Filter paper for an edge-type filter

Details Filter paper for an edge-type filter Filter paper for an edge-type filter

1987-05-06

1989-03-07

Fisher, Richard V.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210504, 210508, B01D 2504

Patent

active

048103802

ABSTRACT:
A flat annular disc filter paper has a plurality of randomly oriented fibers at its surface. The paper is impregnated with a phenolic resin so as to resist compression of the disc and swelling of the paper. The filter paper is made by soaking the paper in the resin, heating the paper and resin so as to burn and melt the resin into close contact with the paper and rolling the filter paper at a temperature above ambient temperature.

REFERENCES:
patent: 2354380 (1944-07-01), Kasten
patent: 2375246 (1945-05-01), Kasten
patent: 2568144 (1951-09-01), Cremer et al.
patent: 2654440 (1953-10-01), Robinson
patent: 2773602 (1956-12-01), Sylvester
patent: 3294582 (1966-12-01), Suchy
patent: 4112188 (1978-09-01), Dahms
patent: 4157937 (1979-06-01), Ingram
patent: 4161422 (1979-07-01), Lawson et al.
patent: 4360433 (1982-11-01), Walker et al.
patent: 4472229 (1984-09-01), Martin

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