公开(公告)号：US11965084B2

公开(公告)日：2024-04-23

申请号：US17274530

申请日：2018-09-21

Applicant: JSP CORPORATION

Inventor： Masahiro Gomibuchi ,  Jinichiro Noro

IPC: C08L23/14 ,  C08J9/12

CPC classification number: C08L23/14 ,  C08J9/122 ,  C08J2323/14 ,  C08J2423/14 ,  C08L2205/03 ,  C08L2207/04 ,  C08L2207/20

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.