Dewatering of plastic materials with controlled gaseous injectio

Details Dewatering of plastic materials with controlled gaseous injectio Dewatering of plastic materials with controlled gaseous injectio

1976-01-22

1980-01-22

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 50, 264142, 425146, 425817C, B29D 2706, G01L 100

Patent

active

041850572

ABSTRACT:
Plastic materials are dewatered in an extruder by applying heat and pressure and venting out vaporized water; before the plastic is extruded through the die orifice a gas is injected under high pressure into the plastic and this causes gas explosions when the plastic is released through the die orifices. The particles produced have micropores which provide improved workability, and form bales of controllable density.

REFERENCES:
patent: 2928130 (1960-03-01), Gray
patent: 3062759 (1962-11-01), Bingham et al.
patent: 3070836 (1963-01-01), De Haven et al.
patent: 3222797 (1965-12-01), Zies
patent: 3499878 (1970-03-01), Wood
patent: 3583679 (1971-06-01), Godley
patent: 3673126 (1972-06-01), Carmody et al.
patent: 3755516 (1973-08-01), Bonikowski et al.
patent: 3806569 (1974-04-01), Gallard et al.
patent: 3843757 (1974-10-01), Ehrenfreund et al.
patent: 3981649 (1976-09-01), Shimano et al.

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