| 摘要 |
PROBLEM TO BE SOLVED: To provide a hollow product-molding tool not to generate a useless thick part. SOLUTION: Resin material in a molten fluid state is introduced into a cavity 1a in a tool from a resin gate 2, pressurized gas is injected into the resin material from a gas injection hole 3, and the resin material is made thin while the resin material is being pressed against an inner surface of the tool by gas pressure. A movable core 6 is arranged at a tip part of the resin flowing in the cavity 1a, and the movable core 6 is connected to a constant load generator 8 via a joint shaft 7. |
