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Title:
ADHESIVE SHEET, OPTICAL MEMBER, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/155939
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an adhesive sheet (a surface protection film) which comprises a combination of a base material that has poor body and an adhesive agent layer that is likely to follow the shape of a curved part or an uneven part, and which can follow the shape of an optical member, a display device, a display constituting the display device or the like, i.e., an object of interest, having a curved part or an uneven part during the production/processing, conveyance, outgoing inspection, transportation and the like of the object of interest to thereby satisfactorily protect the object of interest. The adhesive sheet according to the present invention is composed of a base film and an adhesive agent layer made from an adhesive agent composition and formed on one surface or both surfaces of the base film, the adhesive sheet being characterized in that: the base film is a non-polyolefin film; when the adhesive sheet is cut into a specimen having a width of 50 mm and a length of 100 mm and the specimen is fixed on a horizontal table so as to protrude by 50 mm in the length direction, the perpendicularly drooping distance L is 30 mm or more; and, when the surface of the adhesive agent layer is bonded to a glass and then the adhesive agent layer is pulled in a 90-degree direction at a peeling speed of 1 mm/min, the peel force is 3.0 gf/50 mm or more.

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Inventors:
OKITA NATSUKO (JP)
MITSUI KAZUMA (JP)
HAYASHI KEIJI (JP)
Application Number:
PCT/JP2019/002924
Publication Date:
August 15, 2019
Filing Date:
January 29, 2019
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J7/22; C09J7/25; C09J133/00; C09J175/04; C09J183/00
Foreign References:
JP2012131976A2012-07-12
JP2002003799A2002-01-09
JP2014198830A2014-10-23
JP2009074060A2009-04-09
JPH08302304A1996-11-19
JPH06346032A1994-12-20
JP2013020726A2013-01-31
JP2018159054A2018-10-11
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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