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1. (WO2013125781) MULTILAYER OPTICAL FILM HAVING HIGH HEAT RESISTANCE, AND METHOD FOR MANUFACTURING SAME

Pub. No.:    WO/2013/125781    International Application No.:    PCT/KR2012/011526
Publication Date: Fri Aug 30 01:59:59 CEST 2013 International Filing Date: Fri Dec 28 00:59:59 CET 2012
IPC: B32B 27/08
G02B 5/30
C08L 67/03
C08J 5/18
Applicants: LG HAUSYS, LTD.
(주)엘지하우시스
Inventors: LEE, Eung Kee
이응기
LEE, Min Hee
이민희
SHIN, Chang Hak
신창학
PARK, Ku Il
박구일
Title: MULTILAYER OPTICAL FILM HAVING HIGH HEAT RESISTANCE, AND METHOD FOR MANUFACTURING SAME
Abstract:
The present invention relates to a multilayer optical film having a structure in which a first resin layer and a second resin layer are alternately laminated, wherein the first resin layer comprises a crystalline naphthalene dicarboxylic-acid polyester and the second resin layer comprises polyethylene terephthalate glycol (PETG). Further, the present invention relates to a method for manufacturing a multilayer optical film, comprising the steps of: (a) alternately laminating a first resin comprising a crystalline naphthalene dicarboxylic-acid polyester and a second resin comprising PETG having undergone melt extrusion; and (b) stretching the laminated sheet from step (a) and then thermosetting the latter.