Injection molding die for producing molded product having appearance surface, injection molding method for producing molded product having appearance surface, and resin molded product molded by the injection molding method
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United States of America Patent
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Oct 30, 2012
Grant Date -
Jun 11, 2009
app pub date -
Dec 3, 2008
filing date -
Dec 5, 2007
priority date (Note) -
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Abstract
An injection molding die for producing a molded product having an appearance surface, an injection molding method for producing a molded product having an appearance surface, and a resin molded product molded by the injection molding method which is free from occurrence of appearance deficiency such as a flow mark or the like that is a drawback in appearance. A molten thermoplastic resin material is injected into a cavity defined by a molded product's appearance surface forming portion (4a) and a molded product's rear surface forming portion (6a) through one or more direct gates and one or more hot runners to fill the cavity with the molten resin material, thereby performing injection molding.
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