| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated film which is excellent in gas barrier properties, can exhibit excellent adhesion that is free from delamination, is easily produced, and is excellent in economical efficiency, not only in an ordinary state but also even after having been subjected to a retort treatment when formed into a gas barrier laminated film having an inorganic thin film layer.SOLUTION: There is provided a laminated film which has a coating layer provided on at least one surface of a polyester base material film, where the coating layer contains not only an oxazoline group but also an acrylic resin, the film thickness (D) of the coating layer is 5-150 nm, and a ratio (P1/P2) between a peak intensity (P1) of a peak having absorption maximum in a region of 1655±10 cm-1 and a peak intensity (P2) of a peak having absorption maximum in a region of 1580±10 cm-1 and the film thickness (D) of the coating layer, in a total reflection infrared absorption spectrum of the coating layer satisfies a relationship of 0.035≤(P1/P2)/D≤0.15.SELECTED DRAWING: None |
