| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-quality optical laminated polyester film that has excellent heat resistance, excellent light transmittance, mechanical strength, and thickness accuracy that are original of the biaxially stretched film, that is less in the twist of the film at the thermal processing, and wherein the interference spots do not stand out and scars are few, when the cured material layer comprising the acrylic resin of the ultraviolet curing type or the electron beam curing type on the adhesion modified layer.SOLUTION: There is provided a biaxially oriented polyester film that is the polyester film that is provided with an adhesion modified layer that comprises a composition including at least the adhesion modification resin and the particle on one side face and wherein, the plane orientation degree (&Dgr;P) is 0.080-0.160, the film thickness spots are less than 8%, and obtained by the simultaneous biaxial stretching. |
