| abstract |
(57) [Summary] [Purpose] A molded product having a uniform cell diameter, capable of being molded with a remarkably low steam pressure, and having a good surface appearance and excellent energy absorption characteristics. Provided is a polypropylene resin foamed particle that can be produced. [Structure] A polypropylene-based resin expanded particle having a base resin of an isotactic polypropylene-based resin polymerized using a metallocene-based polymerization catalyst. |