Properties and processibility of compact yarns

Abstract

The effect of winding speed on the properties<span style="font-size:14.0pt;font-family:HiddenHorzOCR;mso-hansi-font-family:" times="" new="" roman";="" mso-bidi-font-family:hiddenhorzocr;color:#6c6c6c"=""> of ring and compact yarns produced using the same mixing, preparatory process parameters and spinning parameters has been studied. Both wet and dry splicing techniques were used during winding to study the structure and properties of the spliced portions of the yarns. The dyeing behaviour of ring and compact yarns has also been studied to relate the structure of these yarns to their dyeability. It is observed that the compact yarn exhibits higher packing density and tenacity but lower CV% of the tenacity as compared to similar ring yarn . The compact yarn also has lower number of thick places, neps, short hairs and long hairs; the short and long hairs however increase rapidly after winding and the rate of increase in hai riness is higher than that in case of ring yarn. Although the strength of the spliced portions of compact yarn is higher, the ratio of splice strength to yarn strength is lower. The fabrics made with compact yarns show higher <i>K</i><i>/S</i><i> </i>values than the fabrics made with ring yarns.

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