The laminating process emerged in the 1960s, and the earliest use was the instant coating technology (that is, oily laminating). Later, the American GBC company invented the pre-coating film technology. Since this technology overcomes the various defects of the instant coating film, it has gradually replaced the instant coating film technology. Laminating is an important method for surface finishing of printed materials that use paper and other materials as carriers. The improvement of the quality of laminating has placed increasingly higher requirements on the stability and temperature control accuracy of the laminating machine.
        If a transparent bright film lamination is used, the printed graphics of the lamination product will be 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, elegant feeling. Therefore, the packaging printed matter after laminating can significantly improve the grade and added value of the product packaging.