Method of manufacturing flexible gaskets which withstand chemica

Details Method of manufacturing flexible gaskets which withstand chemica Method of manufacturing flexible gaskets which withstand chemica

1988-11-28

1990-02-06

Thurlow, Jeffery

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156242, 15624417, 15624427, 156297, 156324, 204169, 264 22, 264171, 2642102, 264236, 277228, 277DIG6, B29C 4706, B32B 2508, B32B 3104, B32B 3128

Patent

active

048986380

ABSTRACT:
In order to manufacture sealing gaskets for receptacles containing aggressive chemical substances, one known technique consists in coating a film of PTFE or other plastic material onto rubber. However, in the past, it has been possible to ensure that the film adheres adequately to the rubber only by making use of an intermediate glue. The present method causes a film of PTFE to adhere directly on a sheet of rubber by treating one of the faces of the PTFE film by the corona effect and then rolling the treated film against the rubber while still raw and vulcanizing the resulting laminated structure.

REFERENCES:
patent: 3030290 (1962-04-01), Ryan, Jr.
patent: 3323965 (1967-06-01), Hanle et al.
patent: 4133927 (1979-01-01), Tomoda et al.
patent: 4389271 (1983-06-01), Shandy et al.
patent: 4397706 (1983-08-01), Allen et al.

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