Abstract
The paper provides comparison of properties of 100% cotton yarn with those of two cotton-polyester blended yarns of 50/50 and 20/80 blend ratios. In this regard three types of yarns (i.e. 100% cotton, 50/50 and 20/80 cottonpolyester blends) were produced in the ring frame and for each type two different counts (30 Ne and 40 Ne) were produced. The blending was carried out in the draw frame. During processing, the settings and parameters e.g. spindle speed and twist multiplier were adjusted for optimum performance. After production at each stage (i.e. D/F, Simplex and Ring) samples of draw frame slivers, rovings and yarns were collected and investigated. The properties that were investigated were count, yarn faults, yarn irregularity as U% and strength as CSP. The study shows that, in ring frame it was possible to maintain higher spindle speed and lower twist multiplier for 50/50 and 20/80 blended yarns than 100% cotton yarn. Between 50/50 and 20/80 blended yarns, it possible to maintain higher spindle speed and lower twist multiplier for 20/80 blend than 50/50 bend. It was observed in all cases that as the percentage of polyester increase the U% i.e. the irregularity in the sliver/yarn decreases. It was also observed that yarn faults (IPI) decreased with the increase of % of polyester in the yarns. The yarn strength of 50/50 and 20/80 blended yarns was higher than that of 100% cotton and strength of 20/80 was higher than that 50/50 blended yarn.
Highlights
Blending is the mixing of two different staple fibres
Weaving performance of blended yarn is much better than 100% cotton yarns
This is due to the fact that the strength of blended yarn is better than 100% cotton yarn
Summary
Blending is the mixing of two different staple fibres. Textile fibres are blended for obtaining desirable properties in the yarn [1,2]. Yarn contains more yarn faults exhibits poor appearance, lower strength and poor performance in weaving and will produce low quality fabric [5]. It is serious when a fault appears at regular intervals along the length of the yarn. An irregular yarn breaks more during processing because of stress [6] Other fabric properties such as abrasion, absorbency, reflectance or luster may be influenced by yarn evenness. Influence favorably the behavior of the raw material during processing Blended yarn from natural and man-made fibre have advantage of successfully combining the good properties of fibre components, such as easy care properties These advantages can causes stronger marketing and increased variety of product [10]
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