LAYERED ARTICLE AND PEELING METHOD

WIPO Patent Application WO/2021/024741

A1

Provided is a layered article in which an adhesive layer can easily be peeled from a substrate layer using water or another water-based liquid while the substrate layer and the adhesive layer are bonded together in an excellent manner. A layered article having a substrate layer and an adhesive layer that is peelably layered on the substrate layer is provided. The adhesive layer is provided with a layer A that constitutes a substrate-layer-side surface. A hydrophilic layer is formed on the adhesive-layer-side surface of the substrate layer. The hydrophilic layer is an inorganic-material-containing layer. The peel strength N0 of the adhesive layer with respect to the substrate layer is 2.0 N/10 mm or greater. The layered article is such that the water peel force reduction rate, which is calculated from the water peel force N2 [N/10 mm] measured under prescribed conditions and the peel strength N0 [N/10 mm] using the expression (1 - (N2/N0)) × 100, is 40% or higher.

SHIMIZU YOSUKE (JP)
KOSAKA NAOFUMI (JP)
ASAI RYOKO (JP)
WATANABE MASAHIKO (JP)
NAKANISHI YOSUKE (JP)

PCT/JP2020/027651

February 11, 2021

July 16, 2020

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NITTO DENKO CORP (JP)

B32B9/00; B32B7/06; B32B27/00; B32B27/16; B32B27/18; C09J5/00; C09J7/29; C09J7/38; C09J201/00

WO2018211850A1	2018-11-22
WO2014157620A1	2014-10-02
WO2017064918A1	2017-04-20
WO2019151194A1	2019-08-08

JP2008023926A	2008-02-07
JP2009226621A	2009-10-08
JP2010180367A	2010-08-19
JP2013203883A	2013-10-07
JP2006299498A	2006-11-02
JP2009242792A	2009-10-22
JP2002040950A	2002-02-08

OI, Michiko (JP)

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