
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    <link:label id="lab_pkg_HighStockPricePerShare_7FFA10552EBEA72D19236FC1E45FE727_terseLabel_en-US" xlink:label="lab_pkg_HighStockPricePerShare_7FFA10552EBEA72D19236FC1E45FE727" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock price - high</link:label>
    <link:label id="lab_pkg_HighStockPricePerShare_7FFA10552EBEA72D19236FC1E45FE727_label_en-US" xlink:label="lab_pkg_HighStockPricePerShare_7FFA10552EBEA72D19236FC1E45FE727" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">High Stock Price Per Share</link:label>
    <link:label id="lab_pkg_HighStockPricePerShare_7FFA10552EBEA72D19236FC1E45FE727_documentation_en-US" xlink:label="lab_pkg_HighStockPricePerShare_7FFA10552EBEA72D19236FC1E45FE727" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the high price of the Company's stock during the reporting period.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_HighStockPricePerShare" xlink:label="loc_pkg_HighStockPricePerShare_7FFA10552EBEA72D19236FC1E45FE727" xlink:type="locator" />
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    <link:label id="lab_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952_terseLabel_en-US" xlink:label="lab_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock price - low</link:label>
    <link:label id="lab_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952_label_en-US" xlink:label="lab_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Low Stock Price Per Share</link:label>
    <link:label id="lab_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952_documentation_en-US" xlink:label="lab_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the low price of the Company's stock during the reporting period.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_LowStockPricePerShare" xlink:label="loc_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952" xlink:to="lab_pkg_LowStockPricePerShare_20F62D69A644E0C806056FC1E45F4952" xlink:type="arc" />
    <link:label id="lab_us-gaap_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability_260463319C763A08DC726FC1E45F55A3_terseLabel_en-US" xlink:label="lab_us-gaap_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability_260463319C763A08DC726FC1E45F55A3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Decrease (Increase) in net income</link:label>
    <link:label id="lab_us-gaap_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability_260463319C763A08DC726FC1E45F55A3_label_en-US" xlink:label="lab_us-gaap_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability_260463319C763A08DC726FC1E45F55A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Quarterly Financial Information, Quarterly Charges and Credits, Amount Affecting Comparability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability" xlink:label="loc_us-gaap_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability_260463319C763A08DC726FC1E45F55A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability_260463319C763A08DC726FC1E45F55A3" xlink:to="lab_us-gaap_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability_260463319C763A08DC726FC1E45F55A3" xlink:type="arc" />
    <link:label id="lab_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81_terseLabel_en-US" xlink:label="lab_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Decrease (Increase) in net income per diluted share</link:label>
    <link:label id="lab_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81_label_en-US" xlink:label="lab_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Quarterly Financial Information Quarterly Charges And Credits Amount Per Diluted Share Affecting Comparability</link:label>
    <link:label id="lab_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81_documentation_en-US" xlink:label="lab_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Per share amount of the item included in the interim period that affected period-to-period comparability (excluding restatement adjustments).</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability" xlink:label="loc_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81" xlink:to="lab_pkg_QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountPerDilutedShareAffectingComparability_1285D52B3D22ABA5AE046FC1E45FEE81" xlink:type="arc" />
    <link:label id="lab_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3_terseLabel_en-US" xlink:label="lab_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Allowance for doubtful accounts and customer deductions</link:label>
    <link:label id="lab_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3_label_en-US" xlink:label="lab_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance For Doubtful Accounts Receivable And Reserve For Customer Deductions Current</link:label>
    <link:label id="lab_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3_documentation_en-US" xlink:label="lab_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">A valuation allowance for trade and other receivables due to an entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible, and a reserve for estimated customer returns, allowances and earned discounts.</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent" xlink:label="loc_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3" xlink:to="lab_pkg_AllowanceForDoubtfulAccountsReceivableAndReserveForCustomerDeductionsCurrent_DBBCBDEC08E56262B85B562EFC912DE3" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_B7A43E05EE153028B2BE562EFC91813F_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_B7A43E05EE153028B2BE562EFC91813F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, par value</link:label>
