Microfilter foil and method of producing same

Details Microfilter foil and method of producing same Microfilter foil and method of producing same

1987-07-15

1989-01-31

Sever, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

204 11, 204 15, 21050025, 21050027, 264 42, 264DIG48, 264DIG70, B01D 1304, B01D 2904

Patent

active

048013790

ABSTRACT:
The microfilter foil is made of an inorganic substance such as metal with opened pores. Each pore is formed with a channel which increases in cross-section from the crest so as to obviate clogging. The foil is produced by exposure of a photosensitive layer of paint or lacquer with the use of an interference pattern produced by monochromatic and coherent light. A skin of inorganic material is produced on the photosensitive layer and portions of the skin are thereafter removed from the coated teeth in order to produce the pores in the subsequently formed foil.

REFERENCES:
patent: 2226381 (1940-12-01), Norris
patent: 2230868 (1941-02-01), Kuhlman
patent: 3695927 (1972-10-01), Futterer
patent: 4575406 (1986-03-01), Slafer

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