Device for degassing plastic materials

Details Device for degassing plastic materials Device for degassing plastic materials

1976-07-28

1977-11-08

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Including ventilating type hood or chamber encasing a...

159 2E, 366 84, 425203, 425204, 425376R, 425812, B29B 110

Patent

active

040573761

ABSTRACT:
A device for degassing plastic materials comprising an extruder including at least three parallel screws intermeshing in pairs, arranged in a casing which follows the periphery of the screws and arranged around a central stem, the surface of which also follows the periphery of the screws so that the screws are encased over a substantial part of their periphery. The casing is provided with a supply inlet, an end plate through which degassed material is extruded and a degassing outlet through which gases are withdrawn, the degassing outlet being upstream with respect to the supply inlet.

REFERENCES:
patent: 3268949 (1966-08-01), Schmidt et al.
patent: 3376603 (1968-04-01), Colombo
patent: 3442065 (1969-05-01), Foras
patent: 3642752 (1972-02-01), Sutter
patent: 4029300 (1977-06-01), Morishima et al.

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