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Title:
SELF-ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2021/187595
Kind Code:
A1
Abstract:
This self adhesive sheet contains a 4-methyl-1-pentene copolymer. The self adhesive sheet preferably has at least one temperature, within a range of 10-100ºC, at which a local maximum value of a loss tangent (tanδ) is obtained as determined by measuring the dynamic viscoelasticity at a temperature elevation rate of 4ºC/min, a frequency of 1.59Hz, and a distortion amount of 0.1%. The local maximum value of the loss tangent is preferably 0.5-3.5, the arithmetic average roughness Ra on one surface thereof is preferably within a range of 0.01-10 µm, and the ten-point average roughness Rz is preferably within a range of 0.1-50 µm.

Inventors:
NISHIKAWA SHIGEO (JP)
TAHARA SYUJI (JP)
SHINADA TSUNETOSHI (JP)
UEDA TAKESHI (JP)
Application Number:
PCT/JP2021/011183
Publication Date:
September 23, 2021
Filing Date:
March 18, 2021
Export Citation:
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Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
A44B18/00; B32B27/00; B32B27/32; B65D65/00; C08F210/14; C08J5/00; C09J7/26; C09J7/38; C09J123/02; C09J123/20; H05K1/02
Attorney, Agent or Firm:
HAYAMI Shinji (JP)
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