Patent ID: 6060158
Filing Date: 2000-05-09
Classification: C08J,Y10T

Abstract:
A fluoro-carbon resinous laminate having a crack-resistant surface on a fluoro-carbon resinous layer thereof, consisting essentially of:a polyimide film substrate, wherein the polyimide film substrate has a minimum pyrolysis temperature of 400.degree. C.; anda fluoro-carbon resinous layer of a minimum thickness of 10 .mu.m having a crack-resistant surface on one surface or on both surfaces of said polyimide film substrate;wherein said fluoro-carbon resinous layer is formed by:coating said one surface or said both surfaces of said polyimide film substrate with a fluoro-carbon resinous dispersion comprising a fluoro-carbon resin in a concentration of more than 30% as a single layer, andcuring in a hot air oven in which atmospheric temperature is raised to a minimum of 450.degree. C. or in a far infra-red oven in which atmospheric temperature is raised to a minimum of 400.degree. C.