| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding machine for more than one layers capable of certainly coating a core layer resin with a skin layer resin and capable of partially forming only the necessary place of an injection-molded product into a structure of more than one layers. SOLUTION: The injection molding machine for more than one layers for molding the injection-molded product, wherein the core layer resin is coated with the skin layer resin, is constituted so as to respectively inject the core layer resin and the skin layer resin in the cavity part 11 formed in molds 8 and 9 under pressure from an injection unit 12 for a core layer and an injection unit 13 for a skin layer. This injection molding machine has a flow channel on-off means 22 for opening and closing the resin flow channel from the injection unit 12 for the core layer to the injection unit 13 for the skin layer, a teaching means 33 capable of setting the injection start timing of the core resin layer more than one times during the injection period of the skin layer and a control means 34 for changing over the on-off state of the on-off means 22 on the basis of the indication of the teaching means 33. |
