Filter medium and method of making same

Details Filter medium and method of making same Filter medium and method of making same

1977-07-08

1978-10-10

Sever, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55524, 55528, 210504, 210505, 210508, B01D 2702, B01D 2704, B01D 3914

Patent

active

041195434

ABSTRACT:
A filter medium particularly adapted for use in an oil filter for an internal combustion engine having a water-laid web of fibers, at least 70% of which are cellulose, impregnated with resin in a pattern at its wire side to a depth of 15 to 45% of its total thickness, the pattern having zones free from resin amounting to 35 to 60% of the total area of the wire side, each zone having at least one dimension no greater than 4 mm.

REFERENCES:
patent: 2895868 (1959-07-01), Magill
patent: 3096230 (1963-07-01), Briggs
patent: 3116245 (1963-12-01), McNabb et al.
patent: 3158532 (1964-11-01), Pall et al.
patent: 3520416 (1970-07-01), Keedwell

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