| 摘要 |
PURPOSE:To obtain a molded body excellent in touching property and aesthetic property without costing much by a method wherein synthetic resins consisting of different materials from one another are injected respectively in cavities,which are formed by retreating the first and the second sliding cores in due order, for molding. CONSTITUTION:First, the first synthetic resin P1 is injected from the first sprue G1 in a frame-shaped cavity C1 under the state that the first and the second sliding cores 4 and 5 are located at their advanced positions. Secondly, the second synthetic resin P2, which is different from the first synthetic resin P1 or the compatibility or fusing property with the first synthetic resin P1 is low, is injected from the second sprue G2 in a top plate C2 under the state that the first sliding core 4 is retreated to its first stage retreated position. Thirdly, the synthetic resin P3, which is same as or different from the first synthetic resin P1 and which is compatible or fusible with the first synthetic resin P1, is injected in the second frame-shaped cavity C3 under the state that the first sliding core 4 is further located at its second stage retreated position and at the same time the second sliding core 5 is located at its retreated position. By removing from a mold after cooling down, a cover body 6 with a desired shape is formed. |
