| 摘要 |
PROBLEM TO BE SOLVED: To reduce distortion and residual stress to be generated in an injection molded article. SOLUTION: The method includes a process of injecting molten resin 40 in the inmold space 30 between the molds 10, 20, a process of expanding the inmold space by a very small quantity ofΔt by allowing at least a part of the molds 10, 20 to be withdrawn from the inmold space 30 to the side of the molds 10, 20 in the cooling solidification period of resin 40 after the completion of an injection process, and a process of obtaining an injection molded article by maintaining resin 40 until it reaches cooling solidification in a state of the inmold space 30 expanded. |
