公开(公告)号：US20170210104A1

公开(公告)日：2017-07-27

申请号：US15514849

申请日：2015-09-30

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jun Kil DOO ,  Sang Hwa SHIM ,  Chun Sung CHO

IPC: B32B27/08 ,  B32B27/36 ,  B32B7/02 ,  B32B27/30

CPC classification number: B32B27/08 ,  B32B7/02 ,  B32B27/30 ,  B32B27/308 ,  B32B27/36 ,  B32B27/365 ,  B32B2250/40 ,  B32B2307/30 ,  B32B2307/412 ,  B32B2307/536 ,  B32B2307/546 ,  B32B2307/7265 ,  B32B2307/732 ,  B32B2307/734 ,  B32B2457/20

Abstract: This invention relates to a transparent plastic sheet including a support layer composed of a polycarbonate-based resin layer and a surface layer formed on the support layer and composed of a polymethylmethacrylate-based resin layer having a glass transition temperature of 120 to 135° C., wherein the polymethylmethacrylate-based resin layer has a thickness corresponding to 5 to 20% of a total thickness of the sheet, and the sheet has a total transmittance of 89 to 94% based on ASTM D1003, whereby the transparent plastic sheet can be minimally deformed under high-temperature and high-humidity conditions and can thus be usefully applied as a window cover for various display products, in lieu of glass.