Textured yarn and method and apparatus for producing the same.

摘要

A textured yarn suitable for weaving a fabric having an improved width shrinkage is provided by a simultaneous draw-texturing process of a partially oriented polyethylene terephthalate (PET) filament. During the draw-texturing process, the yarn delivered from a main heater is adjusted to maintain a yarn temperature not less than 80°C which corresponds to a glass transition temperature of PET prior to be introduced into a false twister, thereby both a crimpability and a sonic velocity of the resulted yarn are improved. A fabric woven therefrom has a good bulkiness as well as a good resiliency. Further, according to the same principle, a textured yarn having crimp unevenness suitable for producing a fabric having a surface contour is provided by varying the yarn temperature prior to be introduced into the false twister in a range between 80°C and 160°C. The latter yarn has no tight spots therein and results in naturally looking fabric