GIESSVERFAHREN ZUR HERSTELLUNG EINES GIESSLINGS AUS KUNSTSTOFF.

摘要

A molding method is provided for the manufacture of a resin molded part having one or more flexibly movable, push-button-shaped thicker projections (11) formed integrally with a base (13) through the intermediary of thinner wall portions (12) continued from the peripheral edges of the projections. A thermoplastic elastomer is used as a molding material, and the thicker projections, the thinner wall portions, and the base are integrally molded by supplying a mass of the molding material into the mold (1, 2) through gates (5) provided adjacent the centers of portions corresponding to each of the projections. The method requires no vulcanization and permits efficient production. Furthermore, it allows well balanced flow of the nolding material and makes it possible to avoid producing burrs and sink marks.