| 摘要 |
PURPOSE:To bring molding dies at low cost into contact by large force without using a clamping device by bringing the molding dies molded from master dies abutted against each other through a viscous article surrounding a communicating hole and demarcating a product cavity. CONSTITUTION:A molding film 10 is sucked to the surface of a master die for a die model or a gypsum die and a die holding member 61 is abutted against each other, the inside of a space constituted by these film 10 and member 61 and a diaphragm 83 is filled with a granular substance 14, a shielding film 13 is applied, and the inside of the space incorporating the granular substance 14 is sucked and decompressed. The granular substance 14 is solidified and the master die is separated, thus obtaining one of dies for molding. An area 73 surrounding a die section 86 is formed by a viscous substance 68, vent holes 69, 69 are bored, and the molding die is mold-registered to a separately molded molding die and both are brought into contact mutually. Force in magnitude obtained by multiplying the longitudinal sectional area of a hollow demarcated by both dies by atmospheric pressure also works to the die holding member 61, and the die holding members 61, 61 are clamped. A liquefied cold-setting resin is injected through a resin injection port 65, thus acquiring a desired product.
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