Process for producing thin laminated plastic films

Claim 1

PROCESS FOR PRODUCING A LAMINATE OF A THIN PLASTIC FILM AND A PLURALITY OF THIN FILM STRIPS OF THERMOPLASTIC MATERIAL OF LESS WIDTH THAN SAID FILM WHICH COMPRISES EXTRUDING A THIN FILM OF MOLTEN THERMOPLASTIC ONTO A ROTATABLE CHILL ROLL AHEAD OF THE NIP BETWEEN SAID CHILL ROLL AND A PARALLEL COOPERATING ROTATABLE PRESSURE ROL HAVING A PLURALITY OF SPACED CIRCUMFERENTIAL RAISED RESILIENT SURFACE PORTIONS AND A DEPRESSED CIRCUMFERENTIAL SURFACE PORTION BETWEEN EACH OF SAID RAISED PORTIONS, LEADING A PLURALITY OF PREFORMED THIN FILM STRIPS OF THERMOPLASTIC MATERIAL EACH OF WHICH IS OF LESSER WIDTH THAN THE EXTRUDED FILM AND OF THE SAME WIDTH AS THE CIRCUMFERENTIAL RAISED SURFACE PORTIONS OF SAID PRESSURE ROLL ONE OVER EACH SAID CIRCUMFERENTIAL RAISED SURFACE PORTIONS IN CONTACT WITH AND OVERLAYING ONLY THE WIDTH OF THE SAME THROUGH THE NIP INTO CONTACTING FUSING RELATION WITH THE PLASTIC FILM ON SAID CHILL ROLL WHILE MAINTAINING THE REMAINDER OF THE WIDTH OF SAID EXTRUDED FILM ON THE CHILL ROLL OUT OF CONTACT WITH THE DEPRESSED PORTION OF SAID PRESSURE ROLLER.