Patent ID: 9221206
Filing Date: 2015-12-29
Classification: B29C,B29D,B32B,F16L,Y10T

Abstract:
1. A method to prepare a flexible, see-through, coextruded, multilayer tubular article comprising extruding an inner layer of a polyvinylidene difluoride (PVDF) polymer or a polyvinylidene difluoride copolymer; extruding an intermediate thermoplastic polyurethane (TPU) layer coextruded in tubular form over the inner PVDF layer, and extruding a polyvinyl chloride polymer, coextruded in tubular form over the outside surface of the intermediate layer and being coextensive therewith, wherein the polyvinyl chloride polymer optionally contains a stabilizer or a plasticizer or mixtures thereof.