EXHIBIT 99.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the quarterly report on Form 10-Q of Nashua Corporation (the "Company") for the period ended September 27, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned, Andrew B. Albert, Chairman, President and Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, that: (1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/Andrew B. Albert ---------------------------------- Dated: November 8, 2002 Andrew B. Albert ---------------- Chairman, President and Chief Executive Officer