What Is The Effect Of Twisting On The Gloss And Feel Of Functional Yarn?
What is the effect of twisting on the gloss and feel of Functional Yarn?
Overnight, the season changed the cold and warm, the South is already a school early autumn cool, in such a tepid season, special line manufacturers also ushered in a large number of new customers to order twisted Functional Yarn Line, to the guests about the line twist coefficient is large, the fiber tilt angle is larger, shiny poor, feel hard.
Functional Yarn yarn luster and feel depends mainly on the degree of tilt of the surface fiber, the outer fiber twist large, shiny difference, feel on the hard; the other hand, the outer fiber twist small, the gloss is better, soft to the touch. Double strand of Functional Yarn reverse twist, when the strand twist coefficient and the ratio of single yarn twist coefficient is equal to 0.707, the outer twist is zero, that is, fiber parallel to the axis of the line, then the line shiny fine, feel soft.
Process design generally use less than the critical twist coefficient twist, to ensure the strength of the spine under the premise of improving the production efficiency of the spinning frame. According to the above twist on the Functional Yarn yarn properties and the requirements of the yarn properties, the twist factor is appropriately selected, the weft is less process, the tension is small, in order to make twist stability, twist factor can be selected small Some, the general Functional Yarn density warp yarn coefficient than the weft 10% -15%. Knitting yarn generally requires a soft and twist to be stable, twist factor can be selected smaller. The twist factor of the velvet yarn should be smaller to facilitate the maturing. Thin fabric and knitted fabric requirements are slippery, very, cool features, and asked to prevent pilling from the ball, twist factor may be appropriate to choose the larger. Crepe need strong twist yarn. In addition, when the thickness of the spun yarn is different, the twist factor is slightly different, and the twist factor of the fine yarn is larger than that of the coarse yarn. For the strands, the use of reverse twist is the ratio of the twist factor of the strands to the single yarn, the cotton thread is generally 1.2-1.4, the weft is 1-1.2; the knitted hood is 1.3-1.4; Wool with cotton thread 0.9-1.1; combed wool with 1.2-1.8; plush line with 1.8-1.9. Some of the commonly used yarn twist factor in the relevant standards are provided.
The arrangement of individual yarns in different shares. When the number of single yarn and twist single yarn in 5 with the time, the twisting process of each single yarn force evenly to form a hollow structure, Functional Yarn strands of the structure is stable and uniform, Functional Yarn strands of high strength The And when the number of single yarn and twist single yarn in more than 6, one or more single yarn will be in the middle position, twisting process of each single yarn uneven force, the tension outside the single yarn is greater than The tension of the middle yarn, the position of the individual yarns inside and outside will be transferred due to the different tension, the structure of the strands is unstable, and the Functional Yarn strands are formed into a non-uniform solid structure, which affects the strength of the strands. When the twist is high, the non-uniformity of the force of the single yarn increases, so that the Functional Yarn strands may appear in the spiral structure and the yarn quality is reduced. Therefore, the actual production, one and twist the number of single yarn should not exceed five. For more root number merger, to be used twice or multiple merging.
In most cases, the single yarn with Z twist, the yarn is S twist, reverse each other, the fiber arrangement direction and the strands close to the parallel, so that the thread is soft, shiny, twist and structural stability. The twist of the Functional Yarn is preceded by a twist twist, followed by Z and S. The twist twist relationship of each twist has a great influence on the physical properties of the strands.