公开(公告)号：US20230167260A1

公开(公告)日：2023-06-01

申请号：US17995082

申请日：2021-03-26

申请人： JSP Corporation

发明人： Keiichi HASHIMOTO ,  Katsunori HISAMATSU ,  Shogo IWASAKI

IPC分类号： C08J9/228 ,  C08J9/00 ,  C08J9/224 ,  B60N2/70

CPC分类号： C08J9/228 ,  C08J9/0061 ,  C08J9/224 ,  B60N2/70 ,  C08J2323/12 ,  C08J2423/06 ,  C08J2203/22

摘要： A vehicle seat core material includes a molded article that includes thermoplastic resin expanded beads. The molded article has a substantially rectangular shape in a top view, and has a front side and a rear side opposite the front side. The molded article has an average density (Z) of 20 kg/m3 to 50 kg/m3. The molded article includes, on the rear side of the molded article, a rear thin portion having a thickness of 10 mm to 40 mm, the thickness of the rear thin portion being smaller than an average thickness of the molded article. A ratio (Y/Z) of a density (Y) of the rear thin portion to the average density (Z) of the molded article is 1.05 to 3. The rear thin portion of the molded article has a fusion rate of 70% or more.