| 摘要 |
PURPOSE: A polyester film is provided which has good whiteness, drawing processing property and excellent antistatic property regardless of the processing temperature and the humidity of the film so it is useful as a magnetic recording card, printing materials and labels. CONSTITUTION: The polyester film consists of: (i) a first polymer resin layer which is made of a first polyester resin containing not less than 60 mol.% of ethylene terephthalate as a repeating unit and having a limit viscosity of 0.4-0.9 deciliter per gram, and 10-30 wt.% of a conductive materials having a surface resistance of 15 ohm centimeter, based on the weight of the first polyester resin; and (ii) a second polymer resin layer which is laminated on one side of the first polymer resin layer and is made of a second polyester resin containing not less than 60 mol.% of ethylene terephthalate as a repeating unit and having a limit viscosity of 0.4-0.9 deciliter per gram, and 5-15 wt.% of a white color based on the weight of the second polyester resin.
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