Screw for double-shaft extruding device and double-shaft extrudi

Details Screw for double-shaft extruding device and double-shaft extrudi Screw for double-shaft extruding device and double-shaft extrudi

1993-10-26

1995-11-07

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 88, 366 89, B29B 106

Patent

active

054642825

ABSTRACT:
A screw for a double-shaft extruding device having a shaft and a spiral flight provided at an outer periphery of the shaft. A height of the flight from an axis of the shaft is substantially constant. An angle of torsion of a spiral of the flight becomes smaller toward a shaft distal end. A cross-sectional area of extrusion formed by the shaft and the flight continuously increases from the shaft distal end to a shaft proximal end. Material can be smoothly discharged and completely extruded.

REFERENCES:
patent: 2693617 (1954-11-01), Weitzel
patent: 3901486 (1975-08-01), Matsui

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