Screw for molding machine that prevents a wrapping phenomenon

Details Screw for molding machine that prevents a wrapping phenomenon Screw for molding machine that prevents a wrapping phenomenon

1996-07-18

1998-04-07

Cooley, Charles E.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 89, B29B 742

Patent

active

057355991

ABSTRACT:
A screw for a molding machine comprises a feed zone, a compression zone and a metering zone. The metering zone 12 is provided with a screw element having an intermediate mixing element 12b and a forward end mixing element 12a, and the upstream side of the intermediate mixing element is composed of a deep flight channel screw, and the downstream side of the intermediate mixing element is composed of a shallow flight channel screw.

REFERENCES:
patent: 2607077 (1952-08-01), Dulmage
patent: 3762693 (1973-10-01), DeBoo et al.
patent: 4181647 (1980-01-01), Beach
patent: 4652138 (1987-03-01), Inoue et al.
patent: 4729666 (1988-03-01), Takubo
patent: 5017015 (1991-05-01), Schlumpf et al.
patent: 5234656 (1993-08-01), Kniss
Partial Copy of Japanese Magazine "Extrusion", published Nov. 10, 1963 (first), Feb. 15, 1983 (sixth), pp. 147-155 and 169-172.

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