Patent ID: 6998007
Filing Date: 2006-02-14
Classification: B32B,H01B,Y10S,Y10T

Abstract:
1. A method of making a multilayer article comprising the steps of (A) providing a first adhesion resistant layer comprising polyvinylidene fluoropolymer and a core layer having a first face, the core layer comprising a crosslinkable polymer of a composition such that a composite formed by a process consisting essentially of coextruding the core layer with the first adhesion resistant layer would have an interlayer peel strength of less than about 40 g/cm, (B) placing the first adhesion resistant layer coextensively in direct contact with the first face of the core layer to form a composite having the adhesive resistant layer positioned to define a first side of the composite, (C) heating the composite to an elevated temperature above the melting points of the first adhesion resistant layer and the crosslinkable polymer, (D) while maintaining the composite at the elevated temperature, compressing the first adhesion resistant layer and the core layer together with a pressure of at least about 0.1 MPa, (E) radiating the composite from a source positioned proximate to the first side with ultraviolet radiation comprising wavelengths in the range of about 170–400 nm in an amount effective to form intercrosslinking bonds at the first face between the first adhesion resistant layer and the core layer.