| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester film to be laminated on a metal plate and molded that has excellent impact resistance and improved moldability while having excellent heat resistance, taste and flavor retention properties and retort resistance. SOLUTION: The polyester film is a film formed of a polyester comprising a dicarboxylic acid component composed mainly of a terephthalic acid and a glycol component composed mainly of 1,3-propanediol and has a surface roughness (Ra) of 4-30 nm. A polyester is preferably a poly-1,3-propylene terephthalate/naphthalene dicarboxylate copolymer. |
