Yarn hairiness
Spinning yarn hairiness refers to the fiber ends or loops that protrude from the main body of the spinning yarn. The condition of hairiness is complex and ever-changing. The hairiness extending out of the spinning yarn has ends, loops and fibers attached to the surface. It is also directional and highly mobile, as shown in Figure 2-17. Hairiness causes plushness on the surface of the yarn and reduces the appearance of the yarn. Excessive yarn hairiness will affect normal sizing and cause unclear openings and increased end breaks during the weaving process. The amount and distribution of yarn hairiness have a significant impact on the quality of the cloth and the quality of the fabric’s coloring and printing. It will also cause pilling problems during fabric consumption. Therefore, the hairiness index of spinning yarn has become an important current quality assessment index. Our country, Japan, the United Kingdom, Germany, the United States and other countries all use hairiness index to characterize the amount of hairiness. The definition of hairiness index is: on a certain side of the plane view of a single-sided spinning yarn of unit length of spinning yarn, the hairiness index exceeds a certain projection. The cumulative number of hairs in length (vertical distance), unit is root/10m (the value of this indicator is affected by factors such as test length and projection length). Compact spinning in new spinning yarns can well control the hairiness of spinning yarns. Compared with ring-spun yarns, the hairiness above 3mm on the surface of spinning yarns is reduced by 80%.
AAAEHRYJUTUTHYER
Extendedreading:https://www.brandfabric.net/t-c-stretch-interweave-fabric/
