(1) protect the paper by covering the film. After covering film, it can extend the service life of the cover (or printed surface), especially for the students' textbooks. Therefore, the dosage is increasing;
(2) prints are not easily destroyed. The utility model can increase the color effect and the protection function to the color printed picture without being worn after being coated with the film;
(3) that is, the production of coating film is large. Film coating, that is, the cost of making film is low, easy to start and earn money, enterprises can benefit.
The above is the introduction of vacuum laminating machine principle.