Title:
粘着シート
Document Type and Number:
Japanese Patent JP6897334
Kind Code:
B2
Abstract:
To provide an adhesive sheet having strong adhesiveness, of which residue on a surface of an adherend during peeling is inhibited.SOLUTION: There is provided an adhesive sheet manufactured by laminating an adhesive layer on one surface of a sheet-like substrate, the adhesive layer is manufactured by polymerizing an adhesive composition containing a base polymer, a polyfunctional monomer having 2 or more double bonds having radical polymerizability, a monofunctional monomer having one double bond having radical polymerizability, and a low molecular weight oligomer, (1) adhesive force to SUS measured at 24 hr after adherend lamination is 10 N/25 mm or more, (2) lag after 24 hr of holding power to SUS measured under a condition at 80°C with a sinker of 1 kg is within 1 mm, and (3) probe tack value measured by a dynamic wettability measurement method is 8.0 N/5 mmφ or more. There is provided an adhesive sheet, in which the base polymer is preferably an acrylic polymer. There is provided an adhesive sheet, in which weight average molecular weight (Mw) of the low molecular weight oligomer is 500 to 50000.SELECTED DRAWING: None
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Inventors:
Kazumasa Tsuji
Takashi Yamaguchi
Masayuki Yamamoto
Takashi Yamaguchi
Masayuki Yamamoto
Application Number:
JP2017108304A
Publication Date:
June 30, 2021
Filing Date:
May 31, 2017
Export Citation:
Assignee:
Oji Holdings Co., Ltd.
International Classes:
C09J7/38; C09J4/02; C09J11/06; C09J133/00
Domestic Patent References:
| JP2020503419A | ||||
| JP2018504469A | ||||
| JP2009013322A | ||||
| JP2014012808A | ||||
| JP2014221873A | ||||
| JP2014034652A |
Foreign References:
| WO2011118181A1 | ||||
| WO2015111646A1 | ||||
| WO2016089805A1 | ||||
| WO2018119849A1 | ||||
| WO2014175306A1 | ||||
| WO2015005387A1 |
Attorney, Agent or Firm:
Patent Business Corporation Saegusa International Patent Office