Ultraviolet-absorbing polyester film and method for manufacturing the same

A method for manufacturing an ultraviolet-absorbing polyester film, by recycling and reusing a recycled polyester material, the method comprising:

• physically reproducing a part of the recycled polyester material to obtain a plurality of physically recycled polyester chips;
• chemically reproducing another part of the recycled polyester material to obtain a plurality of chemically recycled polyester chips, wherein the plurality of chemically recycled polyester chips further includes chemically recycled electrostatic pinning polyester chips which contain at least one kind of electrostatic pinning additives, and the electrostatic pinning additives are metal salts;
• and
• mixing and then melt extruding the plurality of physically recycled polyester chips and the plurality of chemically recycled polyester chips to form the ultraviolet-absorbing polyester film;
• wherein, based on 100 parts by weight of a total content of the polyester chips, a content of the chemically recycled electrostatic pinning polyester chips of the plurality of chemically recycled polyester chips is between 5 and 35 parts by weight;
• wherein an ultraviolet absorber is added into the recycled polyester material in at least one of the physical reproducing step and the chemical reproducing step, the ultraviolet absorber is a monomer having an ultraviolet-absorbing functional group or an ultraviolet-absorbing compound, and the ultraviolet-absorbing polyester film contains the ultraviolet absorber.