Blending and molding means

Details Blending and molding means Blending and molding means

1975-10-29

1976-11-02

Roberts, Edward L.

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

259 4AB, 259194, 425242R, B29F 302, B01F 506

Patent

active

039894347

ABSTRACT:
Mixing means in the form of a torpedo for an injection molding machine having a plurality of alternately isolated and intersecting flow paths for repeatedly dividing and recombining material flow streams to achieve uniform properties throughout the material. The paths are formed as right and left-hand helical channels on the circumference of the torpedo body, with the helixes of one hand having a pitch different from that of the other such that the flow paths intersect in a pattern which is bilaterally asymmetrical with respect to an axial net flow direction. The nonsymmetrical arrangement is formed to provide substantially greater mixing action than that obtainable with similar symmetrical arrangements.

REFERENCES:
patent: 2669750 (1954-02-01), Keeney
patent: 3130448 (1964-04-01), Tomlinson

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