When the bag is made in a soft bag factory, problems such as dimensional error and misalignment of the upper and lower films will occur. This article analyzes the causes and proposes solutions for reference. 1. Size error Dimensional error refers to the deviation of the longitudinal dimensions of the bag. cause: 1. The system error of bag-length fixing system is too large. 2. The electric eye tracking is not allowed. 3. The influence of the processing speed of plastic composite film bags. 4. Operating factors, such as improper tension control, insufficient pressure setting of the pressure cylinder of the film-feeding rubber roller, etc. Solution: 1. Adjust the fixed-length system. 2. Adjust the working state of the electric eye. 3. Check if there are any problems with cursor printing or spacing, and adjust them. 4. Check whether the compression of the pressure film ruler and the friction coefficient of the composite film are appropriate. 5. The pre-adjusted film feeding length and actual bag size should be as accurate as possible. 6. Reduce the speed of bag making, and adjust the speed of bag making slowly. 7. Adjust the pressure of the rubber roller, cylinder pressure and pressure of each part. Second, the upper and lower films are not correct The misalignment of the upper and lower sheets refers to the problem that the front and back sides are not aligned when making the bag. cause: 1. The composite film is uneven in thickness and has ruffles. 2. The tension of the double floating roller is too small. 3. Some rollers do not rotate smoothly. Solution: 1. Adjust the tension of the double floating roller. 2. Check and adjust the relevant guide rollers (such as compensation rollers, deflection rollers, etc.).
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The size error, whether the upper and lower films are right, here are tips!