To obtain a biaxially oriented laminated film for laminating a metal plate adapted to a metal can have excellent moldability and taste characteristics by specifying the metal element amounts of metal compounds contained in layers A and B of a polyester film having the layer B laminated on the one surface of the layer A.
The layers A and B of a polyester film having the layer B laminated on at least one surface of the layer A each contains a metal compound arbitrarily selected from antimony compounds, germanium compounds and titanium compounds. The metal element amount of the metal compound in the layer A is less than 80ppm, and the metal element of the metal compound in the layer B is 80 to less than 1000ppm. The catalyst metal amount in the layer A is reduced to obtain the film having excellent taste characteristics with reduced generation of a low-molecular-weight compound even if it receives a heat history. The catalyst metal amount in the layer B is increased to obtain a film having small thickness irregularity and excellent moldability.
ABE KOICHI
OSHIMA KATSUNORI
