公开(公告)号：US20240076464A1

公开(公告)日：2024-03-07

申请号：US18549026

申请日：2022-03-03

Applicant: JSP CORPORATION

Inventor： TATSUYA HAYASHI ,  AKINOBU HIRA

IPC: C08J9/18 ,  B29C44/34

CPC classification number: C08J9/18 ,  B29C44/3461 ,  B29K2023/0625

Abstract: Polyethylene resin foamed particles according to the present invention are obtained by using, as a base material resin, a non-crosslinked linear low density polyethylene. The linear low density polyethylene is a copolymer of ethylene and an α-olefin having 8 carbon atoms, and has a melt flow rate and a density in specified ranges. The foamed particle has an average foam size within a specified range, and has a crystal structure that causes an intrinsic peak and a high temperature peak to appear in the first round of a DSC curve obtained under a specific condition. The total fusion heat quantity (ΔH1) determined from the sum total of a fusion heat quantity (ΔHi) of the intrinsic peak and the fusion heat quantity (ΔHh) of the high temperature peak is within a specified range.