Method for manufacturing laminated articles

Claim 1

IN THE PRODUCTION OF A LAMINATE FROM SHEETS OF WATER-ABSORPTIVE CELLULOSIC FIBERS AND POLYMER OF A DIALLYL ESTER OF A DICARBOXYLIC ACID, THE IMPROVEMENT WHICH COMPRISES, IN COMBINATION, THE STEPS OF: (1) IMPREGNATING A PLURALITY OF SHEETS OF SAID WATER-ABSORPTIVE CELLULOSIC FIBER IN A SOLUTION OF SAID POLYMER AND A PEROXIDE POLYMERIZATION CATALYST; (2) SUPERIMPOSING A PLURALITY OF THE THUS IMPREGNATED SHEETS TO FORM AN UNCURED LAMINATE; (3) FORMING A FILM OF SAID POLYMER AND PEROXIDE POLYMERIZATION CATALYST ON A SMOOTH METAL SURFACE; (4) SUBJECTING SAID FILM TO A TEMPERATURE OF 100* C. TO 150* C. FOR A LIMITED TIME BETWEEN 10 AND 30 MINUTES TO PARTIALLY POLYMERIZE THE FILM TO A FUSIBLE POLYMER WHICH IS TACKY TO HARD AT 20* C.; (5) PLACING THE PARTIALLY POLYMERIZED FILM WHILE STILL ATTACHED TO SAID METAL SURFACE UPON THE SURFACE OF THE ABOVE-SAID CURED LAMINATE; (6) SUBJECTING THE LAMIANTE AND THE PARTIALLY POLYMERIZED FILM ON SAID METAL SURFACE TO A TEMPERTURE BETWEEN 75* C. AND 125* C. WHILE UNDER A PRESSURE OF FROM ABOUT 1 TO 200 POUNDS PER SQUARE INCH FOR A TIME SUFFICIENT TO CONVERT THE POLYMER IN THE LAMINATE TO AN INFUSIBLE POLYMER; (7) SEPARATING THE RESULTING LAMINATE FROM SAID METAL SURFACE.