Injection molding manifold having a pair of cooling bores on opposite sides of the melt passage
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United States of America Patent
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-
Apr 16, 1991
Grant Date -
N/A
app pub date -
Mar 5, 1990
filing date -
Feb 27, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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