Cross flow microfilter

Details Cross flow microfilter Cross flow microfilter

B - Operations, Transporting

01

D

182/15.1

B01D 61/14 (2006.01) B01D 39/14 (2006.01) B01D 67/00 (2006.01) B01D 69/02 (2006.01) B01D 71/02 (2006.01) B01J 20/28 (2006.01) C02F 1/00 (2006.01)

Patent

CA 1288057

ABSTRACT OF THE DISCLOSURE A cross flow microfilter comprises a filter housing having a flow chamber wherein a fluid is introduced on one side and a concentrate is removed on the opposite side a collection chamber from which a filtrate is removed, and at least one microporous membrane over whose one surface the fluid to be filtered flows in a parallel stream and whose other surface is oriented toward the collection chamber, the membrane having pores of a width between about 0.1 micron and 30 micron, the improvement wherein the pores of the membrane have slit-shaped cross-sections and given profiles, and are formed by a plurality of webs arranged in rows with pre- determined spacing and by terminating plates which cover the webs, and the webs are applied onto one of the two plates by X-ray lithographic means, X-ray depth lithographic- galvanoplastic means, or molding and galvanoplastic means.

526110

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