Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common...
Patent
1990-08-03
1991-08-06
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
425145, B29C 4503
Patent
active
050372858
ABSTRACT:
Multi-co-injection nozzle injection molding and injection blow-molding apparatus for injection molding and injection blow-molding a multi-layer plastics article, parison or container, including 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, and means for moving the materials streams along their respective channels to their respective nozzles for injection into associated injection mold cavities. The channels preferably provide substantially the same material flow for streams of the same material channeled to the nozzles. Preferably, the nozzles have an axial central channel and a plurality of flow stream passageways with orifices in communication with the central channel, and valve means cooperatively associated with and operative within each co-injection nozzle for there preventing and allowing the flow of respective materials streams from the 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
Durkin II Jeremiah F.
Woo Jay H.
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