| 摘要 |
PURPOSE:To manufacture a rubber product having the given density as a molded product and high dimension accuracy by reducing the capacity volume of a primary cavity into which a rubber material before vulcanization is injected, and vulcanizing and curing the material in a secondary cavity. CONSTITUTION:A primary cavity C1 is formed by mold register, and a fluid material for rubber before vulcanization is injected from a gate 5 into the primary cavity C1. Then the gate 5 is blocked by an auxiliary component and a secondary cavity C2 for molding is formed. Simultaneously the total capacity volume of the primary cavity C1 into which the fluid material for rubber before vulcanization is reduced by the gate blocking action of the auxiliary component. Then the pressurized fluid material for rubber before vulcanization in the secondary cavity C2 is cured by vulcanization. |
