Draw-texturing of microfiber polyester yarn

Three pou yarns of 80/100, 80/48, and 80/34 denier/filament are textured with four variables at five levels. The Box-Hunter statistical experimental design is used to produce thirty-six samples in each case. The effects of texturing variables-draw ratio, disc surface speed to yarn speed ratio (DIY ratio), first heater temperature and heater contact time on tensile properties, crimp characteristics, dye uptake, broken filaments, and tight spots-are studied. First heater temperature and draw ratio have a significant influence on tensile, crimp, and dyeing properties. With increased D/Y ratio, broken filaments decrease but tight spots increase. A proper selection of the D/Y ratio gives acceptable levels of broken filaments and tight spots.