Plastics extruder

Details Plastics extruder Plastics extruder

1982-11-09

1985-01-01

Simone, Timothy F.

Agitating

Rubber or heavy plastic working

With specified feed means

366 79, 366182, 425208, 425209, B28C 704

Patent

active

044914180

ABSTRACT:
The hopper of a screw communicates with a feed chamber situated upstream from the extruder cylinder. The substantially rectangular feed chamber is large enough so that the behavior of a mass of plastic material in its initial state, i.e., in the form of powder or pellets, is affected neither by the side-walls nor by the upper wall nor by the removable bottom of the chamber. Thus, in the case of pellets, the distance between any of those walls and the apex of the screw thread is appreciably greater than the average diameter of the pellets.

REFERENCES:
patent: 1326375 (1919-12-01), Spencer
patent: 3822737 (1974-07-01), Edwards
patent: 3901483 (1975-08-01), Lasar
patent: 4205919 (1980-06-01), Attwell
patent: 4334784 (1982-06-01), Engels

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