Extruder for preplasticization of thermoset molding materials

Details Extruder for preplasticization of thermoset molding materials Extruder for preplasticization of thermoset molding materials

1979-06-11

1981-10-27

Coe, Philip R.

Agitating

Rubber or heavy plastic working

With specified discharge means

366 79, 366189, 366194, 425558, B29B 106, B29B 504

Patent

active

042970369

ABSTRACT:
An extruder for the preplasticization of thermoset molding resins is disclosed. The extrusion machine includes a screw that rotates in a heated cylinder and compresses the fed-in pulverulent thermoset resinous material against a predetermined ramming pressure until it is plasticized. At the discharge end of the screw cylinder a receiving cylinder is disposed which has a hydraulic discharge piston which continuously retracts when an adjustable pressure head has been exceeded.

REFERENCES:
patent: 3253303 (1966-05-01), Bradt
patent: 3342913 (1967-09-01), Engel
patent: 4124308 (1978-11-01), Sokolow
patent: 4134687 (1979-01-01), Eckardt
patent: 4146067 (1979-03-01), Ziegler

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