Title:
ADHESIVE SHEET, ARTICLE, AND ARTICLE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/244652
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an adhesive sheet which suppresses formation of air bubbles, run-off from end faces, and uplift or peeling due to residual stress, etc., and which enables curing and bonding, even in a bonded member having laminated therein a layer containing an ultraviolet absorbing agent or the like, through irradiation with an active energy ray, and further with which it is possible to achieve excellent transparency and adhesion properties. The present invention pertains to an active energy ray-curable polyurethane adhesive sheet which comprises an adhesive layer (A) having a specific tensile elastic modulus at 25°C and a specific tensile storage elastic modulus at 100°C, and which is characterized in that: a layer (A') resulting from curing of the adhesive layer (A) has a specific tensile storage elastic modulus at 100°C; the adhesive (A) contains a photopolymerization initiator having an absorption wavelength falling within a specific wavelength region; and said sheet is applied for the purpose of bonding two or more adherents that include an adherent capable of giving off gas in a specific environment.
Inventors:
SHIMOOKA SUMIO (JP)
MORINO AKINORI (JP)
YAMAKAWA DAISUKE (JP)
FURUKAWA TOMO (JP)
TSUNASHIMA KEIJI (JP)
TSUJIKAWA ATSUKO (JP)
MORINO AKINORI (JP)
YAMAKAWA DAISUKE (JP)
FURUKAWA TOMO (JP)
TSUNASHIMA KEIJI (JP)
TSUJIKAWA ATSUKO (JP)
Application Number:
PCT/JP2019/022493
Publication Date:
December 26, 2019
Filing Date:
June 06, 2019
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
B32B27/00; C09J7/38; B32B27/40; C09J11/06; C09J175/14
Domestic Patent References:
| WO2015098308A1 | 2015-07-02 | |||
| WO2015198775A1 | 2015-12-30 | |||
| WO2017104478A1 | 2017-06-22 | |||
| WO2019069621A1 | 2019-04-11 |
Foreign References:
| JP2017110143A | 2017-06-22 | |||
| JP2005112966A | 2005-04-28 |
Attorney, Agent or Firm:
OGAWA Shinji (JP)
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