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Title:
A manufacturing method of a lamination optical film
Document Type and Number:
Japanese Patent JP6257824
Kind Code:
B2
Abstract:
Provided is a method for manufacturing a layered optical film capable of preventing soiling of a lamination roller by a bonding agent or an adhesive agent used for laminating optical films to each other. A method for manufacturing a layered optical film, by which a first optical film 2, a bonding agent layer 5, and a second optical film 3 are introduced and laminated between a pair of rotating lamination rollers 7a, 7b, wherein, during lamination, the width WA of the bonding agent layer 5 is the same or greater than the width W1 of the first optical film 2, the position of the first optical film 2 in the width direction is within the width WA where the bonding agent layer 5 is present, the width W2 of the second optical film 3 is greater than the width WA of the bonding agent layer 5, the second optical film 3 is positioned so as to include the width WA where the bonding agent layer 5 is present, and a third optical film 6 having a width greater than the width WA of the bonding agent layer 5 is interposed between the lamination roller 7a on the first optical film 2 side and the first optical film 2 so as to include the width WA of the bonding agent layer 5.

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Inventors:
Toshiyuki Naka
Takeshi Kawakami
Takuya Ando
Application Number:
JP2017099943A
Publication Date:
January 10, 2018
Filing Date:
May 19, 2017
Export Citation:
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Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
G02B5/30; B29C65/48; B32B7/02
Domestic Patent References:
JP2013160885A
JP2013120226A
JP2004184673A
JP2006088651A
JP2011161887A
JP2004155030A
JP2013186252A
Foreign References:
WO2013114612A1
WO2013114583A1
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshinori Shimizu
Takashi Mikami
Naoshi Fukuyama
Hiroshi Abe



 
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