Patent ID: 8530746

Claim:
A multilayer of polyimide-fluoropolymer insulation structure comprising: a) a base layer of polyimide having first and second major surfaces; and b) a first fluoropolymer layer comprising from about 70 to about 98% by weight of FEP and from about 30 to about 2% by weight of PFA based on the total weight of the first fluoropolymer layer; and c) a second fluoropolymer layer comprising from about 70 to about 98% by weight of FEP and from about 30 to about 2% by weight of PFA based on the total weight of the second fluoropolymer layer; wherein the multilayer polyimide-fluoropolymer insulation structure construction consists of only the three layers of the base layer of polyimide and the first and second fluoropolymer layers, with no identifiable additional continuous layers being present in the composite.