Several important indicators affecting the spinnability of fibers

Several important indicators affecting the spinnability of fibers

Textile fibers have a number of comprehensive physical properties related to yarn quality and ease of spinning, called spinnability. Under normal production conditions, the better the spinnability of the fiber, the better the yarn quality and the easier the spinning process. The means of spinning differs in the quality of the spun yarn and the requirements for the spinnability of the fiber. Modern spinning on fiber spinnability is assessed based on both product quality and technical and economic indicators. The individual physical properties of the fiber have a mapping of its spinnability.

Length: When the natural fiber is long and the uniformity is good, the yarn has high strength, uniform strip, smooth surface and less hairiness. Length is an important factor in determining spinnability. In addition to the length of the body, the short fiber content has a greater effect on the strength of the spun yarn and the uniformity of the sliver. The length and uniformity of the chemical segment fibers can be controlled. If the length is too long, the yarn quality will not be improved, but the processing will be difficult and the yarn defects will be increased.

Fineness: The fiber is fine, the yarn is dry and uniform, and the strength is high. However, the fibers are too fine, and the fibers in the processing are easily kinked to form neps such as neps and wadding. The fiber is thick, the fabric is stiff, wear resistant and elastic. For coarser natural fibers such as wool and hemp, fineness is the main factor determining the spinnability. Wool fibers are determined by the diameter of their spinnable count. Fineness is also the main basis for wool grade assessment.

Strength: It is the most important factor determining the strength of the yarn. When the other conditions are constant, the higher the fiber strength, the higher the yarn strength.

Impurities and defects: Impurities and defects affect the spinning process and product quality. Although there are impurity removal measures in the spinning process, further splitting of impurities and new defects occur during the impurity removal process. Therefore, the higher the impurity defect content in the raw material, the worse the spinnability.

The sugar in the cotton fiber, the cotton wax, the hemp in the hemp fiber, etc. all affect the spinnability of the fiber, thereby affecting the spinning process and product quality.