| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal plate laminating molding polyester film having excellent impact resistance, molding processability, heat resistance, retort resistance, perfume and taste retentivities and the like. SOLUTION: In a laminated polyester film obtained by laminating a first layer (A) formed of isophthalate copolymerized polyester having a melting point of 210 to 245 deg.C and a second layer (B) formed of polyester composition containing 99 to 50 wt.% of copolymerized polyester (I) having a main repeating unit of ethylene terephthalate having a melting point of 210 to 245 deg.C and 1 to 50 wt.% of polyester (II) having a main repeating unit of butylene terephthalate having a melting point of 180 to 220 deg.C, OH terminal amount of the polyester (II) having the main repeating unit of the butylene terephthalate of the polyester (II) before melt mixing in the layer (B) is 50 to 150 equivalent/ ton. |
