1. Improper adjustment: If the position and adjustment of the cutting roller are incorrect, the yarn will run between the rollers or get entangled. This is caused by uneven installation of rollers, uneven clearance between rollers or incorrect locking of adjusting nuts.
2. Material problem of the roller: The surface of the cutting roller will be worn, sunken or uneven if the material is not good or it is used for a long time. These uneven surfaces can cause sliding or twisting between rollers.
3. Material problem: If the cut material itself is uneven or contains impurities, it will lead to jamming, twisting or thread running between the cutting roller and the material.