| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing an integrally molded hinge capable of manufacturing it efficiently and at low cost, forming a hinge part without making resin composition of work material as thermoplastic resin formed in a sheet uneven, and providing favorable appearance. SOLUTION: This method of manufacturing is provided with a preheating process of heating a hinge forming part of work material comprising thermoplastic resin to a molding condition to be softened, and a hinge processing process of pressing a hinge molding die heated to a roughly similar temperature to temperature of the resin heated in the preheating process to an inwardly bent side surface of the hinge forming part softened in the preheating process for recessing the surface only to form a grooved thin hinge.
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