DRAW TEXTURING OF CATIONIC DYEABLE POLYESTER YARN

We have studied the effect of texturing parameters such as draw ratio, ratio of disc surface speed to yarn surface speed (D/Y), first heater temperature, and heating contact time on various properties, including tensile strength, crimp characteristics, tight spots, and broken filaments. Dye uptake in terms of K/S and critical dissolution time are examined as a function of draw ratio and heater temperature. Cationic dyeable polyester (CDPET) is compared to normal polyester with respect to texturing behavior, and properties of the resultant yarns are reported.