Filter elements for gas or liquid and methods of making such...

Details Filter elements for gas or liquid and methods of making such... Filter elements for gas or liquid and methods of making such...

B - Operations, Transporting

01

D

183/109, 92/10.1

B01D 39/14 (2006.01) B01D 29/11 (2006.01) B01D 36/00 (2006.01) B01D 46/24 (2006.01)

Patent

CA 1077864

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 aluminium, 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 silicon resin or polyurethane. The filter element is formed by mounting the apertured sheet a selected distance above the 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. - 1 -

274781

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