| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester film which can exhibit superior electromagnetic conversion characteristics and error rate characteristics even when used for a high-density magnetic recording tape, and is superior in handling characteristics in manufacturing processes.SOLUTION: There is provided a laminated film which is formed by laminating a layer A and layers B on both surfaces thereof through coextrusion and which uses the layer A by peeling the layers B. The layer A is formed of polyester A having, as a main repetition unit, ethylene terephthalate or ethylene-2,6-naphthalene dicarboxylate and has a thickness of 0.5-4.0 μm. The layers B are peelable from the polyester film A and are formed of a thermoplastic resin B. |
