Title:
OPTICAL DISC AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2019/069984
Kind Code:
A1
Abstract:
In the past, the problem has existed that curing of an adhesive layer is slow when recording substrates are affixed together with a UV-curable adhesive layer and used as a double-sided optical disc. This is thought to be because outgas penetrating from the recording substrates hampered the curing reaction of the adhesive layer. As a solution, in an optical disc of the present disclosure, a gas barrier layer is provided on the affixing surfaces of the substrates and penetration of outgas from the substrates to the UV-curable adhesive layer is suppressed, whereby when the recording substrates are affixed together with the UV curable adhesive layer, the adhesive layer can be cured in a short amount of time.
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Inventors:
USHIJIMA MASAKI (JP)
MORIWAKI YU (JP)
TAKETOMI TOMOYUKI (JP)
KIYONO KENJIRO (JP)
MORIWAKI YU (JP)
TAKETOMI TOMOYUKI (JP)
KIYONO KENJIRO (JP)
Application Number:
PCT/JP2018/037058
Publication Date:
April 11, 2019
Filing Date:
October 03, 2018
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
G11B7/24024; G11B7/2534; G11B7/26
Foreign References:
| JP2015197936A | 2015-11-09 | |||
| JP2005158162A | 2005-06-16 | |||
| JPH09147425A | 1997-06-06 | |||
| JPH1131337A | 1999-02-02 | |||
| JP2006155751A | 2006-06-15 | |||
| JP2006269037A | 2006-10-05 | |||
| JP2015197936A | 2015-11-09 | |||
| JP2017174487A | 2017-09-28 |
Other References:
See also references of EP 3693968A4
Attorney, Agent or Firm:
YAMAMOTO, Noriaki et al. (JP)
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