Document:

<PAGE>

                                                                      Exhibit 4C

                             JPS Packaging Company
                      First Amendment To Credit Agreement

     This First Amendment to Credit Agreement (herein, the "Amendment") is
entered into as of January 24, 2000, between JPS Packaging Company, a Delaware
corporation (the "Company"), and Harris Trust and Savings Bank (the "Bank").

                             Preliminary Statements

     A.   The Company and the Bank entered into a certain Credit Agreement,
dated as of June 30, 1998 (the Credit Agreement, as the same has been amended
prior to the date hereof, being referred to herein as the "Credit Agreement").
All capitalized terms used herein without definition shall have the same
meanings herein as such terms have in the Credit Agreement.

     B.   The Company has requested that the Bank amend certain financial
covenants and make certain other amendments to the Credit Agreement, and the
Bank is willing to do so under the terms and conditions set forth in this
Amendment.

     Now, Therefore, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties hereto agree as
follows:

Section 1.  Amendments.

     Subject to the satisfaction of the conditions precedent set forth in
Section 2 below, the Credit Agreement shall be and hereby is amended as follows:

          1.1. Section 5.1 of the Credit Agreement shall be and is hereby
     amended by adding the following definition at the end thereof:

          "Year 2000 Problem" means any significant risk that computer hardware,
          software, or equipment containing embedded microchips essential to the
          business or operations of the Company or any of its Subsidiaries will
          not, in the case of dates or time periods occurring after December 31,
          1999, function at least as efficiently and reliably as in the case of
          times or time periods occurring before January 1, 2000, including the
          making of accurate leap year calculations.

          1.2. Section 6 of the Credit Agreement shall be and is hereby
     amended by adding the following Section at the end thereof:

          Section 6.18. Year 2000 Compliance. The Company has conducted a
          comprehensive review and assessment of the computer applications of
          the Company and its Subsidiaries and is making inquiry of their
          material suppliers, vendors (including data
<PAGE>

          processors) and customers, with respect to any defect in computer
          software, data bases, hardware, controls and peripherals related to
          the occurrence of the year 2000 or the use at any time of any date
          which is before, on and after December 31, 1999, in connection
          therewith. Based on the foregoing review, assessment and inquiry, the
          Company believes that no such defect could reasonably be expected to
          have a material adverse effect on the business or financial affairs of
          the Company (or of the Company and its Subsidiaries taken on a
          consolidated basis).

          1.3. Section 8 of the Credit Agreement shall be and is hereby amended
     by adding the following Section at the end thereof:

          Section 8.22. Year 2000 Assessment. The Company shall take all actions
          necessary and commit adequate resources to assure that its computer-
          based and other systems (and those of all Subsidiaries) are able to
          effectively process dates, including dates before, on and after
          January 1, 2000, without experiencing any Year 2000 Problem that could
          cause a material adverse effect on the business or financial affairs
          of the Company (or of the Company and its Subsidiaries taken on a
          consolidated basis). At the request of the Bank, the Company will
          provide the Bank with written assurances and substantiation
          (including, but not limited to, the results of internal or external
          audit reports prepared in the ordinary course of business) reasonably
          acceptable to the Bank as to the capability of the Company and its
          Subsidiaries to conduct its and their businesses and operations
          before, on and after January 1, 2000, without experiencing a Year 2000
          Problem causing a material adverse effect on the business or financial
          affairs of the Company (or of the Company and its Subsidiaries taken
          on a consolidated basis).

          1.4. Sections 8.7, 8.8 and 8.9 of the Credit Agreement shall be
     amended in the entirety and as so amended shall be restated as follows:

          Section 8.7. Tangible Net Worth. The Company shall, at all times
          during each of the periods below, maintain Tangible Net Worth at not
          less than:

                                                             Tangible Net Worth
             From and                       To and             shall not be
            including                     including             less than:

        November 1, 1999              December 31, 2000         $36,000,000
        January 1, 2001               December 31, 2001         $36,500,000

                                      -2-
<PAGE>

          Section 8.8. EBITDA. (a) Quarterly Test. The Company shall, as of the
          last day of each calendar month ending during any one of the periods
          specified below, maintain EBITDA for the three calendar months then
          ended of not less than:

            From and                        To and            EBITDA shall not
            including                     including             be less than:

             12/16/99                      3/15/00               $  300,000
             3/16/00               At all times thereafter       $1,000,000

          (b)  Annual Test.  The Company shall, as of December 31, 2000 and
          December 31, 2001, maintain EBITDA for the fiscal year of the Company
          ended on or about such date of not less than $3,300,000 and
          $4,000,000, respectively.

