Sprue bushing for injection molding machine

Details Sprue bushing for injection molding machine Sprue bushing for injection molding machine

1979-10-12

1981-04-07

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Temperature control

425543, 425548, 425549, 425567, 425569, B29G 300

Patent

active

042603480

ABSTRACT:
A sprue bushing for an injection molding machine comprising a body surrounding a core. The core has a central passageway for flow of the plastic from the nozzle of the machine to the mold and has on its exterior surface longitudinal grooves. Assembly of the body and core forms fluid channels with the grooves. The temperature of the bushing is controlled by the flow of water through the channels.

REFERENCES:
patent: 2286501 (1942-06-01), Narten
patent: 2309943 (1943-02-01), Ernst
patent: 3591897 (1971-07-01), Perras
patent: 3661487 (1972-05-01), Susin
patent: 3797984 (1974-03-01), Yago
patent: 3819312 (1974-06-01), Arpajian
patent: 4120086 (1978-10-01), Crandell

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