| abstract |
More particularly, the present invention relates to a method for producing a polyester resin having excellent transparency and winding property, and more particularly, to a method for producing a polyester resin having excellent transparency and winding property, Wherein the alumina-coated barium sulfate fine particles are fine particles having an average particle diameter D50 of 1.4 占 퐉 and an average particle diameter D90 of 4 占 퐉 or less to be. The polyester film of the present invention can control the particle size distribution of the fine particles to a specific range and is excellent in transparency and windability and is suitable for various packaging, laminate, graphic art, window coating, and membrane touch switches (Membrane Touch Switch), and the like, and has a high industrial value. |