          Section 8.9.  Capital Expenditures.  The Company shall not, nor shall
          it permit any Subsidiary to, expend or become obligated for capital
          expenditures (as determined in accordance with GAAP) in an aggregate
          amount during any fiscal year of the Company in excess of the amount
          set forth for such year below:

            For the year ending on:             Capital Expenditures shall
                                                     not be more than:

                   12/31/00                              $4,500,000

                   12/31/01                              $5,000,000

Section 2.  Conditions Precedent.

          The effectiveness of this Amendment is subject to the satisfaction of
     all of the following conditions precedent:

               2.1. The Company and the Bank shall have executed and delivered
          this Amendment.

               2.2. The Bank shall have received copies (executed or certified,
          as may be appropriate) of all legal documents or proceedings taken in
          connection with the execution and delivery of this Amendment to the
          extent the Bank or its counsel may reasonably request.

               2.3. Legal matters incident to the execution and delivery of this
          Amendment shall be satisfactory to the Bank and its counsel.

                                      -3-
<PAGE>

Section 3.  Representations.

     In order to induce the Bank to execute and deliver this Amendment, the
Company hereby represents to the Bank that as of the date hereof the
representations and warranties set forth in Section 6 of the Credit Agreement
are and shall be and remain true and correct (except that the representations
contained in Section 6.5 shall be deemed to refer to the most recent financial
statements of the Company delivered to the Bank) and the Company is in
compliance with the terms and conditions of the Credit Agreement and no Default
or Event of Default has occurred and is continuing under the Credit Agreement or
shall result after giving effect to this Amendment.

Section 4.  Miscellaneous.

     4.1. The Company heretofore executed and delivered to the Bank the Security
Agreement, Mortgages, Patent Agreement and Trademark Agreement and certain other
Collateral Documents. The Company hereby acknowledges and agrees that the Liens
created and provided for by the Collateral Documents continue to secure, among
other things, the Obligations arising under the Credit Agreement as amended
hereby; and the Collateral Documents and the rights and remedies of the Bank
thereunder, the obligations of the Company thereunder, and the Liens created and
provided for thereunder remain in full force and effect and shall not be
affected, impaired or discharged hereby. Nothing herein contained shall in any
manner affect or impair the priority of the liens and security interests created
and provided for by the Collateral Documents as to the indebtedness which would
be secured thereby prior to giving effect to this Amendment.

     4.2. Except as specifically amended herein, the Credit Agreement shall
continue in full force and effect in accordance with its original terms.
Reference to this specific Amendment need not be made in the Credit Agreement,
the Revolving Credit Note, or any other instrument or document executed in
connection therewith, or in any certificate, letter or communication issued or
made pursuant to or with respect to the Credit Agreement, any reference in any
of such items to the Credit Agreement being sufficient to refer to the Credit
Agreement as amended hereby.

     4.3. The Company agrees to pay on demand all costs and expenses of or
incurred by the Bank in connection with the negotiation, preparation, execution
and delivery of this Amendment, including the fees and expenses of counsel for
the Bank.

     4.4. This Amendment may be executed in any number of counterparts, and by
the different parties on different counterpart signature pages, all of which
taken together shall constitute one and the same agreement. Any of the parties
hereto may execute this Amendment by signing any such counterpart and each of
such counterparts shall for all purposes be deemed to be an original. This
Amendment shall be governed by the internal laws of the State of Illinois.

                          [Signature Page to Follow]

                                      -4-
<PAGE>

     This First Amendment to Credit Agreement is entered into as of the date and
year first above written.

