Title:
A manufacturing method of a polarizability lamination film and a polarizing plate
Document Type and Number:
Japanese Patent JP6235370
Kind Code:
B2
Abstract:
This invention provides a method for manufacturing a polarizing multilayer film, said method including the following steps: a step in which a polyvinyl-alcohol-resin layer is formed on the surface of a base film, yielding a multilayer film; a step in which said multilayer film is stretched, yielding a stretched film; and a step in which a dichroic pigment is used to dye the polyvinyl-alcohol-resin layer of the stretched film so as to make said layer into a polarizer layer, yielding a polarizing multilayer film. The arithmetic average roughness (Ra0) of the surface of the base film on which the polyvinyl-alcohol-resin layer is formed is less than or equal to 130 nm. This invention also provides a method for manufacturing a polarizing plate, said method including the following steps, in this order: a step in which a first protective film is affixed to the surface of the polarizer layer in the obtained polarizing multilayer film that faces away from the base film; and a step in which the base film is peeled off.
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Inventors:
Yuuichiro Kuuchi
Application Number:
JP2014029691A
Publication Date:
November 22, 2017
Filing Date:
February 19, 2014
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
G02F1/1335; G02B5/30
Domestic Patent References:
| JP2013037115A | ||||
| JP2013210488A | ||||
| JP2013238640A | ||||
| JP2003043257A | ||||
| JP2009139510A | ||||
| JP2012189868A | ||||
| JP2017119885A |
Foreign References:
| WO2011125958A1 |
Attorney, Agent or Firm:
Fukami patent office