Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Patent
1989-09-08
1991-07-23
Spear, Frank
Liquid purification or separation
Filter
Supported, shaped or superimposed formed mediums
210507, B01D 6904
Patent
active
050341294
ABSTRACT:
The invention relates to a membrane assembly, provided with a carrier which carries a layer of a macromolecular substance with membrane action, said carrier being a composite carrier comprising on the one side a layer (2) having an open, cohesive structure, whereby layer (6) of the macromolecular substance extends into layer (2), and on the other side a supporting layer (3) on the side turned away from layer (6) having membrane action.
The carrier comprises, preferably, completely or partially a knitted or woven textile product. The supporting layer (3) is advantageously a plastic non-woven. The macromolecular substance is expediently a polymer, said substance taking care for the connection of the supporting layer (3) to the remaining parts of the composite carrier.
A device for the production of the present membrane assembly is also described. Said device comprises carrier stock means (13), carrier feed means, application means (16, 19) for the application of a liquid solution of a macromolecular membrane-forming material to the composite carrier (2, 3), carrier positioning means (14a, 14b), carrier support means (15) and membrane assembly discharge means (18). The carrier support means support the carrier in such a way that the solution of a macromolecular membrane-forming material can be brought on the carrier as a homogeneous layer.
REFERENCES:
patent: 3556305 (1971-01-01), Shorr
patent: 3563889 (1971-02-01), Cooper et al.
patent: 3850203 (1974-11-01), Shobert
patent: 3993566 (1976-11-01), Goldberg et al.
patent: 4134742 (1979-01-01), Schell
patent: 4214994 (1980-07-01), Kitano et al.
patent: 4755299 (1988-07-01), Bruschke
Meller Michael N.
Spear Frank
Stork Friesland B.V.
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