Hochtemperatur-Polyamid-Fluorpolymer-Schichtstruktur

摘要

A laminar film structure consists of: (i) a core layer of polyimide film; (ii) inner layers of a fluorinated ethylene-propylene copolymer (FEP) bonded to both sides of (i); (iii) an intermediated layer of a blend of PTFE and FEP bonded to both sides of (ii) and (iv) outer layers of FEP bonded to both sides of (iii). Also claimed is an insulated wire or cable spirally wrapped by at least one strip of the laminar film, with the edges overlapped and the strip heat-sealed.