                                 JPS Packaging Company

                                 By
                                   Name
                                        -----------------------------
                                   Title
                                        -----------------------------

     Accepted and agreed to.

                                 Harris Trust And Savings Bank

                                 By

                                   Name
                                        ------------------------------
                                   Title
                                        ------------------------------

                                      -5-<PAGE>

                                                                     Exhibit 10d

                              EMPLOYMENT AGREEMENT
                              --------------------

          THIS AGREEMENT is made and entered into as of the 1st day of July,
1998, by and between JPS PACKAGING COMPANY (the "Company") and JOHN T. CARPER
("Employee").

                                   RECITALS

          A.  The Company is duly organized and validly existing as a
corporation in good standing under the laws of the State of Delaware and is
engaged principally in the design and manufacture of flexible packaging
products.

          B.  Employee is duly qualified to render services in connection with
the business of the Company.

          C.  The Company has offered to employ Employee on the basis set forth
in this Agreement, and Employee has indicated his willingness to accept said
offer.

          D.  The parties believe that it is in their best interests to provide
for the specific terms and conditions of Employee's employment.

                                   AGREEMENT

          NOW, THEREFORE, in consideration of the mutual promises and covenants
as hereinafter set forth, the parties agree as follows:

          1.  Employment.

          The Company agrees to employ Employee as President and Chief Operating
Officer of the Company pursuant to the terms set forth below, and Employee
agrees to accept such employment with the Company in accordance with the terms
and conditions set forth in this Agreement.

          2.  Term.

          The term of this Agreement shall begin on July 1, 1998, and shall
continue until either party gives the other thirty (30) days written notice of
its/his election to terminate this Agreement.

          3.  Compensation.

          For services rendered by Employee pursuant to this Agreement, Employee
shall receive from the Company the following:

              (a)  Base Compensation.  Employee's starting base monthly salary
     shall be $12,916.67 ($155,000, annualized amount ["Base Annual Salary"]).
     On or before July 1 of each year (commencing in 1999) during the term of
     this Agreement, the
<PAGE>

     Compensation Committee of the Board of the Directors of the Company (the
     "Board") (or, if no such committee or similar committee exists, the entire
     Board) (the "Compensation Committee") shall review the performance of
     Employee, which review shall serve as the basis for determining the amount
     of increase, if any, of Employee's Base Annual Salary. The amount and terms
     of any such adjustments shall be in the discretion of the Compensation
     Committee; however, typically adjustments to base salary are effective as
     of an employee's employment anniversary date.

              (b)  Incentive Compensation.  As an executive officer of the
     Company, Employee will be eligible to participate in the Company's
     Incentive Compensation Plan (the "Incentive Plan"). Pursuant to the
     Incentive Plan, the Compensation Committee will annually establish both the
     Company-wide goal and individual target awards; provided, however, the
     first period for the Company-wide goal and individual target awards will be
     July 1, 1998 to December 31, 1998. Employee's target award initially will
     be 50% of his Base Annual Salary, prorated for the initial partial year. In
     each successive calendar year, Employee's individual target award will be
     as set at a level not less than 50% of Base Annual Salary by the
     Compensation Committee and Employee's actual incentive bonus will be based
     entirely upon the Company's performance relative to the Company-wide goal,
     all subject to the Incentive Plan as then in effect. Notwithstanding the
     foregoing, payment of bonuses under the Incentive Plan for any year is
     dependent upon Employee's employment with the Company at the end of such
     calendar year.

              (c)  Vacation.  Assuming an employment starting date of July 1,
     1998, Employee will be entitled to accrue two weeks of paid vacation during
     the remainder of 1998 in addition to any carryover of accrued vacation from
     Sealright Co., Inc. at the applicable compensation rate. Commencing in
     1999, Employee will be entitled to accrue four weeks of paid vacation each
     calendar year.

