Dual worm extruder having wear resistant bore walls

Details Dual worm extruder having wear resistant bore walls Dual worm extruder having wear resistant bore walls

1981-03-12

1982-12-21

McCarthy, Edward J.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

100146, 418201, 425204, A21C 106, B30B 304

Patent

active

043646646

ABSTRACT:
A dual worm extruder includes a worm housing having a cavity and a wear resistant insert accommodated in the cavity. The insert has two parallel extruder bores defining, when viewed together in cross section, passages of circular areas having an overlap. The outer surface portions of the insert situated on opposite sides adjacent the overlap are peripherally concave, whereby the cross-sectional outline of the insert has the shape of an hourglass.

REFERENCES:
patent: 3078511 (1963-02-01), Street
patent: 3268949 (1966-08-01), Schmidt
patent: 3696736 (1972-10-01), Studu

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