Injection molding nozzle with helical cooling conduit

Details Injection molding nozzle with helical cooling conduit Injection molding nozzle with helical cooling conduit

1994-07-18

1995-06-27

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

26432815, 425570, B29C 4520

Patent

active

054275199

ABSTRACT:
An injection molding nozzle for cold runner molding thermosetting molding material in a heated mold. A bore extends centrally through the nozzle to convey liquid molding material from a cooled distribution manifold to a gate leading to a cavity. An integral cooling fluid conduit has a helical portion extending concentrically around the molding material bore. Cooling fluid circulates from a radial inlet portion to a radial outlet portion of the cooling fluid conduit to cool the liquid molding material flowing through the central bore.

REFERENCES:
patent: 4403405 (1983-09-01), Gellert

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