Main Factors Affecting Yarn Strength

1）The performance of fiber The higher the fiber strength, the lower the linear density. And the longer the length, the higher the yarn tenacity. If the chemical crimp is small, which will increase the fiber adhesion force, thus improving the yarn strength. 2）Yarn structure The yarn strength can be improved when the fiber is transferred in the direction of yarn radius and the structure is uniform. Yarn strength is reduced when the fibers are arranged in layers, or when the fibers are folded, flexed, or hooked. Yarn strength increases with the increase of twist below the critical twist, and decreases with the increase of twist after the critical twist is exceeded. Pure cotton yarn is easy to break in details and large knots. 3）Atmospheric temperature and humidity  Yarn strength decreases as temperature increases. With the increase of relative humidity, the yarn moisture recovery rate increases, and the yarn strength of cotton and flax increases, while the yarn strength of wool and artificial fiber decreases. Therefore, the strength test should be carried out after equilibrium at the specified standard state (temperature 20 ℃, relative temperature 65%), otherwise the measured strength should be corrected for temperature and moisture regain.

What About Yarn Dyeing

In the process of textile production, the timing of dyeing is affected by several factors. From an economic point of view, dyeing can be carried out before the production process of weaving, which minimizes costs. The yarn is dyed before weaving, and the color pattern can be improved later in weaving if a better fastness dye is used. Yarn dyed products are generally considered to be bulkier and feel better than fabric dyed products. This may be because when the skein is suspended on the rod of the dyeing machine, it is free to relax sufficiently without any restriction, not only allowing the yarn to completely bulk, but also allowing the yarn to untwist freely to achieve the equilibrium twist, thus eliminating the tension in spinning. Another form of yarn dyeing is cheese dyeing. Technically, it used to be thought that only skein dyeing could produce a satisfactory product, but this traditional view is changing with the advent of cheese dyeing. Generally speaking, yarn dyeing is more expensive than fabric dyeing. While it has the advantage of faster lead time, so it is easier to adapt to the change of popular csolor, at the same time to meet the needs of small batch. In addition, the yarn dyeing machinery is relatively simple, thus more economical in maintenance.

China to rectify “campaign-style” carbon reduction of textile industry upgraded

Last year, the Chinese government has officially announced that China aims to reach peak emissions before 2030 and achieve carbon neutrality before 2060, which means that China only has 30 years for continuous and rapid emissions cuts. To build a community of common destiny, the Chinese people have to work hard and make unprecedented progress. In addition, the China Ministry of Ecology and Environment has issued the draft of "2021-2022 Autumn and Winter Action Plan for Air Pollution Management" in September. This autumn and winter (from October 1, 2021 to March 31, 2022), the production capacity in some industries may be further restricted. Some areas supply 5 days and stop 2 days in a week, some supply 3 and stop 4 days, some even just supply 2 days but stop 5 days. These actions will result in a terrible increase of all costs, from raw materials to packing materials, from labor cost to ports operation costs. Customers should prepare for 2 things: prices will be increased and delivery time will be prolonged.  

A "Bottleneck" Industry - Industrial Gas

On the afternoon of March 11, the Ministry of Industry and Information Technology and other ministries and commissions held a coordination working meeting on the industrial gas "bottleneck" problem, systematically combing the status quo of industrial gas in China, and coordinating to promote the solution of the "jam neck" problem that restricts the development of the industry. Industrial gases, known as the blood of industry, are almost involved in every aspect of human life. The domestic market space is about 150 billion yuan, with an annual compound growth rate of 8%-9%. And China's industrial gas field is mainly controlled by foreign enterprises. In 2017, the share of global industrial gas leaders such as Air Chemical, Air Liquide Group, Taiyo Nippon Sanso and Linde Group in the domestic market was as high as 88%. Domestic substitution is urgent.     HSCC actively gives full play to the strength of private enterprises, according to the general secretary of the "big cycle, double cycle" new development pattern requirements, to solve the "bottleneck" project, and fill the industry gap. In 2019, the Group acquired Air Liquide (Fuzhou) Co., Ltd., a wholly-owned subsidiary of France's Air Liquide Group, and re-named it to Fujian Heseng Gas Co., Ltd (HGC). HGC adopts the world's advanced patented technology and production process to provide stable and high-quality industrial gas raw materials such as hydrogen, synthetic ammonia and nitrogen to the market. Since 2020, HSCC took advantage of the enterprise, with" double main business "model, carried out industry chain vertical integration and horizontal development across the region, actively push forward to fill the domestic blank of electronic grade chemicals and special gas, lithium battery electrolyte additives such as" their "project construction, and introduced a batch of industry niche" little giant "enterprises, build fine chemical project of industrial cluster. HSCC has launched a decisive battle in the field of "bottleneck" and promote high-quality economic development. 1.    What are industrial gases       In industry field, the gaseous products under normal temperature and pressure are collectively referred to as industrial gas products. According to the different preparation methods and application fields, industrial gases can be divided into bulk gases and special gases. Bulk gases mainly include air separation gases such as oxygen, nitrogen and argon and synthetic gases such as acetylene and carbon dioxide. Special gases mainly include electronic gases, high purity gases and standard gases. Bulk gas production and sales are large, but the purity requirements are not high. Although the production and sales of special gases are small, according to different uses, there are extremely strict requirements on the purity or composition of different special gases, the maximum allowable content of harmful impurities, the packaging, storage and transportation of products, etc., which belong to high-tech and high added value products. 2.    China's industrial gas is "bottle-necked"       As an industrial segment industry, industrial gases are widely used in traditional industries such as steel and petrochemicals, as well as growing industries such as electronic semiconductors, medical treatment and food. "Precisely speaking, what 'stuck' is' electronic bulk gas' and 'electronic special gas'."As for the problem of industrial gases "bottle-necked", Bai Jiu, the former general manager of the electronics division of Linde Group in China, said in an interview with Shanghai News that China's non-electronic gases have certain international competitiveness, but due to factors such as technology and equipment manufacturing capacity, the competitiveness of domestic electronic gases is still relatively weak. Watt gas related personnel said that industrial gas "bottleneck" is mainly reflected in large-scale integrated circuits, new display panels and other high-end areas, especially in the field of integrated circuits. 3.    Why China's Semiconductor Industry Is "bottle-necked" by Electronic Gas       Special gases have high technical barriers. The production process involves synthesis, purification, mixture preparation, filling, analysis and detection, gas cylinder treatment and other technology, the customer's requirements for purity and precision are much higher than bulk air separation gas. At present, China can only produce 20% of the special gases needed for IC production, and the rest rely heavily on imports. At present, the special gases that domestic enterprises can mass produce are still mainly concentrated in the cleaning, etching, lithography and other processes of integrated circuits, and only a few varieties of special gases in doping and deposition processes have made breakthroughs. Special gases have higher certification barriers. For example, if a wafer manufacturer produces 50,000 wafers per month on an 8-inch wafer pr