Yarn twist and direction of knowledge
Twisting is the relative rotation of two sections of the sliver. At this time, the fibers in the sliver that are parallel to the axis of the sliver are tilted into spirals. For short fibers, twisting is mainly to increase the strength of the yarn. The twisting of the filaments can both increase the strength of the yarn and produce some effect. The amount of yarn twisted and the combination of yarn twist and twist in the Fabric have a large impact on the appearance and performance of the product. The indicators of the twisted nature include: the degree of twisting, the twist coefficient, and the direction of twisting. 1 degree The twisted yarn is twisted and twisted into a loop. The number of twists per unit length of yarn is called twist. China's cotton yarn adopts a special number system, that is, the number of turns within the length of 10 cm yarn; combed yarn and chemical fiber filaments adopt the metric system to measure the twist, that is, the number of turns per meter; and There is also an inch system twist rate expressed in inches per inch. 2 twist factor Twist degree can not be used to compare the degree of twisting of different coarse yarns, because the same twist, the thicker slivers are more inclined than the fine slivers. In actual production, the twist factor is often used to indicate the degree of twisting of the yarn. The twist factor is a relative value of the degree of twisting of the yarn in combination with the linear density and can be used to compare the degree of twisting of different coarse yarns. The twist factor can be calculated from the twist of the yarn and the linear density of the yarn. 3 directions  Twisting refers to the direction in which individual yarns in a single yarn appear to twist when the yarn is twisted. It is divided into two types, Z and S. After twisting the yarn twist yarn from the lower right to the upper left corner tends central oblique direction "S" of S-twist consistent with said twisted or pulled; yarn twist from top right to bottom left tendency, and oblique direction " The middle of Z" is the same as Z or backhand. In general, yarns are often used as Z yarns, and strands are used as S yarns. The direction of 4 strands According to successively adding æ» æ» æ»For example, a Z-twisted yarn, primary twist is S-twist, double-twist twisting strands Z, which represents the twist in ZSZ. The twist direction of the yarn has a great influence on the appearance and feel of the fabric. Using the twist direction of the warp and weft yarns and the weave of the fabric can woven the fabrics with different appearances, feels and other styles.  Cushion Pillow,Woven Cushion Cover,Cushion Cover Pillow,Sofa Cushion Pillow SUZHOU JINYULAI TEXTILE CO.,LTD , https://www.jyltextile.com
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