Patent ID: 11965084

Abstract:
A method for producing a polypropylene-based resin foamed molded article by blow molding a foamed parison formed of a base resin, in which: the base resin contains, in specific mixing proportions, a branched polypropylene-based resin (A), a linear polypropylene-based resin (B) and a recovered raw material (C) that is recovered in the course of production of the polypropylene-based resin foamed molded article. Each of the resin (A), resin (B) and the recovered raw material (C), has a specific range of a melt tension and a melt flow rate. A difference in melting point between the resin (A) and resin (B) is within a specific range. A difference in crystallization temperature between the resin (A) and resin (B) is within a specific range.