LAMINATED POLYESTER FILM USED TO BE LAMINATED THREE- PIECE METAL CAN

摘要

PROBLEM TO BE SOLVED: To provide a laminated polyester film for laminating a three-piece metal can excellent in adhesiveness and thermal dimensional stability and suitably used to be laminated to the inner and outer surfaces of the metal can comprising three pieces. SOLUTION: The laminated polyester film to be laminated to the three-piece metal can comprises two layers and one layer is constituted of polyester having thermal adhesiveness and the difference between the refractive indexes in the surface direction and thickness direction of this polyester layer is -0.05-0.05 and the polyester layer can be thermally bonded at 220 deg.C or lower. The curl degree showing the curving degree of the laminated polyester film is 0-20 [1/m].