Filtering debris from molten plastic

Details Filtering debris from molten plastic Filtering debris from molten plastic

1994-10-05

1995-11-07

Kim, John

Liquid purification or separation

Filter

Within flow line or flow line connected close casing

210181, 210184, 210186, 210420, 210422, 210450, 210451, 210455, 425197, B01D 2905, B01D 3500, B01D 3518

Patent

active

054645379

ABSTRACT:
A filter for removing debris from a flow of molten plastic includes a cartridge containing a screen and a holder which seats one face of the cartridge. The flow of molten plastic is directed at an acute angle through the screen producing a filtered plastic flow through a downstream face of the screen and a flow of debris separated from the filter plastic along the upstream screen face. A compartment extends along the upstream screen face and accumulates the separated debris. A passage in the holder communicates with the debris-accumulating compartment and discharges the accumulating debris. A cooling mechanism regulates the rate at which debris is discharged.

REFERENCES:
patent: 3817377 (1974-06-01), Piggot
patent: 4453905 (1984-06-01), Bennett
patent: 4486304 (1984-12-01), Neuman et al.

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