
<PAGE>
 
                                                                    Exhibit 99.6


                   INSTRUCTIONS TO REGISTERED HOLDER AND/OR
        BOOK-ENTRY TRANSFER FACILITY PARTICIPANT FROM BENEFICIAL OWNER
                                      OF
                              POLYMER GROUP, INC.
                     9% Senior Subordinated Notes due 2007

     To Registered Holder and/or Participant of the Book-Entry Transfer
Facility:

     The undersigned hereby acknowledges receipt of the Prospectus, dated 
        , 1997 (as the same may be amended or supplemented from time to time,
the "Prospectus") of Polymer Group, Inc., a Delaware corporation (the
"Company"), and the accompanying Letter of Transmittal (the "Letter of
Transmittal"), that together constitute the Company's offer (the "Exchange
Offer"). Capitalized terms used but not defined herein have the meanings
ascribed to them in the Prospectus.

     This will instruct you, the registered holder and/or book-entry transfer
facility participant, as to action to be taken by you relating to the Exchange
Offer with respect to the 9% Senior Subordinated Notes due 2007 (the "Notes")
held by you for the account of the undersigned.

     The aggregate face amount of the Notes held by you for the account of the
undersigned is (fill in amount):

     $                          of the 9% Senior Subordinated Notes due 2007

     With respect to the Exchange Offer, the undersigned hereby instructs you
(check appropriate box):

     [_]    TO TENDER the following Notes held by you for the account of the
            undersigned (insert principal amount of Notes to be tendered, if
            any): $

     [_]    NOT TO TENDER any Notes held by you for the account of the 
            undersigned.

     If the undersigned instruct you to tender the Notes held by you for the
account of the undersigned, it is understood that you are authorized (a) to
make, on behalf of the undersigned (and the undersigned, by its signature below,
hereby makes to you), the representation and warranties contained in the Letter
of Transmittal that are to be made with respect to the undersigned as a
beneficial owner, including but not limited to the representations that (i) the
undersigned's principal residence is in the state of (fill in state)         , 
(ii) the undersigned is acquiring the Exchange Notes in the ordinary course of
business of the undersigned, (iii) the undersigned is not participating, does
not participate, and has no arrangement or understanding with any person to
participate in the distribution of the Exchange Notes, (iv) the undersigned
acknowledges that any person participating in the Exchange Offer for the purpose
of distributing the Exchange Notes must comply with the registration and
prospectus delivery requirements of the Securities Act of 1933, as amended (the
"Act"), in connection with a secondary resale transaction of the Exchange Notes
acquired by such person and cannot rely on the position of the Staff of the
Securities and Exchange Commission set forth in no-action letters that are
discussed in the section of the Prospectus entitled "The Exchange Offer--Resale
of the Exchange Notes," and (v) the undersigned is not an "affiliate," as
defined in Rule 405 under the Act, of the Company or any Guarantor; (b) to
agree, on behalf of the undersigned, as set forth in the Letter of Transmittal;
and (c) to take such other action as necessary under the Prospectus or the
Letter of Transmittal to effect the valid tender of such Notes.

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     Check this box if the Beneficial Owner of the Notes is a Participating
     Broker-Dealer and such Participating Broker-Dealer acquired the Notes for
[_]  its own account as a result of market-making activities or other trading
     activities. If this box is checked, a copy of these Instructions must be
     received within three New York Stock Exchange trading days after the
     Expiration Date by Polymer Group, Inc., attention James G. Boyd, facsimile
     (803) 747-4092.
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                                   SIGN HERE
 
Name of beneficial owner(s):___________________________________________________
 
Signature(s):__________________________________________________________________
 
Name (please print):___________________________________________________________

Address:_______________________________________________________________________

        _______________________________________________________________________

        _______________________________________________________________________

Telephone number: _____________________________________________________________

Taxpayer Identification or Social Security Number:_____________________________
 
Date:__________________________________________________________________________

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