Cooling of fibres and yarns in melt-spinning,with allowance for their transverse vibration

Conclusions Transverse yarn vibrations intensify yarn cooling as a result of increasing the heat transfer coefficient, and also cause nonuniformity in diameter due to a periodic displacement of the solidification point along the yarn length.A reduction in yarn diameter nonuniformity is possible by increasing the frequency of mechanical vibrations and decrease the diameter gradient along the yarn.The nonuniformity of complex yarn diameter when it undergoes transverse vibrations is less than the nonuniformity of the individual filaments due to their vibration in different phases.Translated from Khimicheskie Volokna, No. 3, pp. 33–35, May–June, 1985.