| 摘要 |
PURPOSE: A biaxial streched polyester film is provided to reduce adhesion of a polyester film and to improve scratch, blocking property, runnability and workability caused during a film fabrication process while ensuring excellent transparency. CONSTITUTION: A biaxial streched polyester film comprises particles having a bimodal particle distribution satisfying chemical formula 1: 0.3 Δ D Δ 10, D = Vh/Vs. The refractive index difference between a substrate and particles satisfies chemical formula 2: ΔN Δ 0.3. In chemical formula 1, D is a ratio of Vh and Vs, Vh is the volume % of the peak showing big particle size among bimodal particle distributions and Vs is the volume % of the peak showing small particle size among bimodal particle distributions. |
