EP 3812507 A4 20220126 - METHOD OF MANUFACTURING SHEET ARTICLE
Title (en)
METHOD OF MANUFACTURING SHEET ARTICLE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES BLATTARTIKELS
Title (fr)
PROCÉDÉ DE FABRICATION D'UN ARTICLE EN FEUILLE
Publication
Application
Priority
- JP 2018116758 A 20180620
- JP 2019024016 W 20190618
Abstract (en)
[origin: EP3812507A1] The present invention provides a method of manufacturing a sheet article achieving both an elegant appearance and a flexible feel and having good wear resistance even when a conventional low-polymerization, low-viscosity polyvinyl alcohol aqueous solution which is highly soluble in water is used in a manufacturing step considering the environment. The method of manufacturing a sheet article of the present invention is to sequentially perform the following steps 1 to 4:1. a polyvinyl alcohol-adding step of adding a polyvinyl alcohol aqueous solution, which is an aqueous solution of polyvinyl alcohol having the following characteristics, to a fibrous substrate having microfiber expression type fibers as its main constituent to add the polyvinyl alcohol in an amount of 0.1 to 50% by mass based on a mass of the fibers contained in the fibrous substrate(polyvinyl alcohol: a saponification degree is 90% or more, and an rrr composition abundance ratio is 14.5% or more in a heavy water solvent in tacticity evaluation measured by <sup>13</sup>C-NMR),2. microfiber expression step,3. polyurethane-adding step, and4. polyvinyl alcohol removal step.
IPC 8 full level
D06N 3/14 (2006.01); D06M 13/00 (2006.01); D06M 15/333 (2006.01); D06M 15/564 (2006.01); D06N 3/00 (2006.01); D06N 3/04 (2006.01)
CPC (source: EP KR)
D06M 7/00 (2013.01 - EP); D06M 15/333 (2013.01 - EP KR); D06M 15/564 (2013.01 - EP KR); D06N 3/0004 (2013.01 - EP); D06N 3/04 (2013.01 - EP KR); D06N 3/14 (2013.01 - EP KR); D06M 2200/35 (2013.01 - KR); D06N 2203/045 (2013.01 - EP); D06N 2203/068 (2013.01 - EP); D06N 2209/1685 (2013.01 - KR); D06N 2211/28 (2013.01 - EP)
Citation (search report)
No further relevant documents disclosed
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3812507 A1 20210428; EP 3812507 A4 20220126; CN 112262238 A 20210122; JP 7163959 B2 20221101; JP WO2019244862 A1 20210708; KR 102708132 B1 20240919; KR 20210018998 A 20210219; TW 202006200 A 20200201; TW I807050 B 20230701; WO 2019244862 A1 20191226
DOCDB simple family (application)
EP 19823144 A 20190618; CN 201980038469 A 20190618; JP 2019024016 W 20190618; JP 2020525734 A 20190618; KR 20207033225 A 20190618; TW 108121216 A 20190619