| abstract |
The present invention provides a film that is excellent in transparency and suppresses iridescent patterns (interference fringes) (visibility) when a hard coat layer is laminated, and has excellent initial adhesion to the hard coat layer, high temperature and high humidity A laminated polyester film that is excellent in adhesiveness (moisture-heat-resistant adhesiveness), adhesiveness when immersed in boiling water (boil-resistant adhesiveness), and excellent hot-water resistance and transparency when immersed in hot water. A laminated polyester film is a laminated polyester film having a resin layer (X) on at least one side of the polyester film, wherein the resin layer (X) is a layer formed using a coating composition, so The coating composition contains an acrylic-urethane copolymer resin (a), a polyester resin (b) having a naphthalene skeleton, an isocyanate compound (c) and a dicyclohexylmethanecarbodiimide compound (d), and the resin layer The amount of change ΔR in spectral reflectance before and after the boiling treatment test on the (X) side is 0% or more and 2% or less. |