At first, the appearance of textured yarn was just to increase the bulkiness of fiber by changing the geometric properties of fiber materials, like cotton and fine wool, so that products have plump and warm properties. Through various deformation processes, filament yarn overcomes the shortcomings of filament yarn, has many characteristics of staple yarn (such as expansibility and warmth retention), reduces investment and cost, improves product quality and production efficiency, and expands the use of filament yarn. As early as the 1930s, Smith & Sons carpet company of the United States used stuffing box technology to improve the crimping performance of South American wool. In 1932, heberlein of Switzerland invented the deformation processing method of rayon yarn and obtained the first patent for the crimping deformation of rayon (Applied in 1932 and named nigrila, trade name) In the 1940s, with the industrial production and application of thermoplastic synthetic fibers (nylon and polyester), modified yarns developed rapidly. Because synthetic fiber is thermoplastic, its filament can change the macromolecular arrangement structure in the fiber through "deformation heat setting" under mechanical action, and control the heat setting process to obtain deformed yarn with ideal curling effect. In the 1950s, companies in Switzerland, the United States and Japan used the batch process of twisting, heat setting and untwisting polyamide filaments (classical method). This method can be carried out on any twisting equipment with a "steamer". Disadvantages: many processes, high cost and low productivity. Subsequently, celanise company of Britain proposed two-step deformation and one-step deformation processing method false twist deformation processing method. (false twist texturing), which was produced industrially in the 1950s and gradually replaced the classical three-step deformation processing method. It is characterized by short process, low cost and one-step completion. Polyamide textured yarn produced by Toray in Japan in 1951 by false twist texturing process, trade name: woolie nylon. In 1958, British nylon spinner company developed friction false twister and hoburn company developed the first friction false twister textured yarn machine. In 1959, the British Imperial Chemical Company produced false twist textured yarn (poly (acyl) with high bulkiness and low extensibility by using secondary heat setting (box). DuPont company of the United States pioneered the air modification processing method, mainly processing medium, coarse and special yarns to make decorative fabrics and carpets.

With the withdrawal of Western clothing brands from the Russian market, Russians are increasingly interested in second-hand clothing. Russian "news" reported on the 22nd that since the beginning of this year, more and more Russians have bought clothes, shoes and accessories in second-hand stores. According to statistics, the transaction volume of Moscow credit bank card in such stores increased by more than 2.5 times. Alazarova, a Russian fashion industry expert, said that in the future, second-hand clothing, shoes and other goods will be more popular. Buying clothes in second-hand stores not only saves money, but also conforms to the trend of environmental protection. People feel like "Taobao". Second hand shops are also popular among young people. Volkova, a Moscow citizen, said: "you can buy very high-quality clothes there for very little money." Russian operators have also noticed the booming domestic second-hand commodity market. Russia's ozon e-commerce platform has launched an online classification service for people. Any user can sell or give away their clothes for free on the website.

The high-temperature heat wave swept the world, and the temperature in many places in China broke the historical extreme, and the high temperature lasted for a long time. According to China Weather Network, 68 national stations in China have broken the local historical extreme temperature. The China Meteorological Administration said that as of August 15, the high temperature event had lasted 64 days, the longest since 1961. It is expected that the duration of this regional high-temperature heat wave event will continue to extend and the comprehensive intensity will be further enhanced in the next ten days. In order to meet the basic demand of "ensuring supply", the government has initiated temporary shutdown measures for large power consumers. The affected listed companies in Anhui, Sichuan, Guizhou and other places have issued shutdown announcements one after another, and many companies have announced the shutdown time, as well as the specific affected production capacity and amount.

The high-strength polypropylene twisted yarn has the characteristics of environmental protection, non-toxic, acid and alkali resistance, light specific gravity, small thermal shrinkage, low thermal conductivity, little static storage and almost no moisture absorption. The high-strength polypropylene double twisted yarn has the characteristics of environmental protection and light weight. It is widely used in safety net belt, industrial sling, flexible container bag, geotextile, industrial filter cloth, rope cable, optical cable, high-pressure fire hose, conveyor belt, industrial sewing thread, canopy canvas, polypropylene anti crack fiber, plastic woven bag and other fields. It is a new ideal chemical fiber material to replace polyester, nylon and ethylene fiber, especially suitable for geotextile, sunshade, and other flame retardant / UV resistant industrial products and processes such as Christmas tree

