Apparatus for the preparation of thermoplastic materials

Details Apparatus for the preparation of thermoplastic materials Apparatus for the preparation of thermoplastic materials

1978-06-08

1979-12-04

Christian, Leonard D.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366318, 425207, B29B 110

Patent

active

041769678

ABSTRACT:
Apparatus for the preparation and extrusion of plastics material or rubber, comprising a planet rolling extruder and a feed portion disposed upstream thereof with a main shaft of the planet rolling extruder being surrounded by planet shafts and being driven jointly with a feed-screw of the feed portion, in which some of the planet shafts at their ends adjacent the feed-screw are reduced in section to form transfer shaft portions and thereby receiving chambers for material fed to the planet rolling extruder by the feed portion. The transfer shaft portions may be cylindrical with a diameter smaller than the diameter of the root circle of the planet shaft gearing or may have, adjacent the feed-screw, a diameter smaller than the root circle of the planet shaft gearing and increase in diameter in a direction away from the feed-screw until they achieve the full shaft outline.

REFERENCES:
patent: 2802238 (1957-08-01), Colombo
patent: 3305894 (1967-02-01), Boden et al.
patent: 3310837 (1967-03-01), Wittrock
patent: 3746319 (1973-07-01), Blach

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