| 摘要 |
PURPOSE: To easily obtain a laminar molded product in a perfect two-layered state consisting of two layers equal in thickness by making the viscosities at a time of injection of different thermoplastic resins equal within a specific range. CONSTITUTION: An injection part 15 is equipped with an injection cylinder B17 and a hopper B19 and an injection cylinder A16 and the injection cylinder B17 are connected to a cavity 3 and arranged so as to provide a certain angle therebetween. The leading end parts of both of the injection cylinders A16, B17 are brought into contact with a mold 13 at the contact points 20, 32 of both injection cylinders A16, B17. The viscosities at a time of injection of different thermoplastic resins are made equal within a range of 150-1000Pa.S. By this constitution, the plasticized thermoplastic resins uniformly flow through the cavity and an obtained laminar molded product becomes a perfect two- layered state. |
