| 摘要 |
A starting material, which comprises: 5 to 50 parts by mass of a recycle polyester material in which a first carbodiimide compound is deactivated by bringing an inert gas or air with a dew point of -25°C or below and an isocyanate concentration of 0.01 ppm to 100 ppm into contact with a recycle polyester material including the first carbodiimide compound and then performing drying; 50 to 95 parts by mass of a polyester resin; and a second carbodiimide compound, is subjected to melt extrusion which involves performing melt-kneading and extruding a molten resin using an extruder, and then moulding is performed in order to form a film shape, and accordingly a polyester film having the total content of a carbodiimide compound of 0.1 to 2.0 mass% is formed. |
