Porous filter media and membrane support means

Details Porous filter media and membrane support means Porous filter media and membrane support means

1986-04-14

1988-08-23

Fisher, Richard V.

Liquid purification or separation

Processes

Separating

210496, 210505, 210509, 2105101, 264257, 264324, 428171, 428288, 521 91, 521143, 55 97, 55524, 55526, 55527, B01D 3700, B01D 3920

Patent

active

047659157

ABSTRACT:
A method for filtering liquid or gaseous materials where the filtration is conducted with a porous filter media prepared from an aqueous wet-laid, lofted fiber-reinforced composite sheet, the composite sheet comprising a heat fusible polymer, reinforcing fibers and a binder. The random fiber composite sheet can be selectively lofted or recompressed to form filter media having variable porosity. Also, a membrane support means prepared by applying or treating the fiber-reinforced composite sheet with a discriminating membrane layer.

REFERENCES:
patent: 3526557 (1970-09-01), Taylor, Jr.
patent: 3607500 (1971-09-01), Field
patent: 4229397 (1980-10-01), Fukuta et al.
patent: 4399085 (1983-08-01), Belbin et al.
patent: 4418031 (1983-11-01), Doerer et al.
patent: 4426470 (1984-01-01), Wessling et al.
patent: 4431696 (1984-02-01), DiDrusco et al.
patent: 4550131 (1985-10-01), Yats
patent: 4643940 (1987-02-01), Shaw et al.
patent: 4670331 (1987-06-01), Radvan et al.

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