| abstract |
It is provided that a polyester film excellent in heat resistant dimension stability, impact-resistant strength properties, easy-slipping properties, mechanical properties, transparency, and gas barrier performance, and a film roll obtained by winding up this polyester film. A polyester film includes at least one layer mainly including a polyester resin containing a dicarboxylic acid component including furandicarboxylic acid as a main component and a glycol component including ethylene glycol as a main component; and the polyester film has a plane orientation coefficient ΔP of not less than 0.005 and not more than 0.200, a thickness of not less than 1 μm and not more than 300 μm, a heat shrinkage rate of 3.2% or less in each of the MD direction and the TD direction at 150° C. for 30 minutes, and a layer containing at least one additive. |