Screw extruder

Details Screw extruder Screw extruder

1985-01-09

1985-09-03

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

With specified vent means

366 80, 366 90, 366324, B01F 708

Patent

active

045389179

ABSTRACT:
A screw extruder for mixing, homogenizing, and degassing highly viscous rubber mixtures and similarly acting thermoplastics. The extruder has mixing pins associated with the housing in the mixing and homogenizing zone, and degassing pins associated with the housing in the degassing zone. The degassing pins have passages or channels through which gases and vapors are withdrawn. The retaining or damming structure at the entrance to the degassing zone can also be formed of pins associated with the housing. The conveyed material is mechanically and thermally satisfactorily made uniform by the inventive pin arrangement without material shearing forces, and can also be effectively and favorably degassed. High flow-through rates of the material can be achieved with high product quality.

REFERENCES:
patent: 3193877 (1965-07-01), Edwards
patent: 3367635 (1968-02-01), Gresch
patent: 3870285 (1975-03-01), Bausch
patent: 4107260 (1978-08-01), Dougherty
patent: 4199263 (1980-04-01), Menges et al.

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