Cutting rolled thermoplastic sheet

Claim 1

APPARATUS FOR COATING A WOUND ROLL OF SHEET MATERIAL ON A CORE TO PRODUCE THEREFROM WITHOUT REWINDING A PLURALITY OF NARROWER WOUND ROLLS OF SAID SHEET MATERIAL, WHICH COMPRISES A CUTTER SUPPORT, A CUTTER ASSEMBLY COMPRISING A PAIR OF NARROWLY SPACED CUTTERS ON SAID SUPPORT AND PROVIDING A PAIR OF PARALLEL SERVING SURFACES FOR CUTTING CIRCUMFERENTIALLY A NARROW STRIP OF SAID SHEET MATERIAL FROM SAID ROLLS INTERMEDIATE THE OPPOSITE ENDS THEREOF, A DRIVEN MANDREL OF ROTATING SAID ROLL ABOUT ITS AXIS, MEANS FOR CONTINUOUSLY UNWINDING SAID CUT STRIP FROM SAID ROLL DURING THE CUTTING OF SAID STRIP WHILE THE SHEET MATERIAL ADJACENT TO SAID CUT STRIP IS MAINTAINED IN WOUND CONDITION ON BOTH SIDES OF SAID STRIP TO FORM A PLURALITY OF WOUND ROLLS OF SHEET MATERIAL SEPARATED FROM EACH OTHER BY A NARROW GROOVE THE EDGE PORTIONS OF WHICH ARE CONTACTED BY SAID SERVING SURFACES, SAID GROOVE BEING JUST WIDE ENOUGH TO PERMIT ACCESS TO SAID GROOVE SUPPORT AND CUTTERS TO THE INTERIOR OF SAID WOUND ROLL, THE WIDTH OF SAID SUPPORT AND CUTTERS BEING LESS THAN THE WIDTH OF SAID GROOVE SO THAT SAID CUTTERS ARE AT ALL TIMES SPACED FROM THE SIDE WALLS OF SAID GROOVE, AND MEANS FOR APPLYING PRESSURE TO THE CUTTER CORNERS OF THE MATERIAL BOUNDING SAID CUT GROOVE FOR MAINTAINING THEM SUBSTANTIALLY SQUARE.