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1. (WO2018037816) METHOD FOR PRODUCING HYDROUS WATER ABSORBENT SHEET

Pub. No.:    WO/2018/037816    International Application No.:    PCT/JP2017/026983
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Thu Jul 27 01:59:59 CEST 2017
IPC: B32B 38/18
B05D 3/06
B05D 3/10
B05D 5/00
B32B 27/16
C08F 2/48
G02B 1/04
Applicants: DEXERIALS CORPORATION
デクセリアルズ株式会社
Inventors: MATSUSHIMA, Takayuki
松島 隆行
Title: METHOD FOR PRODUCING HYDROUS WATER ABSORBENT SHEET
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.