Extruder having degree-of-kneading adjusting device

Details Extruder having degree-of-kneading adjusting device Extruder having degree-of-kneading adjusting device

1990-10-31

1992-09-08

Hornsby, Harvey C.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 75, 366 81, 366 85, 366 88, B29B 748, B01F 708

Patent

active

051452510

ABSTRACT:
A resin extruder in which the degree-of-kneading of the resin can be effectively controlled. The invention can be applied to both a single-screw extruder and a twin-screw extruder. In either case, blocking walls are formed around a cylindrical portion of the screw or screws just upstream of the kneading section. A valve structure is provided in the walls to control the kneading of resin at the kneading section.

REFERENCES:
patent: 3008184 (1961-11-01), Fritsch
patent: 3198491 (1965-08-01), Loomans et al.
patent: 3280425 (1966-10-01), Beck et al.
patent: 3823921 (1974-07-01), Brennan, Jr. et al.
patent: 3870285 (1975-03-01), Bausch et al.
patent: 3883122 (1975-05-01), Werner
patent: 4103355 (1978-07-01), Weber
patent: 4136968 (1979-01-01), Todd
patent: 4462691 (1984-07-01), Boguslawski

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