PRODUCTION METHOD FOR ADHESIVE LAYER-EQUIPPED OPTICAL LAYERED BODY HAVING THROUGH-HOLE

WIPO Patent Application WO/2021/192391

A1

Provided is a method with which can be produced simply and inexpensively, an adhesive layer-equipped optical layered body having a through-hole and for which the loss of glue and the lifting of a separator and of a surface protection film have been suppressed. According to an embodiment of the present invention, the production method for the adhesive layer-equipped optical layered body having a through-hole comprises stacking a plurality of adhesive layer-equipped optical layered bodies to form a workpiece and forming the through-hole at a predetermined position on the workpiece by cutting using an end mill. The adhesive layer-equipped optical layered body comprises an optical film, an adhesive layer disposed on one side of the optical film, a separator adhered temporarily onto the adhesive layer in a releasable manner, and a surface protection film adhered temporarily onto the other side of the optical film in a releasable manner. The formation of the through-hole comprises pressing the end mill against an end surface of the hole and cutting while moving the end mill in either an upward or downward direction to perform the cutting.

NAKAICHI MAKOTO (JP)
YAMAMOTO YUKI (JP)

PCT/JP2020/041297

September 30, 2021

November 05, 2020

Click for automatic bibliography generation  

NITTO DENKO CORP (JP)

B23C3/00; B23C5/10; B32B1/04; B32B7/023; B32B27/00; C09J7/29; C09J7/38; C09J201/00; G02B5/30

WO2016203521A1	2016-12-22
WO2018016285A1	2018-01-25

JP6622439B1	2019-12-18
JP2012096339A	2012-05-24
JPS591512U	1984-01-07
JP2010076069A	2010-04-08
JP2016515716A	2016-05-30
JPH11197928A	1999-07-27
DE102010029445A1	2011-12-01

MOMII Takafumi (JP)

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