MANUFACTURING METHOD FOR LAMINATED OPTICAL FILM

WIPO Patent Application WO/2017/146042

A1

Provided is a manufacturing method for a laminated optical film, capable of manufacturing a laminated optical film in which when some layers are peeled off from the laminated optical film provided with an optical film having a plurality of layers capable of being peeled off from each other, other layers are less prone to splitting. The manufacturing method for a laminated optical film in which a first optical film 2 having a plurality of layers capable of being peeled off from each other, an adhesive layer 5, and a second optical film 3 are introduced between a pair of rotating bonding rollers 7a, 7b and the first optical film 2 and the second optical film 3 are bonded, wherein: when bonding, the width WA of the adhesive layer 5 is at least the width W1 of the first optical film 2; the position in the width direction of the first optical film 2 is within the existence width WA of the adhesive layer 5; the width W2 of the second optical film 2 is at least the width WA of the adhesive layer 5; and the second optical film 2 is positioned so as to contain the existence width WA of the adhesive layer 5.

NAKA TOSHIYUKI (JP)
KAWAKAMI TAKESHI (JP)
ANDO TAKUYA (JP)

PCT/JP2017/006356

August 31, 2017

February 21, 2017

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SUMITOMO CHEMICAL CO (JP)

G02B5/30; B29C65/48; B32B7/02

WO2013114612A1

2013-08-08

JP2013160885A	2013-08-19
JP2006088651A	2006-04-06
JP2004184673A	2004-07-02
JP2011161887A	2011-08-25

NAKAYAMA, Tohru et al. (JP)

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