1. The so-called “yarn” actually refers to the collective name of “yarn” and “thread”. It is defined as follows in clothing materials science:
“Yarn” is an arrangement of many short fibers or filaments into Approximately parallel, and rotated and twisted along the axis to form a slender object with a certain strength and linear density; and “thread” is a strand twisted by two or more single yarns. It can be divided according to the raw materials of yarn
1. Pure spinning yarn
Pure spinning yarn is a yarn spun from a kind of fiber material, such as cotton yarn, wool yarn, linen yarn and silk yarn. This type of yarn is suitable for making pure textile fabrics.
2. Blended yarn
Blended yarn is a yarn spun from two or more fibers, such as polyester and cotton blended yarn, wool and viscose blended yarn, etc. This type of yarn is used in fabrics that highlight the advantages of both fibers. According to the spinning system
3. Worsted yarn
Worsted yarn is also called combed yarn, which refers to yarn spun through the combing process, including combed cotton yarn and combed wool yarn. The fibers in the yarn have high parallel straightness, uniform evenness and smoothness, but the cost is higher and the yarn count is higher. Combed yarn is mainly used as raw material for high-end fabrics and knitwear, such as fine spinning, gabardine, tweed, woolen sweaters, etc.
4. Woolen yarn
Woolen yarn is also called carded wool yarn or carded cotton yarn. It refers to being carded according to the general spinning system without going through the combing process. of yarn. Woolen yarn contains more short fibers, has poor parallel straightness, loose structure, lots of hair, low yarn count, and poor quality. This type of yarn is mostly used as raw material for general fabrics and knitwear, such as woolen fabrics, medium and above cotton fabrics, etc.
5. Waste spinning yarn
Waste spinning yarn refers to yarn spun from textile scraps or mixed with low-grade raw materials. The yarn is of poor quality, soft, uneven, contains a lot of impurities, and has poor color. It is generally only used to weave low-grade fabrics such as coarse cotton blankets, thick terry cloth, and packaging cloth.
2. Strength
1. The strength of yarn depends on the cohesion and friction between fibers. If the fiber shape and arrangement are poor, that is, there are bending, looping, folding, winding, etc. fibers, it is equivalent to shortening the fiber length and weakening the degree of fiber contact. Therefore, slippage between fibers is easy to occur, reducing the Yarn strength.
2. Abrasion resistance
The abrasion resistance of yarn is closely related to the structure of the yarn. In traditional ring-spun yarn, most of the fibers are in the form of spirals. When rubbed repeatedly, the spiral fibers gradually turn into axial fibers. The yarn is prone to lose twist, disintegrate and wear out quickly, so the wear resistance is poor.
3. Twist potential
Twist potential is also an important characteristic of yarn and determines some properties of fabrics, such as the slope of knitted fabrics. Traditional ring-spun yarns and compact yarns are true-twisted yarns with large twist potential, which can easily produce diagonal paths and curling edges in knitted fabrics. Sometimes doubling of threads is required to compensate. </p
