Air yarn

(1) Count: The count of yarn is expressed by metric count, which is large, fine, small and thick.

Metric yarn count refers to the number of kilometers of 1kg yarn. If 1kg wool is 18000m long, it is 18 yarns.

(2) Twist of wool yarn and wool yarn: the twist of wool yarn and wool yarn refers to the number of twisting turns per unit length. Twist has twist direction, "S" twist and "Z" twist. Twist generally refers to the number of twists/m. The twist of wool yarn is different with different counts. In order to compare the twist of wool yarn and wool yarn with different counts, the concept of "twist coefficient" is often used.

The choice of "twist factor" is generally more pure wool than blended yarn, more blended yarn than chemical fiber yarn, more short wool content than low short wool content, and more fine yarn count than coarse yarn count.

(3) Strength and elongation of wool yarn and wool yarn:

The tensile strength of wool yarn and wool yarn is called strength. Expressed by the weight of the broken yarn, the length of wool yarn and wool yarn stretched by breaking is called elongation.

The strength of wool yarn and wool yarn has a close relationship with the fastness and production efficiency of the fabric. Strength is the basis of the strength and elongation of the fabric. Therefore, the strength and elongation of the whole wool yarn and wool yarn is an important indicator of quality. Because the strength and elongation directly affect its quality, it is required to have an appropriate strength and elongation, which will make the wool yarn and wool yarn loose and reduce the strength; The strength is too small, the strength is increased, and the wool and wool become stiff. The strength and elongation of wool yarn and wool yarn vary with the raw materials used, the degree of processing, and the arrangement of fibers. If the quality of raw materials is good, the fibers are arranged in order, and the twisting is appropriate, the higher the strength of wool yarn and the better the elasticity will be.