PERFORATION TREATMENT OF INTERIOR PART

摘要

PURPOSE: To provide a perforation treatment method enhancing the appearance of the peripheral edge of the attaching hole for attaching a separate part in an interior part for a car obtained by integrally molding a resin core material and a skin material. CONSTITUTION: An interior part molding process forming an attaching hole 21 having a predetermined dimension to a resin core material simultaneously with the integral molding of the resin core material 20 and a skin material 30 in a mold and the perforation process of the skin material 30 forming an attaching hole 31 slightly smaller than the attaching hole of the resin core material 20 including a shrink allowance 32 to the skin material 30 corresponding to the attaching hole 21 of the resin core material 20 after molding are provided.