Apparatus for injection moulding multi-layer articles
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United States of America Patent
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Aug 1, 2000
Issued Date -
N/A
app pub date -
Dec 23, 1998
filing date -
Apr 13, 1983
priority date (Note) -
Expired
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Abstract
An injection molding machine for simultaneously injection molding a plurality of articles each made of plural polymeric materials. The injection molding machine includes a source of a first polymeric material and a source of a second polymeric material. The injection molding machine also includes a plurality of co-injection nozzles, each of the nozzles has an associated injection cavity mold. Each of the nozzles also has a first flow channel for providing a stream of said first polymeric material to said mold and a second flow channel for providing a stream of said second polymeric material to said mold. The machine further includes a manifold for feeding the polymeric materials from their sources to each of the nozzles and each of the associated molds, such that each of the streams of the first polymeric materials flows from each nozzles into each associated mold simultaneously and each of the streams of the second polymeric materials flows from each nozzle into each associated mold simultaneously.
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