| 摘要 |
PROBLEM TO BE SOLVED: To provide a sandwich molding method which can secure a sufficient thickness of a core layer while having a wide selective width for the class of a resin even for a sandwich molded product of a thin wall thickness, and can sufficiently secure the wall thickness of the skin layer corresponding to a gate front surface part of the cavity surface of the molded product. SOLUTION: The sandwich molding method in which a resin becoming a skin layer through the same sprue and a resin becoming a core layer are continuously injected into the cavity, is characterized in that a resin cooling speed of a gate front surface part of the cavity surface is made quicker than the resin cooling speed of a peripheral part of the gate front surface part. COPYRIGHT: (C)2004,JPO |
