Combing combed sliver past critical migration limits triggers tensile decay by reducing radial fiber migration and core friction inside the rotor groove.
Combed rotor yarn tenacity drops 0.35 cN/tex per 1% short fiber increase, requiring combed sliver SFC by weight below 8.0% for Ne 30 strength targets.
High heater temperatures mobilize PET cyclic trimers, driving surface crystallization that glazes texturing discs and requires strict HPLC wash thresholds.
Spin finish deposits inside vortex chambers shift fluid boundary layer friction, increasing yarn hairiness and degrading tenacity during high-speed runs.
Localized cotton rope hydrolysis kinetics depend on core capillary ion concentration and localized temperature dynamics rather than bulk liquor pH.
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.
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