公开(公告)号：US20210309843A1

公开(公告)日：2021-10-07

申请号：US17274530

申请日：2018-09-21

Applicant: JSP CORPORATION

Inventor： Masahiro GOMIBUCHI ,  Jinichiro NORO

IPC: C08L23/14 ,  C08J9/12

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.