Injection molding manifold having a pair of cooling bores on opp

Details Injection molding manifold having a pair of cooling bores on opp Injection molding manifold having a pair of cooling bores on opp

1990-03-05

1991-04-16

Heitbrink, Timothy

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

26432814, 26432816, 425572, 425588, B29C 4573

Patent

active

050078216

ABSTRACT:
An injection molding heated manifold having a melt passage with a longitudinal portion to convey melt from a molding machine to a number of different nozzles. The steel manifold has a pair of cooling bores extending parallel to and equally spaced on opposite sides of the longitudinal portion of the melt channel. A cooling fluid, such as air, flows through the cooling bores to quickly cool the manifold after the system is shut down to minimize deterioration of the melt in the melt channel. The air flows helically around spiral vanes which are mounted in the cooling bores to avoid temperature stratification along the melt passage.

REFERENCES:
patent: 4439915 (1984-04-01), Gellert
patent: 4688622 (1987-08-01), Gellert
patent: 4902454 (1990-02-01), Steinbichler et al.

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