Project Background：

During the extrusion, stretching, winding, and subsequent slitting processes in film production, high-speed friction between the film and the equipment rollers, as well as peeling contact between films, can easily generate a large amount of static electricity. The charged film will strongly adsorb dust and fibrous impurities in the air, resulting in dirty spots and imperfections on the film surface, affecting the transparency and appearance quality of the product, and increasing the rate of defective finished products. At the same time, static electricity may cause electric shock discomfort to operators, and the adsorbed impurities can also contaminate the equipment rollers, increasing the cost of equipment cleaning and maintenance.

Solution

At the exit of the cooling roller after film formation, a long strip-shaped ionizing air bar is installed in parallel along the width direction of the film. The uniform ionized airflow released by the ionizing air bar quickly neutralizes the initial static electricity generated on the film surface due to extrusion cooling and roller shaft friction, preventing the adsorption of impurities during subsequent conveying processes;