              (d)  Stock Options.  Subject to the terms and conditions of the
     JPS Packaging Company 1998 Long-Term Compensation Plan (the "Plan") and the
     Stock Option Agreement between the Company and Employee attached hereto as
     Schedule A (the "Option Agreement"), the Company will grant to Employee on
     "incentive stock option" (as defined in the Plan) to purchase 55,000 shares
     of the common stock of the Company (the "Option"). The terms and conditions
     of the Option are set forth in the Option Agreement, which is incorporated
     herein and made part of this Agreement.

          4.  Benefits.

          Employee shall be entitled to participate in all benefit programs and
incentive compensation plans that the Company makes generally available to its
executive officers, subject to Employee's meeting the eligibility provisions
thereof and, if applicable, as determined by the Compensation Committee.
Nothing contained herein shall preclude the Company, in its sole discretion,
from changing or amending, in whole or in part, or revoking any one or more of
such benefit programs or compensation plans or adopting new employee benefit
programs or compensation plans.

                                       2
<PAGE>

          5.  Duties.

          During Employee's term of employment by the Company, Employee shall
devote his normal working hours, attention and energies to the Company. Employee
shall serve to the best of his ability and shall perform the duties and have
such responsibilities consistent with Employee's position as President and Chief
Operating Officer of the Company, which duties and responsibilities shall be
similar to those of presidents and chief operating officers of companies in the
packaging industry having revenues comparable to those of the Company. Employee
agrees to abide by the rules, procedures, regulations, instructions, and
practices of the Company and any changes therein which may be adopted from time
to time by the Company.

          6.  Business Expenses.

          In addition to compensation paid to Employee pursuant to Section 3,
during the term of Employee's employment hereunder, the Company agrees to
reimburse Employee for all reasonable and necessary business expenses which
Employee incurs in the performance of his duties hereunder in accordance with
the policies and procedures adopted from time to time by the Company (whether or
not in writing).

          7.  Sale of the Company.

          In the event the Board has resolved to sell the Company (either by
sale of substantially all the assets, merger, consolidation, or other similar
transaction) (the "JPS Sale") and has entered into a letter of intent or
definitive agreement for the JPS Sale with a prospective purchaser within twelve
(12) months of the date of this Agreement, Employee shall receive a bonus in the
amount of:

              (a)  $100,000, if the total sale price of the Company (as
     determined by the actual proceeds received by stockholders of JPS) (the
     "JPS Sale Price") is less than $45,000,000; or

              (b)  $100,000, plus one percent (1%) of the JPS Sale Price in
     excess of $45,000,000, up to a maximum aggregate bonus of $250,000, if the
     JPS Sale Price exceeds $45,000,000.

          8.  Employment Termination.

          The employment of Employee by the Company pursuant to this Agreement
shall terminate upon the occurrence of any of the following:

              (a)  Death or Disability.  Immediately upon the death or
     disability of Employee. For purposes of this Agreement, "disability" shall
     mean the inability of Employee to perform his duties hereunder for a period
     of ninety (90) consecutive calendar days, or for a period of one hundred
     twenty (120) calendar days whether or not consecutive, during any three
     hundred and sixty (360) day period due to a physical or mental incapacity.
     The determination of disability shall be made by a disinterested medical
     doctor, licensed to practice in the State of Kansas, chosen jointly by the
     parties. Notwithstanding the definition of "disability" herein, if and only
     if the Company provides disability insurance coverage to Employee at the
     Company's cost, Employee's

                                       3
<PAGE>

     employment hereunder shall not be terminated by reason of disability until
     the Company's disability insurance carrier has certified Employee as
     disabled and has commenced (or agreed in writing) to pay disability
     benefits to Employee.

