Effect of yarn structure on cover factor in woven fabrics

Abstract

This experimental work investigates the effect of yarn structure on cover factor of fabrics at different weft settings by the light transmission method. To analyze the effect, two different types of fabric set have been prepared by using airjet and rotor yarns of the same linear densities in the weft direction and keeping the warp yarn unchanged. For each fabric, weft setting has been changed gradually. Cross-sectional diameter of yarn and its packing density has been analyzed to find out the differences between both yarn structures. The effective yarn diameter and packing density have been found to be almost same for both yarns while the hairiness is found to be higher in airjet yarn as compared to rotor yarn. Yarn cross-section in the fabric has also been analyzed to examine the deformation (flatness) in yarn, which was relatively higher in airjet yarns. At the same weft setting the cover factor (CF) of fabric woven by air jet yarn is found to be higher than fabric woven by rotor jet yarn, and this difference decreases as the weft setting increases in fabric. Correlation analysis results show the relation between the cover factor and weft setting. While analysis of variance results show statistically significant effect of spinning system (airjet and rotor yarn) and weft setting on the cover factor of woven fabric.

Effects of Loom Speed, Insertion Air Pressure, and Yarn Type on Fabric Air Permeability: Case Study on Air Jet Loom

“…Scholars from various disciplines have agreed on this premise [36,37]. Moreover, ring-spun weft yarn has more fringed fbers that fll the area between Rotor spun yarn Ring spun yarn the yarns in the fabric and so prevent the passage of air through it, as further supported by Ahmad et al [38]. On the other hand, the rotor yarn surface has a wrapper fber that connects the bulk of the fbers to the body of the yarn.…”

Blending effect of rotor spun yarn with different blending methods

“…The color of the fabric woven with the color blended yarn is natural and gentle, showing a strong three-dimensional feeling and being deeply loved by consumers. The production of mixed yarns has many varieties and can have small batches, and is very popular among small and medium-sized enterprises [1][2][3]. Combining the new spinning technology with the production of blended yarns and exploring more suitable production processes and methods are the development directions of color spinning.…”