| 摘要 |
PURPOSE:To enhance flatness by injection first resin out of a first injection gate into a first cavity, moving back a slide core in the state of pressing said resin with a press pin, injecting second resin out of a second injection gate into a second cavity and forming a main body section. CONSTITUTION:A moving mold 2 and a projected section 13 of a slide core 4 are faced to a fixed mold 1, and a press pin 12 is disposed at the bottom position of a first cavity 6. Transparent resin 9, for example, is injected from a first gate 8 into a first cavity 6 for molding, cooled and solidified. Then, the end surface of the projected section 13 of the slide core 4 is moved back to the same surface as the end surface forming a second cavity 3 of a movable mold 2, while the press pin 12 is held as it is, and black resin 5, for example, is injected from a second gate 7 for forming a main body section. The movable mold 2 is moved to the lower side after cooling and solidifying, and the molded product is released out of the mold by moving the press pin 12 upward. A two color molded product with good flatness and without warp is molded by said process. |
