Devolatilizing mixing extruder

Details Devolatilizing mixing extruder Devolatilizing mixing extruder

1983-04-29

1985-01-01

Coe, Philip R.

Agitating

Rubber or heavy plastic working

With specified vent means

159 22, 366 90, 366305, 366307, 425203, 425812, B29B 106

Patent

active

044914172

ABSTRACT:
An extruder including a devolatilizing section having helical channels formed in the barrel and having a cylindrical rotor closing the inner sides of the channels. Material is fed onto the rotor surface which rotates and forms the material into one or more rolling banks engaging only the upstream flank of the channels and the rotor surface. Helical vent slots pass through the barrel into each channel at the downstream flanks not occupied by the rolling bank.

REFERENCES:
patent: 2488189 (1949-11-01), Hanson
patent: 2693348 (1954-11-01), Ellermann
patent: 2744287 (1956-05-01), Parshall et al.
patent: 3031030 (1962-04-01), Rodenacker
patent: 3475787 (1969-11-01), Heston
patent: 3790328 (1974-02-01), Maxwell
patent: 3863905 (1975-02-01), Maxwell
patent: 3992500 (1976-11-01), Kruder et al.
patent: 4411532 (1983-10-01), Valsamis et al.

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