Laminating Film, which is made with polyester film as its substrate. Single piece of film is evenly coated with adhesive and specially treated, then high-grade sheet packing material is formed. Such film is widely used for various kinds of sheet-like materials covering and protection, such as ID card, cultural and historical data, photo, picture, credit card, license, business certificate, treasury letter, bond and traffic permit as well as representative card etc. And the laminating film covered on sheet-like materials has the excellent functions of waterproof, anti-altering, moisture proof, anti-worm eating and preventing corrosion of acid, alkalized agent etc. Moreover, film covered material has a nice and translucent looking.