| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester film being carbon neutral and using biomass ethylene glycol.SOLUTION: A polyester film comprises a resin composition including polyester composed of a diol unit and a dicarboxylic acid unit, and includes porous silica and biomass polyester including, with regard to an entire resin composition, 50-95 mass% of polyester having a diol component unit of biomass-derived ethylene glycol, and a dicarboxylic acid component unit of petroleum-derived dicarboxylic acid. The polyester film is formed by melt extrusion. |
