MULTI-LAYERED, TRANSPARENT, BIAXIALLY ORIENTED POLYESTER FILM HAVING EXCELLENT OPTICAL PROPERTY AND GOOD PROCESSABILITY, AND PROCESS FOR PRODUCTION AND USE THEREOF

摘要

PURPOSE: Provided are a multi-layered, transparent, biaxially oriented polyester film which has an excellent optical property, a good processability, printability and bactericidal action and a process for production and use thereof. CONSTITUTION: The multi-layered, transparent, biaxially oriented polyester film comprises at least one base layer B; at least one outer layer A; and at least one acrylic coating D. A filling material is introduced to the base layer B in a way of re-pulverizing cuts. The outer layer A contains 500 to 2500 ppm of a filling material, based on weight of the outer layer. The filling material is composed of SiO2 and a mean particle diameter(d50) thereof is 10 to 60 nm and/or 1.0 to 5 micrometers. The continually cross-linked acrylic coating D is applied in a form of an aqueous dispersion to at least one side of the film.