公开(公告)号：US11642247B2

公开(公告)日：2023-05-09

申请号：US16342271

申请日：2017-11-01

Applicant: KURARAY CO., LTD.

Inventor： Yasuhiro Shirotani ,  Yohei Shimizu ,  Yasutomi Matsushima ,  Junichi Taniguchi

IPC: A61F13/02 ,  B32B3/30 ,  B32B3/26 ,  B32B5/02 ,  B32B27/12 ,  C09J201/00 ,  D04H3/16 ,  B32B27/40

CPC classification number: A61F13/0246 ,  A61F13/0276 ,  B32B27/12 ,  C09J201/00 ,  D04H3/16 ,  B32B27/40

Abstract: A pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer is provided. The pressure-sensitive adhesive layer includes crater portions, each crater portion being concavely formed on an adhesive surface of the pressure-sensitive adhesive layer. A surface of the crater portion has a plurality of through holes.