| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold which does not require a complicated driving source such as a hydraulic mechanism, which prevents the formation of a sink mark appearing on the appearance surface of a thick-walled section of a molded article, which does not cause unevenness in transfer or unevenness in gloss, and which can mold a rib or a boss with high dimensional precision, and to provide its molding method. SOLUTION: Until the initial stage of the start of filling, a partial compressing pin is precedently pressurized and advanced up to a cavity surface by an urging member. Resin pressure during the filling makes the partial compressing pin recede, and thus, a compression boss is formed. After the completion of the filling, the compression boss is compressed by the partial compressing pin. COPYRIGHT: (C)2008,JPO&INPIT |
