Uniaxially oriented polyester film, hard coat film, sensor film for touch panel, anti-scattering film, antireflection film, touch panel and method for producing uniaxially oriented polyester film

摘要

A uniaxially oriented polyester film satisfying the following formula can suppress the occurrence of rainbow unevenness, can eliminate wrinkles and breakage in the processing step, and has a thickness suitable for a touch panel substrate; 20 μm ≦ t ≦ 60 μm; 2000 nm ≦ Re ≦ 6500 nm; 0.7 ≦ Re / Rth ≦ 1.4; 2000 MPa ≦ EMD; 2 ≦ ETD / EMD ≦ 3; 5 g · cm / cm ≦ TRTD; 50 MPa ≦ TBMD; t is the film thickness; Rth is the retardation in the film thickness direction; EMD is the elastic modulus in the film longitudinal direction; ETD is the elastic modulus in the film width direction; TRTD is the tear strength in the film width direction; TBMD is the breaking strength in the film longitudinal direction; , Sensor film for touch panel, anti-scattering film, anti-reflection film, touch panel And uniaxially oriented polyester film.