FYI Tester Instrument

  Yarn tension is used to measure the tension of moving or static yarn, thin steel wire, and plastic wire, providing a reliable basis for improving material quality and product performance. Yarn tension Generally speaking, “yarn tension” can be understood as the degree of tension of the yarn after being subjected to external force. In the spinning process, there are tensions in roving yarns and fine yarns. To elaborate further, for example, during the twisting and winding process: The tension of the yarn from the front roller to the yarn guide hook is called spinning tension; The tension of the yarn from the yarn guide hook to the traveler is called balloon tension; The yarn tension from the traveler to the bobbin is called winding tension, etc. The weaving process also involves yarn tension, such as warp tension, weft tension, yarn winding tension, etc. In textile engineering, yarn tension results from work. The objects that exert force and receive force vary depending on different co

  Yarn hairiness refers to the fiber ends or loops that stick out of the main body of the yarn. Since the fibers located on the surface of the yarn are not closely connected with the main body of the yarn, when the yarn is subjected to friction and other external forces, the surface fibers can protrude and become hairy. Yarn hairiness is necessary for certain varieties such as fleece warm fabrics. When the yarn hairiness is more and longer, the fabric can have good wool texture and warmth retention. However, the existence of yarn hairiness will affect the smooth progress of subsequent processes, such as causing unclear opening of the warp during the weaving process, increasing end breaks, and reducing labor productivity. At the same time, it will also have a negative impact on the appearance, feel and use of the finished product. If the hairiness is unevenly distributed, defects such as rungs and stripes will appear on the fabric. Excessive hairiness will cause yarn entanglement during

  We usually divide fibers into natural fibers and man-made fibers. Fiber samples are generally available in three forms: ① Loose fiber; ② A yarn may be contain one fiber type or multiple fiber types; ③ Woven or knitted fabrics may be constructed of yarns from one fiber type of form yarns made with multiple fiber types. There two methods for fiber analysis: qualitative and quantitative. The qualitative test method describes physical, chemical and microscopic techniques for identifying textile fibers found in textile products; Quantitative: the procedures for the determination of fiber composition include mechanical, chemical, and microscopic methods. In this blog, we’re going to introduce microscopic method. The focus of this blog is: Scope of application of microscopic method; Use and function of microscopic method; ​ Classifications of the YG002C series. Scope of application of microscopic method The microscopic procedure for fiber identification and fiber composition are applicable

  As an important production equipment of cotton mill, roving frame belongs to the preparation process from combed sliver to spinning into yarn in the production process. Roving production is the last of the preparatory stages for spinning. The tasks of the roving production  (1) Drafting the sliver to a finer one whose weight per unit length is made to allow a draft at the ring frame in the approximate range of 4 to 12; (2) Using two suspended flyers to inserting few twists to the roving to make it strong enough to sustain the tension in further processing; (3) Winding roving into the bobbin in proper way. Drafting The drafting system is the key to the rubbed roving frame, which adopts 3- roller -2-apron drafting arrangement can make the friction boundary distribution reasonable, the floating zone is small, can effectively control the fiber movement, the total draft multiple is high, and the roving eveness is good. The bottom rollers are fluted steel and the top rollers are covered wi