Title:
ADHESIVE SHEET AND OPTICAL MEMBER
Document Type and Number:
Japanese Patent JP2016138221
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive sheet capable of improving pick-up property, and an optical member protected by the adhesive sheet.SOLUTION: The adhesive sheet includes a first resin layer, a second resin layer, a third resin layer, and an adhesive layer formed of an adhesive composition, in this order, in which the first resin layer and the third resin layer have a tensile strength of 180 MPa or more, the second resin layer has a tensile strength of less than 150 MPa, and a ratio of the thickness of the second resin layer to the sum of the thickness of the first resin layer and the thickness of the third resin layer is 10 or less. A 180° initial peeling strength of the adhesive sheet with respect to a triacetyl cellulose film is 6 N/25 mm or less at 23°C and 50% RH. A difference (deflection amount) between a center height H1 when the adhesive sheet is fixed at ends thereof to a glass sheet with a tape so that the adhesive surface thereof faces outside, and a center height H2 when a load of 4.8 g is mounted on the center position is less than 35 mm.SELECTED DRAWING: None
Inventors:
WATANABE NATSUKO
AMANO TATSUMI
MITSUI KAZUMA
AMANO TATSUMI
MITSUI KAZUMA
Application Number:
JP2015015383A
Publication Date:
August 04, 2016
Filing Date:
January 29, 2015
Export Citation:
Assignee:
NITTO DENKO CORP
International Classes:
C09J7/02; C09J133/00; C09J175/04; C09J183/04
Domestic Patent References:
| JP2010228211A | 2010-10-14 | |||
| JP2013068942A | 2013-04-18 | |||
| JP2009275060A | 2009-11-26 | |||
| JPS5350255U | 1978-04-27 | |||
| JP2013010867A | 2013-01-17 |
Attorney, Agent or Firm:
Patent Business Corporation Unias International Patent Office