Non-woven fabric machine and method

Claim 1

IN A DEVICE FOR PRODUCING A SHEET OF MATERIAL COMPRISING POLYMERIC RESIN HAVING IMBEDDED THEREIN TWO PLANAR LAYERS OF CONTINUOUS FILAMENT STRANDS OF YARN, WHEREIN SAID STRANDS IN EACH OF SAID LAYERS ARE AT LEAST SUBSTANTIALLY PARALLEL TO ONE ANOTHER AND HAVE THEIR AXES IN THE SAME PLANE AND HAVIE THEIR AXES CROSSING IN THE TWO PLANAR LAYERS AND EXTEND SUBSTANTIALLY FROM ONE EDGE OF SAID SHEET TO THE OPPOSITE EDGE OF SAID SHEET, EACH OF SAID PLANES BEING SUBSTANTIALLY PARALLEL TO THE TWO MAJOR SURFACES OF SAID SHEET; A PAIR OF ENDLESS MOVABLE FLEXIBLE MEMBERS, MEANS FOR MAINTAINING SAID FLEXIBLE MEMBERS IN PARALLEL SPACED RELATIONSHIP FOR A PORTION OF THEIR LENGTH, MEANS FOR DRIVING SAID MEMBERS LONGITUDINALLY THROUGH SAID PORTION AT THE SAME RATE AS EACH OTHER, MEANS FOR WINDING WEFT STRAND AROUND SAID PORTION WHEREBY TWO LAYERS OF WEFT STRANDS ARE FORMED, MEANS FOR COMBINING SAID TWO LAYERS INTO A SINGLE LAYER OF WEFT STRANDS, SAID ENDLESS FLEXIBLE MEMBERS EXTENDING ALONSIDE AND BEYOND SAID COMBINING MEANS, MEANS FOR PROVIDING A LAYER OF WARP STRANDS ADJACENT TO SAID SINGLE LAYER OF WEFT STRANDS IN SAID PORTION, MEANS FOR IMPREGNATING SAID WARP AND WEFT LAYERS WITH POLYMERIZABLE MATERIAL, AND MEANS FOR APPLYING HEAT TO SAID IMPREGNATED LAYERS TO POLYMERIZE SAID POLYMERIZABLE MATERIAL IN SAID PORTION WHILE MAINTAINING SAID STRANDS UNDER TENSION, SAID ENDLESS FLEXIBLE MEMBERS EXTENDING PAST SAID IMPREGNATING MEANS AND SAID MEANS FOR APPLYING HEAT, CHARACTERIZED BY SAID COMBINING MEANS COMPRISING AT LEAST ONE ROLL.