Fluid-impermeable areas on porous membrane filters and their app

Details Fluid-impermeable areas on porous membrane filters and their app Fluid-impermeable areas on porous membrane filters and their app

1989-01-31

1990-11-13

Spear, Frank

Liquid purification or separation

Casing divided by membrane into sections having inlet

Membrane secured with adhesive of specified composition

210450, B01D 6902

Patent

active

049699970

ABSTRACT:
The invention relates to porous membrane filters, specifically mirco- and ultraporous membrane filters, which have fluid-impermeable areas as a result of a change of their structure on one side of the membrane to a film-like state (film-formation). These filters are, for example, very suitable for an assembly in filter cartridges according to the pouring method, because they still have on the side opposite to the filmed-up side a porous structure, which offers an ideal anchoring possibility for penetrating liquid resin.

REFERENCES:
patent: 3401798 (1968-09-01), Nyrop
patent: 3464562 (1969-09-01), Meyers et al.
patent: 3494470 (1970-02-01), Banfield

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