| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a synthetic resin molded product capable of perfectly preventing a sink or the like from being caused even in a molded product having a region suddenly changed in shape. SOLUTION: A molten synthetic resin is charged in the cavity 1 of a mold and solidified to mold the molded product 3 made of the synthetic resin material having a thick-walled part 2. The mold is constituted so that the periphery of the cavity 1 forming the thick-walled part 2 is cooled by cooling water of which the temperature is lower than that of other region. COPYRIGHT: (C)2004,JPO |
