Extrusion device

Details Extrusion device Extrusion device

1974-10-01

1976-03-02

Smith, Al Lawrence

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

B01F 702

Patent

active

039415350

ABSTRACT:
The present invention relates to an improvement in screw extrusion apparatus for handling resinous thermoplastic and similar materials, which has a portion of the length of the screw supplied with protuberances rising from the root of the screw and terminating in an outer surface spaced from the extruder bore giving intensive high shear treatment to the process material in the space therebetween with a dynamic volumetric treating capacity in this space greater than one and one half times the total throughput rate and between these protuberances passageways for separating and recombining of material to effect low shear high volume mixing.

REFERENCES:
patent: 2680879 (1954-06-01), Schnuck et al.
patent: 3143768 (1964-08-01), Scherping
patent: 3524222 (1970-08-01), Gregory et al.
patent: 3652064 (1972-03-01), Lehnen et al.
patent: 3661363 (1972-05-01), Aletti

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