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.

公开(公告)号：US20240239978A1

公开(公告)日：2024-07-18

申请号：US18559237

申请日：2022-05-04

Applicant: TORAY ADVANCED MATERIALS KOREA INC.

Inventor： Min Gi HONG ,  Young Ho KIM

IPC: C08J5/18 ,  B29C48/00 ,  B29C48/08 ,  B29C55/00 ,  B29C55/14 ,  B29C55/18 ,  B29K67/00 ,  B29K105/16 ,  B29K509/00 ,  C08K3/36 ,  H01M50/414 ,  H01M50/434 ,  H01M50/446 ,  H01M50/489

CPC classification number: C08J5/18 ,  C08K3/36 ,  H01M50/414 ,  H01M50/434 ,  H01M50/446 ,  H01M50/489 ,  B29C48/0018 ,  B29C48/08 ,  B29C55/005 ,  B29C55/14 ,  B29C55/18 ,  B29K2067/003 ,  B29K2105/16 ,  B29K2509/00 ,  C08J2367/02 ,  C08K2201/005

Abstract: A biaxially oriented polyester film according to the present invention is a biaxially oriented polyester film comprising inorganic particles and a polyester resin, wherein the hardness of a roll obtained by slitting a master roll on which the biaxially oriented polyester film is wound and then by being rewound thereon at a winding tension of 6.5 kg/m to 8.5 kg/m, a winding surface pressure of 35 kg/m to 50 kg/m and a winding rate of 300 m/min to 350 m/min, is 90 to 95 points. The biaxially oriented polyester film prevents the roll from forming wrinkles over time in a roll wound state, and therefore when used as an interlayer of a secondary battery separator, can prevent wrinkles from transferring onto the separator.

公开(公告)号：US20210053332A1

公开(公告)日：2021-02-25

申请号：US16964642

申请日：2019-01-24

Applicant: TORAY ADVANCED MATERIALS KOREA INC.

Inventor： Young Ho KIM ,  Chang Hee KIM ,  Gyu Seok LEE ,  Sung Heui HONG

IPC: B32B27/36 ,  B32B27/08

Abstract: The present invention relates to a polyester film for windows, which can block harmful ultraviolet rays from outside or prevent glare from direct sunlight and reduce thermal energy when attached to an exterior wall glass of a building or a vehicle, which can also resolve the phenomenon that an image is blurred or unclear and the image is broken when looking at an external shape through the glass, and in which a clear external shape can be confirmed even through a polyester film because fine roll-drag defects in the longitudinal that could be caused in the manufacturing process of the polyester film are not visible, and the film can be easily shrunk and peeled off even at high temperatures when applying a window film to the glass of a vehicle or a building with the polyester film being laminated with a release film.