Patent ID: 6138550
Filing Date: 2000-10-31
Classification: F04B

Abstract:
A method of fabricating a composite diaphragm comprising the steps of:(a) providing a first layer of polytetrafluoroethylene;(b) annealing the first layer by heating the first layer to its gel point and then quenching the first layer;(c) etching a surface of the first layer;(d) applying an adhesive to the surface of the first layer;(e) providing a second layer of a thermoplastic elastomer;(f) disposing the second layer in superposed engagement with the first layer, wherein the adhesive contacts both the first layer and the second layer;(g) applying heat to the superposed first layer and second layer; and(h) applying pressure to the superposed first layer and second layer wherein the first layer is bonded to the second layer to form an integral composite diaphragm.