Pre-coated film is the process of pre-coating and rewinding plastic film before laminating it with paper prints. It is first applied by the pre-coated film processing factory according to the use of specifications and width, the glue is coated on the film rewinding for the use of manufacturers to choose, and then laminated with printed materials. Laminating, or laminating, is a processing technology in which plastic film is coated with adhesive and bonded with paper printed materials after heating and pressure to form a paper-plastic product. By the lamination of printed materials, due to the surface of a thin and transparent plastic film, the surface is smoother and brighter, thereby improving the gloss and fastness of the printed materials, the graphic color is more vivid, three-dimensional, while more waterproof, stain-resistant, wear-resistant, folding, chemical corrosion resistance.