Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – Including means to prepare parison
Patent
1993-04-26
1994-06-28
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
Including means to prepare parison
2643288, 26432812, 26432813, 264572, 425546, 425572, 425573, 425588, B29C 4517
Patent
active
053241894
ABSTRACT:
Apparatus for injection molding a plastic article having a hollow rib portion utilizing a spill cavity. A process includes the steps of sequentially injecting fluent plastic and gas into a mold cavity having a space defining at least one wall portion of the article and a channel defining a rib portion of the article. A quantity of fluent plastic is initially injected to substantially fill the mold cavity. A charge of pressurized gas is then injected into the channel of the mold cavity to displace a portion of the still fluent plastic into the spill cavity which is flow coupled to the channel. Preferably, the thickness of the rib portion in cross section is at least twice as large as the thickness of the wall portion in cross section along the entire length of the rib portion. Also, preferably, the channel is tapered along its length. The rib portion may be either internal or external to the article.
REFERENCES:
patent: 4101617 (1978-07-01), Friederich
patent: 4781554 (1988-11-01), Hendry
patent: 4855094 (1989-08-01), Hendry
patent: 5028377 (1991-07-01), Hendry
patent: 5044924 (1991-09-01), Loren
patent: 5069859 (1991-12-01), Loren
patent: 5090886 (1992-02-01), Jaroschek
patent: 5098637 (1992-03-01), Hendry
patent: 5204051 (1993-04-01), Jaroschek
Leyson Joseph
Melea Limited
Woo Jay H.
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