Method of producing a fluorocarbon filter element

Details Method of producing a fluorocarbon filter element Method of producing a fluorocarbon filter element

1984-05-08

1986-05-13

Fisher, Richard V.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 69, 1563066, 1563096, 55DIG5, 2104932, B29C 5324, B29C 5338, B29C 5384

Patent

active

045884641

ABSTRACT:
The present invention provides a filter element made wholly of fluorocarbons resin, comprising as essential elements a filter material produced by folding a sandwich-form sheet comprising a filter membrane made of a fluorocarbon resin and net supporters made of a thermoplastic fluorocarbon resin superimposed on the both surfaces thereof into a pleat form and liquid-tightly welding the edge parts of the both sides of the pleated sheet, sealed end parts produced by embedding the both end parts of said filter material except the central openings into a thermoplastic fluorocarbon resin to force the resin into the pleats, whereby the both end parts are each integrally and tightly welded, and fluorocarbon resin caps welded liquid-tightly with said sealed end parts, and production thereof.

REFERENCES:
patent: 3457339 (1969-07-01), Pall et al.
patent: 3716436 (1973-02-01), Pall et al.
patent: 3752321 (1973-08-01), McLaren
patent: 3867294 (1975-02-01), Pall et al.
patent: 4033881 (1977-07-01), Pall
patent: 4154688 (1979-05-01), Pall
patent: 4248924 (1981-02-01), Okita
patent: 4304579 (1981-12-01), Granville et al.
patent: 4377010 (1983-03-01), Fydelor et al.
patent: 4414280 (1983-11-01), Silva et al.
"Fluorocarbons, Polymers", John A. Blair, Encyclopedia of Industrial Chemical Analysis, vol. 13, p. 73, 1971, John Wiley & Sons, Inc.

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