Patent ID: 8158260

Claim:
A fluoropolymer molding method for producing a molded article, wherein the fluoropolymer comprises fluoropolymer particles each having a multi-layer structure consisting of at least two types of fluoropolymers having different melting points, with at least one inner layer made of polytetrafluoroethylene having a melt flow rate of 0 g/10 min. as measured by the procedure of ASTM D-1238-95 at a temperature of 372±1° C. and a load of 5 kg, and wherein said fluoropolymer of the outermost layer is tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer (PFA), and wherein said fluoropolymer particles comprise from 70 to 95 weight percent of said polytetrafluoroethylene having a melt flow rate of 0 g/10 min., said method comprising molding said fluoropolymer at a temperature higher than the melting point of said tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer (PFA) of said outermost layer and lower than the melting point of said polytetrafluoroethylene having a melt flow rate of 0 g/10 min., and thereby forming said molded article.