| 摘要 |
PROBLEM TO BE SOLVED: To provide a molding method and molding apparatus of two-color molding formed by demarcating a cavity by raising or lowering a partition plate in the cavity, or communicating the demarcated cavities with each other, and by filling respective demarcated cavities with molten resins of different colors by injection, simplified in the structure of molds and evenly controlled in the thicknesses of a general part and a sloped part. SOLUTION: The partition plate 70 demarcating the cavity C between upper and lower molding molds 50, 60 is supported on an expanding/contracting tube 80 contained in the lower molding mold 60. When the expanding/contracting tube 80 is expanded, the partition plate 70 is raised to abut on a mold face of the upper molding mold 50, and when the expanding/contracting tube 80 is contracted, the partition plate 70 is lowered to communicate the cavities with each other. Thus, the structure is simplified compared with a conventional one, and the thicknesses of the general part 10a and sloped part 10b are evenly controlled by dividing the partition plate 70 and expanding/contracting tube 80 into the general part 10a and sloped part 10b. COPYRIGHT: (C)2009,JPO&INPIT
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