(1) COMPACT YARN
It is a new concept of spinning, new technology, which is mainly improved on the spinning frame. The drafting system is different from the traditional spinning frame. After the delivery roller, an additional device for gathering fibers is added, effectively allowing two drafting operations. The roving sliver, which converges before entering the coronal zone, pulls the sliver from the gripping point of the roller drafting system using an air stream and collects on a porous surface. The sliver is compressed by the suction and the nip shrinks. The width of the rovings greatly reduces the height of the spinning triangle. The twisting effect of the cotton yarn increases, the cohesion of the cotton fibers becomes more orderly and tighter, and the number of hairiness of the cotton yarn decreases significantly.
(2) Sirospun revives and spins
China mainland called A, B yarn, recently officially ordered as Siro spinning. Two rovings with a certain spacing are fed on the spinning frame. After the drafting, the front rollers output the two single yarn strips, and the single yarn strips have a small amount of twist due to the transmission of twist. After being further twisted into a yarn that resembles a ply, it is wound on a bobbin. The original design of Siro spinning was aimed at wool spinning. The yarn had: less hairiness, higher strength, and better wear resistance. It can achieve the effect of yarn single yarn weaving to achieve the light and thin wool fabrics, but despite the fact that many similar aspects of the traditional yarns have been greatly improved in the Siro spinning, it is necessary to achieve a certain distance from the worsted single yarns. However, wool spinning also gave up this method. In blended fabrics such as T/C and CVC, this method was used. Because of its dyeing effect, it can produce the twist effect of twisted yarns. It has a good feel and is therefore popular. It has also recently improved hairiness. , Such as the spinning of some hairy fiber, such as rayon, modal, tencel, soy fiber, and even cotton are all produced by this method. The raw material used for the spinning yarn can be lower than conventional ring spinning, and its fabric is more conventional. The ring strand fabric has less hairiness, soft handfeel, good abrasion resistance and good air permeability.
Similar to Siro spinning, it also changes on the basis of Siro spinning. The difference is that a roving is changed to a fine-denier filament, and another roving (hair, cotton or linen, silk, etc.) The ring spinning frame is equipped with a feeding device for filaments, so that the filaments are fed with the normal drawn drafts at an equal distance, and they are merged downstream of the front roller jaws to make up the yarn. Due to the use of a variety of chemical filaments and spun yarns, two-component raw materials are made by twisting, it is also known as two-component spinning or composite yarn. The fabrics of Cyromium Spinning are flexible, anti-wrinkle, drape, breathable, anti-pilling, dimensional stability, and product variations.
Also known as cable spinning, the new technology introduced by the International Wool Bureau is to install a split roller with a number of grooves under the front roller. The function is to use a groove to split the flat bar under the front jaw. In many narrow strips, these narrow strips of fiber rotate around their own twists and turns, with a small amount of twist, and then move downward with the yarn winding motion, and then are twisted and twisted to form a multi-strand-like sliver. As a result of twisted cable yarns, it is also known as cable spinning. Compared to the yarn formed by the twisting of only two weak rayon strands, this yarn, which is made by twisting many weak rayon strands, has higher strength, better wear resistance and more. Less hairiness is best used on pure wool or blended yarns. In fact, single yarns of Solo yarn can be woven directly without sizing.
This spinning method is based on compact spinning and is accompanied by the characteristics of Siro spinning. It is to feed two rovings with a certain spacing on a compact spinning machine. After drawing, after passing through the compact spinning device, similar yarns of the yarn are plied together. The exposed hairiness is collected on the porous surface, and the sliver is further twisted by the suction force and is wound on the bobbin. The hairiness of the yarn is almost non-existent, and the strength is also high. It is most suitable for the mercerized yarn, and the process of singeing can be reduced and the cost can be reduced.
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