Heating and stratification device for an injection molding machi

Details Heating and stratification device for an injection molding machi Heating and stratification device for an injection molding machi

1975-11-28

1977-04-05

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Dough divider type including trap chamber

Rotating trap chamber pickup

425208, 425251, 259185, 222409, 222412, B29F 308

Patent

active

040159167

ABSTRACT:
An injection molding machine having a barrel and a reciprocating and rotatable screw disposed therein. A combination heat transfer and stratification device is disposed between the screw and the outlet of the barrel. The device includes a generally tubular portion having radially inwardly extending ribs. The ribs are in contact with the inner wall of the barrel. Heating means supply heat to the portion of the barrel containing the device and heat is transmitted through the rib portions.

REFERENCES:
patent: 2669750 (1954-02-01), Keeney
patent: 2740160 (1956-04-01), McKee
patent: 2919469 (1960-01-01), Wheeler
patent: 3130452 (1964-04-01), Heumann
patent: 3156013 (1964-11-01), Elphee
patent: 3945786 (1976-03-01), Bishop

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