Screw extruder for continuously processing and degasing of elast

Details Screw extruder for continuously processing and degasing of elast Screw extruder for continuously processing and degasing of elast

1977-03-18

1978-08-15

Coe, Philip R.

Agitating

Rubber or heavy plastic working

With specified vent means

159 2E, 264102, 366 84, B29B 110

Patent

active

041077873

ABSTRACT:
A screw extruder for continuously processing and degasing elastomers and polymers having a viscosity of more than 1,000 poise comprising a casing with an input zone at one end and a discharge zone at the other, several degasing zones within the casing along the length thereof and a pressure zone upstream of each degasing zone. The inside wall portions juxtaposed to the degasing zones include spiral grooves having at the most the same depth as the flights of the extruder screws.

REFERENCES:
patent: 2639464 (1953-05-01), Magerkurth
patent: 2662243 (1953-12-01), Schnuck et al.
patent: 3170190 (1965-02-01), Fields
patent: 3764114 (1973-10-01), Ocker

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