1. it takes plant starch as raw material and is processed with lactic acid, which is similar to the PH value of human body, just like the second layer of human skin. 2. The natural bacteriostasis is the safest. The bacteriostasis rate against Candida albicans, Escherichia coli and Golden Grape balls reaches more than 90%. There is no chemical addition, and the sweat does not smell. It is natural antibacterial. 3. The silk is smooth and anti wrinkle, which is more comfortable than cotton. It is as smooth as real silk. It is not easy to wrinkle after washing. It is iron free, antistatic and easy to take care of. 4 easy to clean, quick to dry and cleaner. 5. the feeling temperature of polylactic acid fabric is higher than that of cotton, and the natural heat insulation is more warm. 6 natural degradation is more environmentally friendly, the production process is pollution-free, and the waste landfill is completely degraded into carbon and water, which is the first place to replace petrochemical fiber.

Cotton fabric Cotton is the most common fabric in the textile field. Of course, there are many kinds of cotton. Cotton treated by different processes also has different characteristics, such as combed cotton, washed cotton, etc. but cotton has good moisture absorption and permeability, soft touch and excellent warmth keeping effect, making the fabric more comfortable after wearing. Silk fabrics Silk fabrics are also common. Silk woven with silk as raw material is also called real silk. Of course, some of them are imitation silk made of chemical fiber. Similarly, there are many varieties. The clothing that can be made is mainly women's clothing. The overall characteristics are light, soft and breathable. Mulberry silk is a relatively precious material. Therefore, this kind of silk is generally only used for the production of high-end clothing, such as evening dress. Woolen fabric As for the types of common textile fabrics, wool is also a common one. The main raw materials are actually made of all kinds of wool, which can be used to make clothes such as suits, coats and coats. The overall feature is good warmth retention. Hemp fabric Fabrics made from hemp fiber are called hemp fabrics. Flax, ramie and ramie are common. The main characteristics of hemp fiber are moisture absorption, air permeability and wear resistance, and its corrosion resistance is also very excellent. At the same time, hemp fabrics can absorb harmful substances in the air and volatilize them. The defect is that they have a rough hand feel, and the overall wearing experience is not as good as cotton fabrics. Chemical fiber fabric Chemical fiber fabrics have good wear resistance, and can be mass produced because of low cost. Common chemical fiber fabrics include polyester, nylon, etc. they occupy a large share in the market by virtue of price advantage and practicality. Chemical fiber is commonly used to produce short sleeves, trousers and other fabrics.

1. to make the pigment have better dispersibility in the product, the pigment must be refined during the production of masterbatch to improve the dispersibility and coloring power of the pigment. The carrier of the special color masterbatch is the same as the plastic of the product, which has good matching. After heating and melting, the pigment particles can be well dispersed in the plastic of the product. 2. it is conducive to maintaining the chemical stability of the pigment. If the pigment is used directly, the pigment will absorb water and oxidize due to its direct contact with the air during storage and use. After the color masterbatch is made, the quality of the pigment can remain unchanged for a long time because the resin carrier separates the pigment from the air and moisture. 3. ensure the stability of the product color. The masterbatch particles are similar to the resin particles, which is more convenient and accurate in measurement. They will not adhere to the container during mixing, and they are evenly mixed with the resin. Therefore, the stability of the addition amount can be guaranteed, so as to ensure the stability of the product color. 4. the health pigments used to protect the operators are generally powdery, which are easy to fly when added and mixed, and will affect the health of the operators after being inhaled by the human body. 5. keep the environment clean. 6. easy to use

Cationic yarn belongs to modified polyester, chemical name: polybutylene terephthalate (elastic polyester), abbreviation: PBT, which is also represented by Cd in the factory. Because ordinary polyester (polyethylene terephthalate) has the disadvantages of low moisture absorption, poor dyeing performance, easy accumulation of static electricity, easy fuzzing, etc., it is usually modified with sulfonate as modifier into modified polyester that can be dyed with cationic dyes, or cationic activator is added before spinning or during spinning to prepare modified polyester. Such yarn is called cationic yarn, which does not need to be dyed at high temperature like ordinary polyester, It can be dyed at room temperature.