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What-Is-Cashmere-Yarn

What Is Cashmere Yarn? Features And 8 Processing Principles

What Is Cashmere Yarn?

What is cashmere yarn? Cashmere yarn is a knitting thread for knitting needles produced from cashmere wool. The raw material of cashmere yarn is cashmere, but the practical range of wool and wool is very wide. It can be any raw material, including cotton, wool, acrylic or mohair.

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What Is Cashmere Yarn:Features of Cashmere Yarn

The selection of cashmere products determines its softness, lightness, smoothness, warmth, and coolness. Cashmere sweaters have undergone special milling during the processing process. The surface of the sweaters has a layer of fine velvet, which makes it soft, delicate, slippery, and waxy. If a cashmere sweater is worn next to the body, it will not only have no irritation when it comes in contact with human skin, but it can also make the human body feel “soft, light, slippery, waxy, warm and refreshing”.

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What Is Cashmere Yarn:Classification of Cashmere Yarn

Cashmere yarn is divided into woollen yarn, worsted yarn and semi-worsted yarn according to the production process. Woollen yarn is relatively thick and its count is relatively low, generally from 14 to 32. Semi-worsted yarns are relatively thin and have a relatively high count, generally from 24 to 60. Worsted yarns are relatively thin and have relatively high counts, generally from 28 to 120.

The cashmere knitting thread we commonly use for hand-made needles belongs to roving yarn. Ordinary cashmere sweaters also use roving yarn. In spring and summer ultra-thin cashmere fashion, worsted cashmere yarn is generally used for T-shirts and cashmere underwear. Semi-worsted cashmere yarn is a new product developed in recent years and is being accepted and tried out by knitting factories, and the effect is also good.

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What Is Cashmere Yarn:Processing Principle of Cashmere Yarn

  • Impurity Removal

Spinning is a science that studies the processing of textile staple fibers into yarns. Yarns are usually made of many short fibers of different lengths by splicing, or by twisting long continuous monofilaments. In the process of spinning, first of all, it is necessary to remove the impurities, that is, to carry out the preliminary processing of raw materials (also known as the preparation of spinning materials).

Because the types of raw materials are different, and the types and properties of impurities are different, the processing methods and processes used are also different.  The primary processing methods of raw materials mainly include physical methods (such as ginning), chemical methods (such as hemp degumming and silk scouring), and physical and chemical methods (such as wool washing and decarbonization).

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  • Releasing

In order to process the disordered and closely connected fibers into the smooth yarns with certain requirements, it is necessary to change the block fiber into a single fiber state, remove the transverse connection of fiber raw materials, and establish a firm longitudinal connection between the head and the tail. The former is called the release of fibers, and the latter is called the aggregation of fibers.

The release of fibers is to completely remove the transverse connection between fibers, but the damage of fibers must be reduced as much as possible. The aggregation of fibers is to make the released fibers reestablish an orderly longitudinal connection. This connection is continuous, and the fibers in the assembly should be evenly distributed and have certain linear density and strength at the same time. Fiber assembly, also need to add a certain twist. The assembly process is not completed at one time. It can only be completed after carding, drafting and twisting.

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  • Opening

Opening is to tear large pieces of fibers into small pieces and small fiber bundles. Broadly speaking, the degumming of hemp is also an opening. As the opening action progresses, the connection force between the fibers and the impurities is weakened, so that the impurities are removed and the fibers are mixed. The opening effect and the removal of impurities are not completed at one time, but gradually achieved through the rational configuration of tearing, striking and segmentation.

  • Carding

The carding function is to further loosen the small pieces and small bundles of fibers into a single state by a large number of dense needles on the carding machine, thereby further improving the loosening of the fibers. After carding, the transverse connection between fibers is basically eliminated, and the effect of impurity removal and mixing is more sufficient. However, a large number of fibers are curved and have hooks, and there is still a certain horizontal connection between each fiber.

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  • Combing

The combing function of the comber is to use the comb to perform more detailed combing under the state of holding both ends of the fiber. Combing machine processing can eliminate short fibers and small imperfections below a certain length, and promote the fibers to be more parallel and straight. Chemical fibers are generally not processed by a comber because of their neat length, less impurities, and good straightness and parallelism.

  • Drafting

The combed sliver is stretched and thinned until it gradually reaches the predetermined thickness. This process is called drafting. It laid the foundation for the firm establishment of regular end-to-end connection between fibers. However, drafting will cause unevenness in short segments of the yarn. Therefore, it is necessary to configure reasonable drafting devices and process parameters.

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  • Twisting

Twisting is to twist the whisker around its own axis, so that the fibers parallel to the axial direction of the whisker are spiraled, thereby generating radial pressure to fix the longitudinal connection between the fibers.

  • Winding

The semi-finished product or finished product is wound into a certain form to facilitate storage, transportation and processing in the next process. This process is called winding. The winding process should be carried out continuously on the basis of not affecting the output and quality of the product. Efforts should be made to achieve continuous production between the various procedures to minimize the quality problems caused by the winding process. In short, the spinning process generally includes raw material preparation, opening, carding, impurity removal, mixing, drafting, merging, twisting and winding. Some effects are achieved after many iterations.

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