公开(公告)号：US11713379B2

公开(公告)日：2023-08-01

申请号：US16964637

申请日：2019-01-07

Applicant: TORAY ADVANCED MATERIALS KOREA, INC.

Inventor： Chang Ju Kim ,  Seong Sik Lim ,  Gyu Seok Lee ,  Sung Heui Hong

IPC: C08J5/18 ,  C08K3/26 ,  C08K3/30 ,  C08L67/02

CPC classification number: C08J5/18 ,  C08K3/26 ,  C08K3/30 ,  C08L67/02 ,  C08J2367/02 ,  C08J2425/06 ,  C08K2003/265 ,  C08K2003/3045 ,  C08K2201/005

Abstract: The present invention is suitable for optical applications with excellent transparency through a haze value of 1.5% or lower and particles that are hardly visible to the naked eye, by producing a film using particles having little difference in refractive index in polyethylene terephthalate (PET), which is a commonly-used polyester film, and can provide a highly transparent optical film capable of improving a winding property by forming surface roughness of 4 nm or higher.