Title:
METHOD FOR PRODUCING HYDROUS WATER ABSORBENT SHEET
Document Type and Number:
WIPO Patent Application WO/2018/037816
Kind Code:
A1
Abstract:
According to the present invention, a photocurable composition containing a hydrophilic monomer that produces a homopolymer having a glass transition temperature of 50°C or higher is prepared; a photocurable composition layer is formed on a base film pulled out from a feed roll by applying the photocurable composition to the base film; a water absorbent sheet is formed by photocuring the photocurable composition layer by irradiating the photocurable composition layer with ultraviolet light; the water absorbent sheet is caused to contain water by subjecting the water absorbent sheet to a water addition treatment; and the thus-obtained hydrous water absorbent sheet is wound around a take-up roll together with the base film. Consequently, a hydrous water absorbent sheet having good water absorption and excellent transparency is able to be produced by a roll-to-roll process.
Inventors:
MATSUSHIMA TAKAYUKI (JP)
Application Number:
PCT/JP2017/026983
Publication Date:
March 01, 2018
Filing Date:
July 26, 2017
Export Citation:
Assignee:
DEXERIALS CORP (JP)
International Classes:
B32B38/18; B05D3/06; B05D3/10; B05D5/00; B32B27/16; C08F2/48; G02B1/04
Domestic Patent References:
| WO2016059975A1 | 2016-04-21 | |||
| WO2014125942A1 | 2014-08-21 |
Foreign References:
| JP2016079269A | 2016-05-16 | |||
| JP2012066407A | 2012-04-05 | |||
| JP2013063605A | 2013-04-11 | |||
| JPH02111484A | 1990-04-24 | |||
| JP2016056347A | 2016-04-21 | |||
| JP2015132760A | 2015-07-23 | |||
| JP2008212832A | 2008-09-18 | |||
| JP2003298194A | 2003-10-17 | |||
| JP2011136270A | 2011-07-14 | |||
| US20160263614A1 | 2016-09-15 |
Attorney, Agent or Firm:
TAJIME & TAJIME (JP)
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