METHOD AND APPARATUS FOR BONDING POLYTETRAFLUOROETHYLENE TO A METAL SUBSTRATE AND ARTICLES THEREBY PRODUCED

摘要

Polytetrafluoroethylene (PTFE) (13) is bonded to a metal substrate such as an oil seal casing (5) via an intermediary bonding layer of fluorinated ethylene propylene (FEP) (11). Induction heating is used to rapidly melt the FEP (11) and PTFE (13) without degrading their physical properties. The induction heating unit (9) is preferably controlled by a temperature signal representing the temperature of the metal substrate (5).