PVC decorative film has good comprehensive performance, and it is more and more widely used in building decoration watershed. PVC decorative film is a new type of decorative material made of polymer polymerization, which is used in household appliances, indoor and outdoor decoration, equipment surfaces and other scenarios. PVC decorative film is characterized by convenient construction, one-time success, no need to use paint and coating, consistent product color, good wear resistance, flame retardancy and aging resistance, these characteristics make it stand out among similar products, the market The demand is steadily increasing.

Matters needing attention in the production of decorative film:

1. The problem of product size. Biaxially oriented PVC decorative films often suffer from dimensional instability. Therefore, in the process of stretching, attention should be paid to the stretching ratio in different directions to ensure that the film stretches and shrinks evenly at each point. In addition, attention should be paid to maintaining temperature balance during the stretching process, maintaining a constant temperature after stretching and then slowly cooling the temperature to room temperature. In the stretching process, the air convection factors that may be caused by ventilation should be considered to avoid air convection interfering with the product size.

2. The problem of uneven thickness of decorative film. If the thickness of the film coming out of the calender is not uniform, it can be improved by adopting the crossover of the middle roller and adjusting the temperature of the roller. If the film thickness is uneven due to stretching, this is due to the rapid heat dissipation on both sides of the film, and the low temperature leads to a thicker film. A thermal protection cover can be added on both sides of the expansion to prevent the heat from dissipating too quickly.

3. The problem of uneven film winding. It may be the reason for the unreasonable speed of the film roll, or the film sticking to the roll. Adjust the film roll speed, adjust the tension roll, check whether the film sticks to the roll and whether the film is flat. The cooling water temperature of the calender should be properly controlled, and the water temperature should not be too high, otherwise it will affect the flatness of the film. Note that when the calender adjusts the roll distance, it must be carried out in the state of strip material. In addition, pay attention that the film cannot be stained with dust, pay attention to the cleanliness of the production environment, and avoid impurities on the surface of the decorative film.

4. Film color problem. Pay attention to the quality and proportion of the colorant, adopt the correct mixing operation, and put the colorant into the material center several times to avoid long-term waiting for the material to be placed, and ensure that the colorant, plasticizer and other additives are mixed evenly .