Title:
OPTICAL LAMINATE
Document Type and Number:
WIPO Patent Application WO/2022/113400
Kind Code:
A1
Abstract:
An optical laminate 1 includes a glass plate 2, an adhesive layer 3, and a film 4 in this order toward one side in the thickness direction. The one side in the thickness direction is a visible side. In the pen-drop crack test described below, a pen drop height H1 at which the glass plate 2 begins to crack is equal to or greater than 15 cm. An adhesive layer 12 having a shear storage modulus G' of 0.03 MPa and a thickness of 15 µm is disposed on the other surface of the optical laminate 1 in the thickness direction. A pen 29 having a weight of 7 g and a ball diameter of 0.7 mm in a ball thereof is dropped toward the film 4. The height from which the pen is dropped is gradually increased, and a height at which a crack is confirmed in the glass plate 2 is acquired as the height H1 in the pen-drop crack test.
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Inventors:
YANO TAKANOBU (JP)
Application Number:
PCT/JP2021/018807
Publication Date:
June 02, 2022
Filing Date:
May 18, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B32B17/10; B32B17/08
Domestic Patent References:
| WO2019066078A1 | 2019-04-04 |
Foreign References:
| JP2017209918A | 2017-11-30 | |||
| JP2001113631A | 2001-04-24 | |||
| JP2013184396A | 2013-09-19 | |||
| JP2006150755A | 2006-06-15 |
Attorney, Agent or Firm:
OKAMOTO, Hiroyuki et al. (JP)
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