Method of making filter elements for gas or liquid

Details Method of making filter elements for gas or liquid Method of making filter elements for gas or liquid

1978-06-13

1980-04-01

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

55524, 55525, 156242, 156285, 210498, 210506, 210508, 210510, 428133, 428140, 428201, B32B 310

Patent

active

041960270

ABSTRACT:
A filter element for gas or liquid comprises a layer of glass, ceramic, metal, mineral wool or organic fibres containing, wholly within the layer, an apertured sheet, for example of steel or aluminum, the fibres being bound to one another throughout the layer and through the apertures, as well as to the sheet itself, by a synthetic resin such as silicone resin or polyurethane. The filter element is formed by mounting the apertured sheet a selected distance above a filter surface on which the fibres build up while a slurry containing the fibres is drained through the filter surface. When the fibres have built up to a predetermined distance above the sheet, the fibres containing the sheet are removed and the assembly impregnated with a synthetic resin and cured. Two or more grades of slurry mixture may be used in succession to produce a density grading through the thickness of the fibrous layer. In the case of cylindrical elements, end caps are fitted and made fluid tight by a synthetic resin, a taper fit or a gasket.

REFERENCES:
patent: 2054210 (1936-09-01), Weisenburg
patent: 2417851 (1947-03-01), Young
patent: 2448930 (1948-09-01), Stokes
patent: 2700326 (1955-01-01), Curtis
patent: 2714349 (1955-08-01), Johnston
patent: 3914490 (1975-10-01), Fusiek

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