Filter for plastic extruding machine

Details Filter for plastic extruding machine Filter for plastic extruding machine

1975-03-17

1977-05-03

Granger, Theodore A.

Liquid purification or separation

With heater or heat exchanger

With mechanical agitator or movable separator

210184, 210236, 210387, 210447, 210DIG15, B01D 2902

Patent

active

040213463

ABSTRACT:
Apparatus for filtering heat-softened plastic material under pressure of extrusion comprising a substantially continuous screen with screw means for positively moving the same past the filtering area, said screw means being located in a passage open to the fluid plastic material, with means to harden the plastic material in the passage into a nut in which the filter is embedded. The screw means also functions to prevent the solidified slug (nut) from escaping, preventing leakage.

REFERENCES:
patent: 3150222 (1976-08-01), Blaustein et al.
patent: 3356217 (1967-12-05), Emele
patent: 3471017 (1969-10-01), Kalman
patent: 3645399 (1972-02-01), Kalman
patent: 3804758 (1974-04-01), Cooper et al.
patent: 3817377 (1974-06-01), Piggott
patent: 3856680 (1974-12-01), Elmore
patent: 3876545 (1975-04-01), Norwood
patent: 3940335 (1976-02-01), Kalman

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