In the process of album printing, the intention expressed by customers is often related to the type of film covering, and the sub film and light film covering on the cover of album printing will produce different effects.

Covering light film, covering sub film, is the main process in the later stage of album printing, also known as over light film, over dumb film. It is a product that combines the coated plastic film with the paper printed matter after being heated and pressurized to form a paper plastic integration. It is one of the common post press processing technologies for paper printed matter. For example, the cover of the product manual printing, the cover of the album printing, the surface of the color box, etc., will use this process.

As a result of a thin and transparent plastic film on the surface of the coated printed matter, the surface is smooth and bright, which not only improves the glossiness and fastness of the printed matter, but also prolongs the service life of the printed matter. At the same time, the plastic film also plays a role of moisture-proof, waterproof, antifouling, wear-resistant, folding resistant, chemical corrosion resistant and other protection. The coating film can make the printing products colorful and full of three-dimensional feeling. If we use sub coating, we can make printing products bring a noble and elegant feeling to consumers.

It can be seen from the above content that the flesh eye of the printed matter covered with light film is transparent and bright, which makes the printed matter bright; the flesh eye of the printed matter covered with sub film is dark and lusterless, but the sub film will give people a high-grade and elegant feeling, which makes the printed matter full of artistic charm. Improve the quality and added value of commodity packaging.