Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common...
Patent
1989-08-22
1990-08-07
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
425145, B29C 4503, B29C 4516, B29C 4522
Patent
active
049463659
ABSTRACT:
Multi-co-injection nozzle injection molding apparatus for an injection molding machine for injection molding a multi-layer plastics article or container, comprising a plurality of co-injection nozzles, means associated with the nozzles to channel each material stream which is to form a layer of the article separately to each nozzle, means for moving the materials streams along their respective channels to their respective nozzles and means for combining in each nozzle the streams moved thereto, to form combined streams in the nozzles for injection into associated injection mold cavities. Each of the channels preferably provide substantially the same material flow stream travel path for each material stream of the same material channeled to each nozzle. Each co-injection nozzle has an axial central channel and a plurality of flow stream passageways with orifices in communication with the central channel. Preferably, valve means are cooperatively associated with and operative within each co-injection nozzle for there preventing and allowing the flow of respective materials streams from the passageway orifices into the central channel.
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Kudert Frederick G.
Latreille Maurice G.
McHenry Robert J.
Nahill George F.
Pfutzenreuter, III Henry
American National Can Company
Audet Paul R.
Durkin II Jeremiah F.
Woo Jay H.
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