The principle of laminating by laminating machine is that the plastic film is coated with adhesive to make it and the paper as the printed matter of the substrate, and then pressed together by the rubber roller and the heating roller to form a paper-plastic one product. The printed product after lamination has a thin and transparent plastic film on the surface, which makes the surface smoother and brighter. The laminating machine not only improves the gloss and fastness of the printed product, but also extends the service life of the printed product. At the same time, the plastic film It also plays a protective role in wear resistance, folding resistance, waterproof, antifouling, and chemical resistance.
        If a transparent bright film laminating film is used, the printed graphics and text of the laminating product are more vivid and full of three-dimensional sense, which is especially suitable for the packaging of green food and other commodities, which can arouse people's appetite and consumption desire. If a matte film lamination is used, the lamination product will give consumers a noble and elegant feeling. Therefore, the packaging printed matter after laminating can significantly improve the grade and added value of the product packaging.