Patent ID: 8334351

Claim:
An insulating material formed from a FEP pellet, said FEP pellet comprising a tetrafluoroethylene/hexafluoropropylene copolymer modified with perfluoro(alkyl vinyl ether), having a melt flow rate of 30 (g/10 minutes) or more, and having a volatile content of 0.2% by weight or less, wherein said tetrafluoroethylene/hexafluoropropylene copolymer modified with perfluoro(alkyl vinyl ether) has an adhesion terminus, said adhesion terminus comprising at least one functional group species selected from the group consisting of —COOM, —SO 3 M, —OSO 3 M, —SO 2 F, —SO 2 Cl, —COF, —CH 2 OH, —CONH 2 and —CF═CF 2 , and M being the same or different and representing an alkyl group, a hydrogen atom, a metallic cation or a quaternary ammonium cation.