1. The spun tube yarn has weak twist yarn, and the bobbin may be broken during high-speed unwinding.



2. Slubby yarn is easy to break when the package is unwound at high speed.



3. There is something wrong with the quality of the kink, and the bobbin may be broken during high-speed unwinding.



4. For yarns with extremely short fibers, the bobbin may be broken during high-speed unwinding.



5. When overlapping bobbins occur, bobbins may be broken during high-speed unwinding.



6. Due to poor mechanical condition or wrong process setting, the bobbin is disordered in yarn layer, worn, out of loop, stuck, too hard or too soft.



7. There are too many small details in the spinning tube yarn, and the bobbin may be broken during high-speed unwinding.



8. If the self-winding speed is too high, the bobbin may be broken during high-speed unwinding.



9. The bobbin may be broken in high-speed unwinding due to missing cutting due to electric cleaning.



10. Due to flying flowers, yarn ends and neps attached to the inside of the package, the package may be broken during high-speed unwinding.



11. Due to the operator's mistake, the bobbin may be broken during high-speed unwinding.



12. Due to rough handling and packaging, the bobbin may be broken during high-speed unwinding.



13. When the bobbin climbs, the bobbin may be decapitated during high-speed unwinding.



14. Due to excessive humidification of the bobbin, the bobbin may be broken during high-speed unwinding.

15. The bobbin produced by high twist yarn may be broken during high-speed unwinding.



16. Because the single yarn strength of spun yarn is too low, the bobbin may be broken during high-speed unwinding.