Effect of Twist Degree on Yarn Diameter and Density Composite Fabric Information

The degree of twisting of the yarn not only affects the appearance quality such as diameter and gloss of the yarn, but also affects the inner quality and feel of the yarn such as strength, elasticity, elongation and so on. Therefore, the determination of yarn twist degree is also particularly important in textile technology. (1) Effect on yarn diameter and density: Twisting makes the fibers in the single yarn denser, reducing the gaps between fibers, increasing the density of the single yarn, and reducing the diameter. When the twist coefficient increases to a certain value, the compressibility between fibers in a single yarn becomes very small, and the density does not change much as the twist coefficient increases. On the contrary, the diameter of the yarn may increase slightly because the fibers are too tilted. The diameter and density of the strands are also related to the twist direction of the strands and single yarns. When the twist direction of the strands is the same as that of the single yarn, the relationship between the twist coefficient, density and diameter is similar to that of the single yarn. When the twist direction of the strands is opposite to that of the single yarn, and the twist coefficient of the strands is small, the density of the strands will decrease and the diameter will increase due to the untwisting effect of the single yarn; when the twist coefficient reaches a certain value, the density of the strands will decrease and the diameter will increase. The density of the strand increases as the twist coefficient increases, while the diameter decreases as the twist coefficient increases. As the twist continues, the density does not change much, while the diameter gradually increases.
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