PET (Polyethylene Terephthalate) composite film capable of being directly subjected to laser holographic mould pressing and preparation process of PET composite film

The invention relates to the field of laser films, and particularly discloses a PET (Polyethylene Terephthalate) composite film capable of being directly subjected to laser holographic mould pressing and a preparation process thereof. The PET composite film comprises a UV offset printing layer, a base film, a mould pressing layer and an aluminum layer, the base film is prepared from the following raw materials in parts by mass: 15 to 25 parts of modified PET (Polyethylene Terephthalate), 80 to 90 parts of PET and 5 to 10 parts of modified filler; the mould pressing layer is prepared from the following raw materials in parts by mass: 80 to 90 parts of amorphous copolyester, 10 to 20 parts of PET (Polyethylene Terephthalate), 10 to 20 parts of polybutylene terephthalate and 5 to 15 parts of polyvinyl acetate; the thickness of the UV offset printing layer is 0.5-1 [mu] m, the thickness of the base film is 4-8 [mu] m, the thickness of the mold pressing layer is 0.5-2 [mu] m, and the thickness of the aluminum laye