Apparatus for injection molding multi-layer articles
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United States of America Patent
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-
Dec 25, 2001
Issued Date -
N/A
app pub date -
Mar 15, 2000
filing date -
Apr 13, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An injection nozzle device including multi-polymer injection nozzles comprising an assembly of shells, and having fixed, tapered passageways communicating with annular orifices close to a nozzle gate and to each other, and polymer flow balancing and directing means in the passageways in the form of concentric and eccentric chokes.
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