| 摘要 |
PURPOSE:To easily mold a container having different colors by integral molding, by a method wherein a first synthetic resin is injected in a frame shaped cavity in such a state that a slide core is present at an advance position and, subsequently, a second synthetic resin is injected in at least one of a bottom plate cavity and a top plate cavity while a third synthetic resin is injected in the other cavity in such a state that the slide core is present at a retracted position. CONSTITUTION:After first and second slide cords 32, 33 are moved to advance positions, a first synthetic resin P1 is injected in a frame shaped cavity C1 from a first gate G1 and, subsequently, the slide cores 32, 33 are moved to retracted positions to inject a second synthetic resin P2, which is prepared by coloring the resin having compatibility with the first syntheric resin P1 with a different colorant, in a bottom plate cavity C2 from a second gate G2 and, in parallel to this, a second synthetic resin P3 having a color different from the colors of both first and second synthetic resins is injected in a top plate cavity C3 from a third gate G3 to mold a three-color synthetic resin container. |
