Screw extrusion press and method with mixing rings having...

Details Screw extrusion press and method with mixing rings having... Screw extrusion press and method with mixing rings having...

2007-05-07

2009-02-17

Cooley, Charles E (Department: 1797)

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

Reexamination Certificate

active

07490974

ABSTRACT:
A screw extrusion press for processing thermoplastic and not reticulating polymers comprises a conveying screw (1) in a cylinder (2). The screw comprises a conveying zone (7) and a mixing zone with 10 mixing rings (3). These mixing rings comprise a passage hole (5) that extends from the bottom (10) of the screw to the vicinity of the cylinder wall (20) where it opens out into a shear gap (9).

REFERENCES:
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patent: 5234656 (1993-08-01), Kniss
patent: 5630968 (1997-05-01), Wang et al.
patent: 2007/0263479 (2007-11-01), Hennes
patent: 2 023 910 (1972-02-01), None
patent: 3245084 (1984-06-01), None
patent: 38 43 576 (1990-07-01), None
patent: 100 00 938 (2000-07-01), None

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