(1) Using instant film as the cover can protect the paper. After laminating, the service life of the cover (or the surface of the printed product) can be extended, especially for students' textbooks, so the amount of use is increasing.
        (2) Imprints are not easily destroyed. After being coated with a ready-to-use film, it can increase the color effect and protect the color printed graphics without being worn. This is conducive to the publishing house editors to make various art designs on the cover or printed surface according to their needs, so it also promotes the increase in usage.
        (3) The production of coating film is beneficial. In the automatic laminating machine, the production cost of the coating film is low, easy to start, and profitable, and the enterprise can benefit.
        The failure problems that often occur in laminating machines and how to solve them
        1. The machine does not start: the input wire is disconnected, the power cord is reversed, and the voltage is insufficient.
        Second, the temperature measurement is not accurate: thermocouple, temperature controller. Whether it is installed incorrectly and damaged.
        3. The working vacuum does not come up: the gas path is blocked, the hand valve or the solenoid valve is not closed, the vacuum pump motor belt is loose, and the vacuum gauge is damaged.
        4. The main power switch trips: leakage of the input wire on the top of the heating box, leakage of the distribution box, external wires on the equipment, leakage of the motor, etc.
        Fifth, the suction film is not in place: the vacuum is not enough, the air leakage, the temperature is not enough, the film is too thin, the workpiece is pasted with other materials, the concave depth of the workpiece exceeds the lift of the film, the suction time is too short, the film is not lifted, the distance between the workpiece Too close.
        Sixth, the surface of the returned workpiece has folds and is not smooth or the corners cannot be wrapped: the film is not straightened, the quality of the film is not good, the workpiece is not well polished, the glue is sprayed too much, and the mold below the workpiece is too low.
        7. The membrane is pulled down when the suction is not completed: whether the solenoid valve or the hand valve is open.