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What does yarn twist mean?
2023-07-14
As a leading polyester yarn manufacturer, Sinrylion has some insights and ideas on yarn twist to share with you. Yarn twist means that in order to make the yarn have certain physical and mechanical properties such as strength, elasticity, elongation, luster, hand feeling, etc., the cotton yarn must be changed by twisting, and the yarn twisting is realized by the fiber structure. There is a relative angular displacement between them, so that the originally straightened and parallel fibers are inclined to the yarn axis to change the yarn structure. During the twisting process, the width gradually shrinks, and the two sides are gradually folded and drawn into the center of the yarn line, forming Twist triangle, in which the width and cross-section of the slivers change, from flat ribbons to cylindrical yarns.
Twist affects the strength, rigidity, flexibility and shrinkage of the yarn. With the increase of yarn twist, its strength is increased, but the twist can not exceed a certain value, otherwise its strength will decline, this certain value is called the critical twist of the yarn. The critical twist of yarns of different raw materials is not the same. Generally, under the premise of meeting the strong requirements, the smaller the yarn twist, the better, because the increase of twist will make the yarn feel harder, the elasticity decreases, and the shrinkage increases, which is also the reason why the filament yarn is generally not twisted or less twisted.
In addition, twist also has an effect on the volume weight and diameter of the yarn, and the twisting effect increases the tightness of the yarn. In a certain range, the volume weight of the yarn increases with the increase of twist, and the diameter of the yarn decreases with the increase of twist, so that the coverage and comfort of the fabric change.
Yarn twist should be selected according to the different use of the fabric.
The warp needs to have a higher strength, and the twist should be larger;
Weft and knitting yarn should be soft, and the twist should be small;
Yarn for weaving and knitting pile fabrics, the twist should be small to facilitate pile;
Twist affects the strength, rigidity, flexibility and shrinkage of the yarn. With the increase of yarn twist, its strength is increased, but the twist can not exceed a certain value, otherwise its strength will decline, this certain value is called the critical twist of the yarn. The critical twist of yarns of different raw materials is not the same. Generally, under the premise of meeting the strong requirements, the smaller the yarn twist, the better, because the increase of twist will make the yarn feel harder, the elasticity decreases, and the shrinkage increases, which is also the reason why the filament yarn is generally not twisted or less twisted.
In addition, twist also has an effect on the volume weight and diameter of the yarn, and the twisting effect increases the tightness of the yarn. In a certain range, the volume weight of the yarn increases with the increase of twist, and the diameter of the yarn decreases with the increase of twist, so that the coverage and comfort of the fabric change.
Yarn twist should be selected according to the different use of the fabric.
The warp needs to have a higher strength, and the twist should be larger;
Weft and knitting yarn should be soft, and the twist should be small;
Yarn for weaving and knitting pile fabrics, the twist should be small to facilitate pile;
Thin and cool crepe fabrics require smooth, stiff and cool characteristics, and the twist of the yarn should be larger.
Welcom to contact us to learn about Sinrylion Polyester Twisted Yarn Manufacturer, we have a great variety of yarns.
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