Apparatus for producing texturized yarns

摘要

An apparatus for texturizing an initial rapidly melt-spun and preoriented thermoplastic yarn, especially a linear polyester yarn, wherein the initial yarn is subjected to draw-texturizing in a residual stretching stage with heating of the running yarn followed by unilateral or one-sided cooling to provide a temperature gradient over the transverse cross-section of the yarn and in a subsequent relaxation and heat-fixing stage to self-crimp the yarn under differential shrinkage. High yarn speeds are achieved in this draw-texturizing apparatus which is therefore especially useful in combination with rapid melt-spinning units.