| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection-molding method which can impart high appearance and high functional characteristics, by upgrading in-mold resin fluidity, especially thin-walled fluidity during injection molding, and to provide an injection-molded object obtained by the injection-molding method. SOLUTION: This injection-molding method includes a process (a) for pressurizing the interior of a mold cavity by carbon dioxide prior to injecting a resin; and a process (b) for unloading the molded object by lowering the temperature of the mold cavity surface to lower than the level at which the molded object is not thermally distorted, after injecting the resin, in such a state that the temperature of the mold cavity surface, is heated up to the level above the glass transition temperature of the resin. COPYRIGHT: (C)2010,JPO&INPIT
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