              (b)  Cause.  At the election of the Company for cause,
     immediately (except as provided below) upon written notice by the Company
     to Employee. For purposes of this Agreement, "cause" shall mean:

                   (i)  The willful failure by Employee to perform his material
          duties hereunder (other than any such failure resulting from
          Employee's death or disability), as determined in good faith by a
          majority of the Board;

                   (ii)  The (A) continued failure (which failure need not be
          willful) by Employee to perform his material duties hereunder (other
          than any such failure resulting from Employee's death or disability)
          or (B) breach by Employee of any material provision of this Agreement
          (which failure or breach has not been cured by Employee within thirty
          (30) days after written notice thereof by the Board of Directors), all
          as determined in good faith by a majority of the Board;

                   (iii)  Employee's conviction of a felony by a trial court of
          competent jurisdiction, whether or not an appeal is taken; or

                   (iv)  The willful engaging by Employee in unlawful conduct
          (including acts of dishonesty) in connection with the business of the
          Company, as determined in good faith by a majority of the Board.

              (c)  Good Reason.  At the election of Employee for good reason,
     immediately upon written notice by Employee to the Company. For purposes of
     this Agreement, "good reason" shall mean:

                   (i)  A change in Employee's responsibilities, titles, or
          offices that is not consistent with Employee's status and duties
          hereunder; or

                   (ii)  A Change of Control (as hereinafter defined) during the
          period of Employee's employment hereunder. For the purposes of this
          Agreement, the term "Change of Control" shall mean: (A) a person,
          corporation, entity or group, which (collectively) does not
          beneficially own at least twenty-five percent (25%) of the Company's
          issued and outstanding voting stock as of the date hereof, (I) makes a
          tender or exchange offer for the issued and outstanding voting stock
          of the Company and beneficially owns 25% or more of the issued and
          outstanding voting stock after such tender or exchange offer, or (II)
          acquires, directly or indirectly, the beneficial ownership of 25% or
          more of the issued and outstanding voting stock of the Company in a
          single transaction or series of transactions (excluding the
          acquisition of newly issued voting stock of the Company issued in full
          or part payment for the purchase by the Company or any subsidiary of
          the Company of stock or assets), or (B) the Company is a party to a
          merger, consolidation or similar transaction and following such
          transaction 50%

                                       4
<PAGE>

          or more of the issued and outstanding voting securities of the
          resulting entity is beneficially owned by a person, corporation,
          entity or group other than the stockholders of the Company immediately
          prior to the transaction, or (C) the Company sells 50% or more of its
          assets to any other person or persons.

              (d)  Election of Company.  Upon thirty (30) days prior written
     notice from the Company to Employee, for reasons other than "cause," as
     defined in 8(b), above.

              (e)  Election of Employee.  Upon thirty (30) days prior written
     notice from Employee to Company, for reasons other than "good reason," as
     defined in 8(c), above.

          9.  Effect of Termination.

              (a)  Base Compensation and Benefits.  In the event Employee's
     employment is terminated for any reason, all compensation and benefits
     shall cease, except that the Company shall pay to Employee that portion of
     his then Base Annual Compensation that has been earned but unpaid at the
     time of such termination and reimbursable expenses incurred by but not yet
     reimbursed to Employee at the time of such termination.

              (b)  Termination Payment.  In the event Employee's employment is
     terminated by Employee pursuant to Section 8(c) or by the Company pursuant
     to Section 8(d) within twelve (12) months of the date of this Agreement,
     the Company shall pay to Employee a lump sum payment of $168,000, as a
     termination payment, within thirty (30) days of his date of termination, in
     addition to any amounts owed to Employee pursuant to Section 9(a). In the
     event Employee's employment is terminated by Employee pursuant to Section
     8(c) or by the Company pursuant to Section 8(d), at anytime after twelve
     (12) months from the date of this Agreement, the Company shall pay to
     Employee a lump sum payment equal to one-half of his then Base Annual
     Salary, as a termination payment, within thirty (30) days of his date of
     termination, in addition to any amounts owed to Employee pursuant to
     Section 9(a).

              (c)  Stock Options.

