1. Prints with poor flatness are prone to wrinkles when coated, and because of the unevenness of the paper, the adhesive cannot be evenly coated on the paper, resulting in film peeling and blistering.
        2. After the product is printed, it should be stored for a period of time to facilitate the evaporation of paper moisture. Otherwise, after the film is laminated, as the moisture evaporates, the paper fibers shrink, which will cause the film to wrinkle.
        3. If the surface roughness of the printed matter is too high, it will affect the castability (leveling and spreading) of the adhesive, resulting in uneven coating, and the product surface after coating will produce bright spots or "fogging" with uneven gloss.
        4. It is inevitable to use chemical syrup in the printing process, and it is easy to change the surface structure of the paper, so that the adhesive and the paper can not be in good contact, resulting in the product blistering after long-term storage.
        5. When the automatic laminator is in the peritoneum, the adhesive layer on the surface of the printed product is dried to the initial dryness, and the thickness is about 0.002mm~0.003mm. Snowy spots.
        6. If the ink layer on the surface of the printed matter is too thick or not dry, the adhesive applied by the automatic laminating machine during the lamination cannot penetrate through the pores between the ink layer and the paper to bond, and false bonding will occur, resulting in The finished film foams in a short time.