Title:
MELT-EXTRUSION-TYPE POLARIZING FILM
Document Type and Number:
WIPO Patent Application WO/2021/066401
Kind Code:
A1
Abstract:
The present invention provides: a polarizing film in which a resin containing a dichroic dye is dispersed in a thermoplastic resin through a melt extrusion process, the dichroic dye is oriented through a dry drawing process, and the resin containing the oriented dichroic dye is continuously/discontinuously and randomly dispersed, in a needle form, in the thermoplastic resin in a predetermined direction; and a method for manufacturing the polarizing film. The present invention causes a resin composition including a polarizing function to be present in another resin, and thus does not require attachment of an additional protective film to a skin layer of a polarizing film, and enables the manufacture of a polarizing film through melt extrusion. Since the polarizing function is uniformly dispersed in the resin, the present invention is advantageous in reducing stains and the like on a polarizing film. In addition, a melt-extrusion-type manufacturing method can remarkably reduce environmental pollution and the like.
Inventors:
CHO DUKJAE (KR)
Application Number:
PCT/KR2020/013061
Publication Date:
April 08, 2021
Filing Date:
September 25, 2020
Export Citation:
Assignee:
CHO DUKJAE (KR)
International Classes:
G02B5/30; C08J5/18; C08J7/04; C08K3/013; C08K3/16; C08L29/04; C08L33/12; C08L67/02; G02B1/04
Foreign References:
| KR20070003910A | 2007-01-05 | |||
| JP2010234738A | 2010-10-21 | |||
| KR100950855B1 | 2010-03-31 | |||
| KR20100125164A | 2010-11-30 | |||
| JP2008518280A | 2008-05-29 |
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