The upper and lower films are forbidden The upper and lower films are forbidden refers to the problem that occurs when the front and back sides are not aligned when the bag is made. The compound film is uneven in thickness and has lotus leaves. Double lift roller tension is too small, the roller does not rotate smoothly. Solution: Check and adjust the relevant guide rollers (such as offset rollers, deflection rollers, etc.).
        Adjust the tension of the double-floating roller. There are variegated on the cover, air bubbles, variegated on the cover, and air bubbles are the cause of uneven sealing surface. When heat-sealing a structure that is rich in hygroscopic raw materials such as nylon films, the hygroscopic film absorbs moisture and generates bubbles. Lack of heat seal pressure.
        Use single-component adhesives, such as neoprene adhesives, when heat-sealing bags. Hot covers can easily show uneven pits. Solution: Replace the adhesive. View or adjust heat seal knives and heat seal silicone pads. Store raw materials and semi-finished products properly to prevent them from absorbing moisture.
        Scale errors occur due to operational factors such as improper tension control, lack of pressure setting for the pressure roller of the film-feeding rubber roller, etc. Electric eye tracking is forbidden. Influence of processing speed of plastic composite film bag making. The bag making mechanism has a poor bag length and fixed length system.

        Solution Reduce the speed of bag making, and adjust the speed of bag making slowly. The pre-adjusted film feeding length (when adjusting the white bag) and the actual bag-making scale should be as accurate as possible. Check the compression degree of the compressed film ruler and whether the friction coefficient of the composite coating is appropriate. Adjust the pressure of the film-feeding rubber roller, the cylinder pressure and the tension of each part to see if there is a question about the cursor printing or distance, and adjust it.