INJECTION MOLDED SUBSTRATE

摘要

PURPOSE:To obtain an injection molded substrate increased in peeling strength and bending strength to a great extent by a two-stage injection molding method. CONSTITUTION:The substrate consists of a first injection molded layer and a second injection molded layer having a thin wall thickness. Through holes 2 are provided in the first injection molded layer as a surface displacement part into which the second injection molded layer is to be intruded.