Method for producing polarizing plate and polarizing plate
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United States of America Patent
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Jun 12, 2018
Issued Date -
Dec 15, 2016
app pub date -
Feb 3, 2015
filing date -
Feb 27, 2014
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Abstract
A method for producing a polarizing plate is provided, which includes the steps of obtaining a laminated film by forming a polyvinyl alcohol-based resin layer on a surface of a substrate film, obtaining a stretched film by stretching the laminated film, obtaining a polarizing laminated film by forming a polarizing layer by dyeing the polyvinyl alcohol-based resin layer of the stretched film with a dichroic dye, bonding a protective film composed of a thermoplastic resin to a surface of the polarizing layer opposite to the substrate film with an adhesive layer being interposed, peeling off the substrate film, and forming a protective layer having a thickness not smaller than 3 μm and composed of a cured product of a photo-curable compound on a surface which appears as a result of peeling off of the substrate film.
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