Porous filter media and membrane support means

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

1988-05-19

1990-02-27

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210496, 2105101, 264 41, B01D 1300

Patent

active

049043854

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: 4666763 (1987-05-01), King et al.
patent: 4765915 (1988-08-01), Diehl

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