Search International and National Patent Collections

1. (WO2018061306) WATER-DISINTEGRABLE SHEET AND METHOD FOR MANUFACTURING WATER-DISINTEGRABLE SHEET

Pub. No.:    WO/2018/061306    International Application No.:    PCT/JP2017/019158
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Wed May 24 01:59:59 CEST 2017
IPC: D21H 27/00
A47K 10/16
A47L 13/17
D21H 11/18
Applicants: DAIO PAPER CORPORATION
大王製紙株式会社
Inventors: MUKOYAMA, Shinpei
向山 真平
Title: WATER-DISINTEGRABLE SHEET AND METHOD FOR MANUFACTURING WATER-DISINTEGRABLE SHEET
Abstract:
Provided is a water-disintegrable sheet obtained by impregnating a base sheet with an aqueous chemical agent, wherein the base sheet has a per-unit area weight of 30-150 gsm and contains a water-soluble binder and cellulose nanofibers, the aqueous chemical agent contains a cross-linker for cross-linking with the water-soluble binder, the base sheet is in the state where the contained amount of the water-soluble binder and the cellulose nanofibers gradually increases from the inside to the outside of the base sheet in the thickness direction, and when an abrasion resistance test is carried out three times each in the MD direction and the CD direction by an oscillation-type rubbing fastness tester in which a PP band is used as an oscillator, calculation of the average of three measurements for each direction results in an average value of not less than 40 times for each direction. Thus, the resistance to breakage under intense abrasion is improved while water-disintegrating ability is ensured.