公开(公告)号：US20240309245A1

公开(公告)日：2024-09-19

申请号：US18572332

申请日：2022-06-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guanqiao LI ,  Tomoaki Uchiya

IPC: C09J7/35 ,  C09J163/00

CPC classification number: C09J7/35 ,  C09J163/00 ,  C09J2301/1242 ,  C09J2301/304 ,  C09J2301/312 ,  C09J2301/50 ,  C09J2400/24 ,  C09J2463/00 ,  C09J2467/006

Abstract: An adhesive sheet can ensure favorable ease of insertion even when inserted and used into a narrow space, and can also favorably exhibit various characteristics during or after heating. An adhesive sheet includes a first adhesive layer formed of an adhesive composition containing an epoxy resin having a softening point of 50° C. or higher and a thermal curing agent; and a second adhesive layer that has tackiness and is foamed and cured by heat. An outermost layer of the adhesive sheet is formed of the first adhesive layer, and the adhesive sheet has a plurality of convex structures on a surface on a side of the outermost layer.