Quantitative Impact of Short Fiber Content on Combed Cotton Rotor Yarn Tenacity Limits
Combing cotton sliver below 5.5% short fiber content raises rotor yarn tenacity ceilings to 18.5 cN/tex by reducing friction slip inside the rotor groove.
Wild Wrapping Fibers
Structural Anomaly
Individual filaments that wrap around the core of a yarn in an uncontrolled or irregular manner occur during the rotor or air-jet spinning process. These fibers do not follow the intended helical path and can create small tangles on the yarn surface. Presence of wild wrapping fibers increases the hairiness and roughness of the finished strand.
Core Engagement
Centrifugal forces or air turbulence can cause some fibers to peel away from the main fiber stream before they are integrated into the yarn. These filaments then catch on the rotating yarn and wrap around it haphazardly. If the number of these fibers is high, the yarn may lose its strength because the core filaments are not properly bound together.
Surface Quality
Visual appearance of the fabric is degraded by the fuzzy texture caused by these protruding ends. In a dyed cloth, wild wrapping fibers can create a speckled effect if they do not absorb the dye at the same rate as the core. Minimizing this defect requires careful adjustment of the air pressure and the cleaning of the spinning nozzles.
Airflow Boundary
Control of the fiber movement depends on the stability of the vortex within the spinning chamber. High production speeds increase the likelihood of filaments becoming disorganized. Maintaining the correct vacuum levels and airflow patterns is the primary method for reducing the occurrence of wild wrapping fibers in high speed spinning.