Multi-shaft screw extruder

Details Multi-shaft screw extruder Multi-shaft screw extruder

1977-03-02

1979-07-31

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

B29B 110

Patent

active

041628543

ABSTRACT:
The screw extruder is provided with screw shafts arranged so as to intermesh in pairs and rotate in pairs in the same sense, each screw shaft of a pair containing at least one double or triple threaded pressure build-up section corresponding to that of the other screw shaft. At least part of the pressure build-up sections have at least a ratio of screw pitch t to housing inner diameter d within the range:

REFERENCES:
patent: 2508495 (1950-05-01), Consalvo
patent: 3254367 (1966-06-01), Erdmenger
patent: 4040607 (1977-08-01), Ullrich

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