Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1986-09-19
1990-01-09
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
4251331, B29C 4516
Patent
active
048926990
ABSTRACT:
A method of forming multi-layer plastic articles by using a multi-cavity injection molding machine. A combined material stream is injected from a plurality of co-injection nozzles into associated injection cavities. Streams of polymeric materials which form the layers of the articles are directed separately into each of the nozzles and in each of the nozzles a combines stream is formed which is injected into the cavities. The individual flow of each of the material streams in the nozzle can be controlled in the nozzle.
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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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