Filter for high viscosity liquids

Details Filter for high viscosity liquids Filter for high viscosity liquids

1980-04-16

1981-04-07

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With upstream screen or perforated plate for straining,...

264176F, 425198, B29F 306

Patent

active

042603501

ABSTRACT:
An improved replaceable filtration unit for high viscosity fluids, of the self sealing semi-disposable type and having inert granular material supported by a screen within a housing, wherein the improvement comprises having the screen's rim swaged into the housing, preferably with an interference fit within the range 0.005 to 0.015 inches. The invention improves the performance of packs used to filter and extrude molten polymer into shaped articles.

REFERENCES:
patent: 2038348 (1936-04-01), Cusin
patent: 2266368 (1941-12-01), Hull et al.
patent: 2607954 (1952-08-01), Schneider et al.
patent: 2732585 (1956-01-01), Wicker
patent: 3307216 (1967-03-01), Dunn et al.
patent: 3469279 (1969-09-01), Hudgell
patent: 3475527 (1969-10-01), Chapman
patent: 3724064 (1973-04-01), Mott
patent: 3771664 (1973-11-01), Schriak et al.
patent: 3797982 (1974-03-01), Borrello

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