According to the 2023 Packaging Equipment Failure Statistics, film jamming accounts for 47% of bag making machine downtime. Tip 1 - Film tension calibration: uneven film roll tension causes web deviation. Measure with a tension sensor (model XZ-200) and adjust guide rollers No.3 and No.5 to within plus/minus 0.5N. Tip 2 - Heat sealing knife parallelism: a visibly tilted sealing knife causes jamming about 8 times per hour; after laser calibration the jamming drops to zero. Tip 3 - Static elimination blind spots: industry fact - when humidity is below 40%, static electricity on PE film attracts dust and scraps that cause jamming, yet 80% of manufacturers never test for it.