| abstract |
The present invention provides a polyester film having excellent heat-resistant dimensional stability, impact resistance properties, ease of slip, mechanical properties, transparency, and gas barrier properties, and a film roll obtained by winding the film. A polyester film having at least one or more layers mainly composed of a polyester resin, a plane orientation coefficient ΔP of 0.005 or more and 0.200 or less, a thickness of 1 μm or more and 300 μm or less, and a temperature of 150° C. The heating shrinkage ratio of heating for 30 minutes is 3.2% or less in both the MD direction and the TD direction, and the polyester resin has a layer containing at least one additive, and the polyester resin contains a dicarboxylic acid component containing furandicarboxylic acid as a main component and a A diol component in which ethylene glycol is the main component. |