| 摘要 |
PROBLEM TO BE SOLVED: To adjust the filling position of a core layer and also adjust the thickness of a skin layer with good accuracy by a simple technique. SOLUTION: In a resin molding method, molten resins 2 and 3 of different material quality are injected from a gate section 4 into a cavity 1, and a core layer 2 is formed of one resin 2, while a skin layer 3 coating the core layer 2 is formed of the other resin 3. Respective molten resins 2 and 3 are injected from the gate section 4 into the cavity 1 so that the core layer 2 is coated with the skin layer 3, and then the molten resin 3 forming the skin layer 3 or the molten resin 2 forming the core layer 2 is injected from the gate section 4 while discharging the molten resin 3 forming the skin layer 3 out of a discharge gate section 5 provided on the cavity 1 to adjust the filling position of the core layer 2 or the thickness of the skin layer 3. |
