公开(公告)号：US20220033605A1

公开(公告)日：2022-02-03

申请号：US17277624

申请日：2019-09-25

Applicant: SEKISUI PLASTICS CO., LTD.

Inventor： Osamu KATO

IPC: C08J9/12 ,  B29C44/02 ,  B29C44/50 ,  B29C44/34 ,  B29C51/00 ,  B29C51/10 ,  B65D1/34 ,  B32B5/20 ,  C08L67/02

Abstract: A thermoplastic polyester resin foam sheet includes a foam layer containing a thermoplastic polyester resin, in which a number average molecular weight Mn of the thermoplastic polyester resin is 9,000 to 26,000, a Z-average molecular weight Mz is 240,000 to 710,000, and a content of acetaldehyde in the foam layer is 25 ppm by mass or less.