| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a thick-walled molded product whose defective appearance is significantly reduced. SOLUTION: An injection molding die has a die cavity 2 formed of a cavity face 21 and a cavity face 22 positioned face to face with the cavity face 21 and a resin filling aperture 1 opened in part of the cavity face 21. In the part, opposed to the resin filling aperture 1, of the cavity face 22, a forwardly/ backwardly movable part 5 is provided in the die cavity 2. In addition, the movable part 5 is moved forward to the interior of the die cavity 2 before starting the resin filling operation, and moved backward in accordance with the resin filling progress. COPYRIGHT: (C)2004,JPO
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