Patent ID: 6376061
Filing Date: 2002-04-23
Classification: B32B,C08K,Y10T

Abstract:
A composite multilayer material comprising a metallic backing layer, a porous intermediate layer and an overlay applied thereto, said overlay having a fluorothermoplastic matrix consisting of fluorothermoplastic material having a melting point above 260Â° C., said fluorothermoplastic matrix material comprising PTFE present in an amount no less than any other fluorothermoplastic constituent of the fluorothermoplastic matrix and fillers incorporated into said fluorothermoplastic matrix, characterized by said overlay having incorporated therein at least one powder-form polyaramid and wherein the content of said fluorothermoplastic matrix material amounts to 55-90 vol. %, the content of said fillers amounts to 9.5-44.5 vol. % and the content of said polyaramid amounts to 0.5-10 vol. %.