Patent ID: 9650479
Date: 2017-05-16
CPC Classifications: A61L,B29B,B29C,B29K,B29L,B32B,C08F,C08J,Y10T

Claim:
1. A dense article comprising: a TFE copolymer film having a first endotherm between about 50° C. and about 300° C., a second endotherm between about 320° C. and about 330° C., and a third endotherm between about 350° C. and about 400° C., wherein said TFE copolymer comprises a core shell TFE copolymer and said core shell TFE copolymer comprises at least 3.0% by weight polymerized units of at least one comonomer based on a total weight of said core shell TFE copolymer.