SOFT RESIN MATERIAL FOR MULTICOLOR INJECTION MOLDING IMPROVING ADHESIVENESS ON INTERFACE BETWEEN RIGID RESIN MATERIAL AND SOFT RESIN MATERIAL

摘要

PROBLEM TO BE SOLVED: To improve a adhesiveness at the interface between two materials in a multicolor injection molding of a material comprising a polyolefinic based rigid resin and an elastomer soft resin. SOLUTION: The adhesiveness at the interface between two materials is improved by giving a high compatibility to a PP in the polyolefinic rigid resin and an EP rubber component by saturating a double bond of at least 60 % in a conjugated diene part in an SEBS to be used as the elastomer soft resin. COPYRIGHT: (C)2004,JPO&NCIPI