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_B7A43E05EE153028B2BE562EFC91813F_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_B7A43E05EE153028B2BE562EFC91813F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_B7A43E05EE153028B2BE562EFC91813F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare_B7A43E05EE153028B2BE562EFC91813F" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare_B7A43E05EE153028B2BE562EFC91813F" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_D91F77DF127A892F8C85562EFC91FC79_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_D91F77DF127A892F8C85562EFC91FC79" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares authorized</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_D91F77DF127A892F8C85562EFC91FC79_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_D91F77DF127A892F8C85562EFC91FC79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_D91F77DF127A892F8C85562EFC91FC79" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesAuthorized_D91F77DF127A892F8C85562EFC91FC79" xlink:to="lab_us-gaap_CommonStockSharesAuthorized_D91F77DF127A892F8C85562EFC91FC79" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesIssued_5A31599974AA6D3A8CD8562EFC91084F_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_5A31599974AA6D3A8CD8562EFC91084F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares issued</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesIssued_5A31599974AA6D3A8CD8562EFC91084F_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_5A31599974AA6D3A8CD8562EFC91084F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_5A31599974AA6D3A8CD8562EFC91084F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_5A31599974AA6D3A8CD8562EFC91084F" xlink:to="lab_us-gaap_CommonStockSharesIssued_5A31599974AA6D3A8CD8562EFC91084F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_5F48F96E294EC14BE312562EFBD74BD9_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_5F48F96E294EC14BE312562EFBD74BD9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule II - Valuation and Qualifying Accounts</link:label>
    <link:label id="lab_us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_5F48F96E294EC14BE312562EFBD74BD9_label_en-US" xlink:label="lab_us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_5F48F96E294EC14BE312562EFBD74BD9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock" xlink:label="loc_us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_5F48F96E294EC14BE312562EFBD74BD9" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AssetRetirementObligationDisclosureAbstract_0252F8138AF4C91DCC326B096B09CF5B_label_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationDisclosureAbstract_0252F8138AF4C91DCC326B096B09CF5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Retirement Obligation Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetRetirementObligationDisclosureAbstract" xlink:label="loc_us-gaap_AssetRetirementObligationDisclosureAbstract_0252F8138AF4C91DCC326B096B09CF5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetRetirementObligationDisclosureAbstract_0252F8138AF4C91DCC326B096B09CF5B" xlink:to="lab_us-gaap_AssetRetirementObligationDisclosureAbstract_0252F8138AF4C91DCC326B096B09CF5B" xlink:type="arc" />
    <link:label id="lab_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1_terseLabel_en-US" xlink:label="lab_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset Retirement Obligation [Table]</link:label>
    <link:label id="lab_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1_label_en-US" xlink:label="lab_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Retirement Obligation [Table]</link:label>
    <link:label id="lab_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1_documentation_en-US" xlink:label="lab_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Asset Retirement Obligation [Table]</link:label>
    <link:loc xlink:href="pkg-20131231.xsd#pkg_AssetRetirementObligationTable" xlink:label="loc_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1" xlink:to="lab_pkg_AssetRetirementObligationTable_55A8E7F0BFCF2A92CB286B096B0BB5D1" xlink:type="arc" />
    <link:label id="lab_pkg_AssetRetirementObligationLineItems_8F3B6D446CE1549D21DE6B096B0B615A_terseLabel_en-US" xlink:label="lab_pkg_AssetRetirementObligationLineItems_8F3B6D446CE1549D21DE6B096B0B615A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset Retirement Obligation [Line Items]</link:label>
    <link:label id="lab_pkg_AssetRetirementObligationLineItems_8F3B6D446CE1549D21DE6B096B0B615A_label_en-US" xlink:label="lab_pkg_AssetRetirementObligationLineItems_8F3B6D446CE1549D21DE6B096B0B615A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Retirement Obligation [Line Items]</link:label>
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    <link:label id="lab_pkg_EarningsPerShareLineItems_1D57EB40EF314CF65D226BA9D75EC4B1_documentation_en-US" xlink:label="lab_pkg_EarningsPerShareLineItems_1D57EB40EF314CF65D226BA9D75EC4B1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Line Items]</link:label>
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    <link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_FF5483779D6922F661F06BA9D75ED45D_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_FF5483779D6922F661F06BA9D75ED45D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Weighted average basic common shares outstanding</link:label>
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