Filter paper and method of making same

Details Filter paper and method of making same Filter paper and method of making same

1978-05-10

1979-07-17

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

With coating after drying

162136, 162165, 162184, 427288, 427391, 428195, 428198, 428211, D21F 1100

Patent

active

041614224

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: 3120449 (1964-02-01), Griswold
patent: 3158532 (1964-11-01), Pall et al.
patent: 3520416 (1970-07-01), Keedwell
patent: 3647603 (1972-03-01), Esemplare et al.
patent: 3778341 (1973-12-01), Plummer et al.
patent: 3798120 (1974-03-01), Enloe et al.

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