公开(公告)号：US20230340215A1

公开(公告)日：2023-10-26

申请号：US18013372

申请日：2021-04-20

Applicant: TORAY ADVANCED MATERIALS KOREA INC.

Inventor： Seung Hwan LEE ,  Young Ho KIM ,  Jae Hoon KIM ,  Jae Hee SEONG

IPC: C08J5/18 ,  C08K3/36 ,  C08K3/26 ,  B32B27/36 ,  B32B7/02 ,  B32B27/08 ,  B32B27/18

CPC classification number: C08J5/18 ,  C08K3/36 ,  C08K3/26 ,  B32B27/36 ,  B32B7/02 ,  B32B27/08 ,  B32B27/18 ,  C08J2367/02 ,  C08K2201/005 ,  C08K2003/265 ,  B32B2307/414 ,  B32B2264/302 ,  B32B2264/104 ,  B32B2264/1021 ,  B32B2307/7376 ,  B32B2307/518 ,  B32B2250/03 ,  B32B2250/244

Abstract: A laminated polyester film according to the present invention comprises: a core layer; and a sub-layer laminated on at least one surface of the core layer and containing a first particle and a second particle which are different components, wherein an average diameter of the first particle is 6 to 20 times of an average diameter of the second particle. Types, different properties, sizes, and contents of the first particle and the second particle are adjusted to solve the image blurring phenomenon and prevent a winding fault generated during processing and winding a final product. Therefore, workability and perfection of a final product can be increased and the defect rate can be decreased.