                   (i)  In the event Employee's employment is terminated
          pursuant to Section 8(a), (c) or (d), Employee's Option, to the extent
          not previously vested, shall immediately vest and shall become
          exercisable for the total amount of unexercised Option Shares (as
          defined in the Option Agreement) thereunder until the first to occur
          of: (A) midnight on the tenth anniversary of the Grant Date; or (B)
          the one year anniversary date of the termination of Employee. Any such
          exercise following Employee's death may be made only by such
          Employee's personal representative, unless Employee's will
          specifically disposes of the Option, in which case such exercise shall
          be made only by the recipient of such specific disposition. If
          Employee's personal representative, or such recipient, shall be
          entitled to exercise the Option pursuant to the preceding sentence,
          such representative or recipient shall be bound by all the terms and

                                       5
<PAGE>

          conditions of this Agreement, the Option Agreement and the Plan which
          would have applied to Employee's exercise of the Option.

                   (ii)  In the event Employee's employment is terminated
          pursuant to Section 8(b) or by Employee pursuant to Section 8(e), the
          Option shall terminate and expire on the day Employee's employment
          terminates; provided, however, that in the discretion of the Board,
          the Option shall terminate and expire on the day Employee is notified
          of his dismissal.

          10.  Notices.

          Any notice required or permitted to be given under this Agreement
shall be in writing and shall be deemed to have been duly given if delivered
personally or if sent by certified mail, return receipt requested, with first
class postage prepaid, addressed (a) to Employee at 4208 West 91st Street,
Prairie Village, KS 66207, and (b) to the Company at 9201 Packaging Drive,
DeSoto, Kansas 66018, Attention: Chief Executive Officer. Any notice which is
required to be made within a stated period of time shall be deemed timely if
made before midnight of the last day of such period.

          11.  Alteration, Amendment or Termination.

          No change or modification of this Agreement shall be valid unless the
same is in writing and signed by all the parties hereto. No waiver of any
provision of this Agreement shall be valid unless in writing and signed by the
person against whom it is sought to be enforced. The failure of any party at any
time to insist, or a delay in insisting, upon strict performance of any
condition, promise, agreement or understanding set forth herein shall not be
construed as a waiver or relinquishment of the right to insist upon strict
performance of the same condition, promise, agreement, or understanding at a
future time. A waiver or consent given by a party hereto on one occasion shall
be effective only in that instance and shall not be construed as a bar or waiver
of any right on any other occasion. The invalidity or unenforceability of any
particular provision of this Agreement shall not affect the other provisions
hereof, and this Agreement shall be construed in all respects as if such invalid
or unenforceable provisions were omitted.

          12.  Integration.

          This Agreement sets forth (and is intended to be an integration of)
all of the promises, agreements, conditions, understandings, warranties and
representations, oral or written, express or implied, among the parties hereto
with respect to the terms of employment, and there are no promises, agreements,
conditions, understandings, warranties or representations, oral or written,
express or implied, among the parties hereto with respect to the terms of
employment other than as set forth herein.

          13.  Governing Law and Venue.

          This Agreement and all disputes arising hereunder shall be subject to,
governed by and construed in accordance with the laws of the State of Kansas,
irrespective of the fact that one or more of the parties now is or may become a
resident of a different state.  Employee hereby expressly submits and consents
to the exclusive in personam jurisdiction and exclusive venue of

                                       6
<PAGE>

the courts of competent jurisdiction in the State of Kansas, including the
United States District Court for the District of Kansas.

          14.  Benefit and Burden.

          This Agreement shall inure to the benefit of, and shall be binding
upon, the parties hereto and their respective successors, heirs, and personal
representatives. This Agreement, including the Option granted herein, shall not
be assignable, except the Option may be assignable pursuant to Section 9(c)(i).

          15.  Captions.

          The headings of the sections and paragraphs are for convenience only
and in no way define, limit or affect the scope or substance of any section or
paragraph of this Agreement.

          IN WITNESS WHEREOF, the Company has caused this Agreement to be signed
by its duly authorized officers and its corporate seal to be affixed hereto, and
each of the parties hereto has executed this Agreement effective as of the date
and year first above written.

                              COMPANY:

                              JPS PACKAGING COMPANY

                                     /s/ William D. Thomas
                              By:    ___________________________
                                     William D. Thomas
                              Name:  ___________________________
                                     Director
                              Title: ___________________________

                              EMPLOYEE:

                              /s/ John T. Carper
                              __________________________________
                              John T. Carper

                                       7

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