Title:
ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2023/171069
Kind Code:
A1
Abstract:
This adhesive sheet has a laminate in which a first adhesive layer and a second adhesive layer are laminated, wherein: when a surface on the first adhesive layer side among surfaces of the laminate is defined as the A surface, and a surface on the second adhesive layer side among the surfaces of the laminate is defined as the B surface, the A surface adhesive strength is greater than the B surface adhesive strength; and when a push-in depth at a point in time at which a push-in load becomes 5 N after continuously pushing in the A surface at a push-in speed of 0.01 mm/second is defined as the A surface push-in depth, and a push-in depth at a point in time at which a push-in load becomes 5 N after continuously pushing in the B surface at a push-in speed of 0.01 mm/second is defined as the B surface push-in depth, the A surface push-in ratio which is the A surface push-in depth relative to the thickness of the laminate, and the B surface push-in ratio which is the B surface push-in depth relative to the thickness of the laminate, are at least 35%. Even when affixing a member having a step or a member having a curved surface shape, the adhesive sheet sufficiently follows the step and curved surface of the member and has good reworkability
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Inventors:
TAKAHASHI YOICHI (JP)
ARAI TAKAYUKI (JP)
FUJII YUKA (JP)
ARAI TAKAYUKI (JP)
FUJII YUKA (JP)
Application Number:
PCT/JP2022/045846
Publication Date:
September 14, 2023
Filing Date:
December 13, 2022
Export Citation:
Assignee:
LINTEC CORP (JP)
International Classes:
C09J7/38; C09J7/10; C09J133/04; C09J175/04
Domestic Patent References:
| WO2019142905A1 | 2019-07-25 |
Foreign References:
| JP2015131924A | 2015-07-23 | |||
| JP2006124528A | 2006-05-18 | |||
| US20160370508A1 | 2016-12-22 |
Attorney, Agent or Firm:
MAEDA & SUZUKI (JP)
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