| abstract |
A laminated polyester film composed of an aromatic copolyester layer having a surface roughness (Ra) of 2-13 nm and a polyester layer having a surface roughness (Ra) of at least 15 nm. This film is improved in impact resistance, particularly at low temperatures, and taste retention while keeping the excellent processability, heat resistance, retorting resistance, and flavor retention inherent in copolyester films. |