Title:
粘着シート、構成体および構成体の製造方法
Document Type and Number:
Japanese Patent JP7369757
Kind Code:
B2
Abstract:
An adhesive sheet (1) comprising an adhesive layer (11) composed of an adhesive having active energy ray curability and ultraviolet ray absorbability, wherein when one surface of the adhesive layer (11) is irradiated with ultraviolet rays having a light amount of 2000 mJ/cm2 to cure the adhesive layer (11) and an infrared absorption spectrum is then measured by a total reflection measurement method for each of an irradiated surface and a non-irradiated surface, the maximum value of the absolute value of absorbance is 0.0001 to 0.012 within a wavenumber range of 700 to 1000 cm−1 in a difference spectrum obtained by subtracting the infrared absorption spectrum of the non-irradiated surface from the infrared absorption spectrum of the irradiated surface, and when the adhesive layer (11) is irradiated with ultraviolet rays having a light amount of 2000 mJ/cm2 to cure the adhesive layer (11), the difference in a gel fraction of the adhesive constituting the adhesive layer (11) before and after the irradiation is 5 points or more and 50 points or less. According to such an adhesive sheet (1), both the light resistance and the blister resistance can be achieved satisfactorily.
Inventors:
▲高▼橋 洋一
Sho Kosaba
Yuka Fujii
Sho Kosaba
Yuka Fujii
Application Number:
JP2021193942A
Publication Date:
October 26, 2023
Filing Date:
November 30, 2021
Export Citation:
Assignee:
Lintec Corporation
International Classes:
C09J7/38; B32B27/00; B32B27/18; C09J4/02; C09J11/06; C09J133/06
Domestic Patent References:
| JP2019167422A | ||||
| JP201944023A | ||||
| JP201944024A | ||||
| JP202026491A | ||||
| JP2019210446A | ||||
| JP20173906A |
Attorney, Agent or Firm:
Yuji Hayakawa
Keisuke Murasame
Rikei Iida
Keisuke Murasame
Rikei Iida