Preheating and feeding apparatus for an extruder

Details Preheating and feeding apparatus for an extruder Preheating and feeding apparatus for an extruder

1988-10-12

1990-04-03

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Plural means being diverse, or parallel and intermeshing or...

26421123, 366147, 425205, 425208, 4253781, B29C 4740

Patent

active

049136410

ABSTRACT:
A preheater and feeder for thermoplastifiable material supplied to an extruder for synthetic resin has the counterrotating worms in a heated housing delivering the material at a rate determined by the worm speeds. The worms are hollow and the major portion of the heat, apart from friction heat, contributed to the material is delivered by passing a heating fluid through the hollow worms.

REFERENCES:
patent: 2543307 (1951-02-01), Swallow et al.
patent: 3310836 (1967-03-01), Nichols
patent: 3884607 (1975-05-01), Gerhards
patent: 4067553 (1978-01-01), Yamaoka
patent: 4082488 (1978-04-01), Brinkschroder et al.
patent: 4416543 (1983-11-01), Brinkmann
patent: 4501498 (1985-02-01), McKelvey
patent: 4802140 (1989-01-01), Dowling

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