METHOD FOR MANUFACTURING LAYERED OPTICAL FILM

WIPO Patent Application WO/2017/138449

A1

Provided is a method for manufacturing a layered optical film, whereby it is possible to suppress the occurrence of defects in the layered optical film which are based on flaws or deformation in an affixing roll. A first optical film 2 and a second optical film 3 disposed on one or both surfaces of the first optical film 2 via an adhesive layer or a pressure-sensitive-adhesive layer are introduced between a pair of rotating affixing rolls 1, 1, and the first optical film 2 and the second optical film 3 are affixed to each other. Here, among the pair of affixing rolls 1, 1, because an outermost layer of at least one affixing roll 1 is rubber and the elastic recovery rate of the rubber is 70% or greater, flaws are not prone to occur in the affixing roll 1, and the affixing roll 1 readily recovers from deformation.

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AMITANI KEIJI (JP)
MATSUOKA YUSUKE (JP)
YOSHIDA NAOKI (JP)

PCT/JP2017/003944

August 17, 2017

February 03, 2017

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SUMITOMO CHEMICAL CO (JP)

G02B5/30; B29C65/48; B29C65/78; B32B37/10; B29L7/00; B29L9/00; B29L11/00

JP2014016450A	2014-01-30
JP2011138032A	2011-07-14
JP2014166707A	2014-09-11
JP2010159810A	2010-07-22
JP2012150453A	2012-08-09
JP2007256688A	2007-10-04
JP2010134255A	2010-06-17

NAKAYAMA, Tohru et al. (JP)

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