Filter element and method for the manufacture thereof

Details Filter element and method for the manufacture thereof Filter element and method for the manufacture thereof

B - Operations, Transporting

01

D

B01D 39/16 (2006.01) B01D 27/02 (2006.01) B01D 29/11 (2006.01) B01D 46/24 (2006.01) B27N 5/02 (2006.01)

Patent

CA 2146135

A filter element (10) comprises a porous, thick-walled, integral, self- supporting, resin impregnated and bonded fibrous, tubular filter structure (11) having a hollow core (15); an inner shell (20) of a first large pore size porous media adjacent the hollow core and forming the majority of the filter structure; and an outer shell (21) of a second small pore size porous media, finer than the first porous media and adjacent the inner shell, the first and second porous media being resin impregnated and bonded. A method for the manufacture of a porous, thick-walled, integral, self- supporting, resin impregnated fibrous tubular filter element comprises the steps of forming a hollow inner shell of a first large pore size porous media; forming an outer shell of a second small pore size porous media, onto the inner shell, finer than the first porous media; impregnating the inner shell and the outer shell with a resin binder; and curing the resin to form an integral, self-supporting, resin impregnated and bonded fibrous, tubular filter element.

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