| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a steel spring for clipping a wash in a clothespin made of a resin material conventionally much used. SOLUTION: The clothespin 1 is made by integrally molding a resin material with a high spring property, and a wash clipping mouth 3 of the clothespin is opened. This comes from a problem on the manufacture of a mold, and is inevitable in the molding of the object with the resin. A pressing process by using a heated mold is applied to shape the clothespin 2 into the encircled part B of the clothespin 2 with a nearly flat form, not into the encircled part A with a reverse-V shape. The opening of the mouth 3 is closed to generate a spring force enough to obtain a function as the conventional clothespin. COPYRIGHT: (C)2006,JPO&NCIPI
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