Injection molding method, molded-article producing method, and injection molding apparatus
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United States of America Patent
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Jun 3, 2014
Grant Date -
Nov 15, 2012
app pub date -
Mar 18, 2010
filing date -
Mar 18, 2010
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Abstract
The injection molding method for injecting a resin into a cavity formed within a mold is provided with a heating step in which the temperature of a cavity surface forming the cavity of the mold is heated to a temperature equal to or higher than a heat distortion temperature of the resin and an injection step in which after the heating step, during a decrease in temperature of the cavity surface of the mold, the resin is injected into the cavity.
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