Title:
CAST DRY FILM AND METHOD FOR MANUFACTURING SAME, METHOD FOR MANUFACTURING PVA GEL, AND PVA MULTILAYER GEL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/079895
Kind Code:
A1
Abstract:
[A] A cast dry film having a thickness of 250 μm or less, which is a dry-state transparent film in which only PVAs are physically crosslinked. [B] A method for manufacturing a PVA gel in which a first gel formed by crosslinking PVAs is bonded to a second gel formed by crosslinking PVAs, the method comprising: attaching the cast dry film to at least a portion of the adhesive surface of the first gel to which the second gel is bonded, and attaching the second gel to the adhesive surface with the cast dry film disposed therebetween, to thereby obtain a PVA gel precursor in which the first gel and the second gel are in contact with each other with the cast dry film disposed therebetween; and bonding the first gel and the second gel contained in the PVA gel precursor, to thereby obtain a PVA gel.
Inventors:
SUZUKI ATSUSHI (JP)
YAMAZAKI MASAYUKI (JP)
YAMAZAKI MASAYUKI (JP)
Application Number:
PCT/JP2020/039484
Publication Date:
April 29, 2021
Filing Date:
October 21, 2020
Export Citation:
Assignee:
NAT UNIV CORP YOKOHAMA NAT UNIV (JP)
International Classes:
B32B27/30; C08J5/18
Domestic Patent References:
| WO2018062030A1 | 2018-04-05 |
Foreign References:
| JP2015004059A | 2015-01-08 | |||
| JP2008531769A | 2008-08-14 | |||
| JP2005521809A | 2005-07-21 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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