Laminated polyester film

A laminated polyester film comprising

• a polyester film;
• a first coating layer formed by applying a coating solution which comprises polyvinyl alcohol, an oxazoline compound and at least one resin selected from the group consisting of a polyester resin, an acrylic resin, a urethane resin and an alkylated melamine compound on one surface of the polyester film;
• and
• a second coating layer formed on the other surface of the polyester film which has an absolute reflectance exhibiting one minimum value in a wavelength range of 300 to 800 nm, which minimum value is not more than 3.5%;
• wherein the first coating layer has a thickness of 0.002 to 1.0 μm, and the second coating layer has a thickness of 0.04 to 0.15 μm.

A laminated polyester film comprising

• a polyester film;
• a first coating layer formed by applying a coating solution which comprises polyvinyl alcohol, an oxazoline compound and at least one resin selected from the group consisting of a polyester resin, an acrylic resin, a urethane resin and a polyfunctional epoxy compound having at least two glycidyl ether structures on one surface of the polyester film;
• and
• a second coating layer formed on the other surface of the polyester film which has an absolute reflectance exhibiting one minimum value in a wavelength range of 300 to 800 nm, which minimum value is not more than 3.5%;
• wherein the first coating layer has a thickness of 0.002 to 1.0 μm, and the second coating layer has a thickness of 0.04 to 0.15 μm.