First, after the thermal lamination film, the viscosity is not enough and it is easy to open the glue
1, the reason: the surface of the coated product has dust, stains, ink is not dry; Precoating film quality problems; The temperature and pressure are not enough when the film is coated; The thickness of the glue layer or the wrong formula may cause the thermal lamination film to be not sticky enough and foam unadhesive.
2, the solution: keep the production film environment clean and dust-free; When purchasing thermal lamination film, you can communicate with the manufacturer first, take samples for testing, to see if the product meets the production requirements; And manufacturers to carry out technical discussion, adjust the film temperature and pressure according to local conditions (any problems, can be timely contact after-sales, to solve).
Second, after the thermal lamination film, there are bubbles or snow spots
1, the reason: the surface of the coated product itself is rough and uneven or the surface has dust and impurities; When the film is covered, the operation is improper, and the pressure, temperature and speed are not well matched, which makes the air enter and produce bubbles; Reasons for uneven coating in the process of thermal lamination film production.
2. Solution: Pretreat the surface of the coated product first to make it better fit with the thermal lamination film; Adjust the process of laminating operation, if there is a problem contact the manufacturer; Pay attention to the inspection of thermal lamination film products when purchasing and receiving.
Third, Folds appear after the film is coated
1, the reason: the thermal lamination film tension control is not balanced; The shrinkage rate of precoated and coated products is different during laminating. The temperature of coating is too high; Too much pressure or inequality can cause wrinkles.
2, solution: adjust the tension of winding; In the procurement process, send samples for testing, and then conduct mass procurement successfully; In the process of film coating, timely attention to the finished product, timely and effective adjustment of the temperature and pressure of the roller.
All in all, the most effective way to prevent problems is to conduct sample testing and custom production thermal lamination film.
