Jet vortex spinning is a new technology in the field of spinning. China has introduced jet vortex spinning equipment from abroad for more than 10 years, and the production scale is increasing. Recently, we have conducted on-the-spot understanding of more than 20 jet vortex spinning enterprises in Zhejiang, especially regarding the production variety, sales, profitability and related issues, and exchanged and discussed with the company leaders and related personnel, feeling the development of jet vortex spinning. There are several issues that deserve the attention and attention of the industry.
Concern 1: Capacity development is fast, but the sales situation is not optimistic
According to relevant information, during the “Twelfth Five-Year Plan†period, China's jet vortex spinning capacity developed rapidly, and the number of equipment ownership increased from 93,600 in 2011 to 135,000 in 2015. In 2016, it estimated that more than 150,000 head vortexes The spinning equipment has been put into operation, which is equivalent to the production capacity of 3 million spindles of ring spinning.
According to statistics, at present, 24 spinning enterprises in Zhejiang have more than 600 jet vortex spinning machines put into production. From the analysis of production varieties, about 70% of the machines are mainly used to produce viscose yarn and T/R natural yarn, and there are few varieties of production and narrow use fields.
From the national analysis, the yarn produced by jet vortex spinning only accounts for 3% of the total yarn volume (calculated according to the national production capacity of 100 million spindles), but because most companies currently produce viscose ray yarn, there has been an oversupply. The situation, the price is constantly lower, taking the viscose 30S yarn as an example, the current viscose fiber is about 15,000 yuan per ton, and the price of the yarn is only 18,000 yuan / ton, or even lower, so that the processing cost per ton of yarn is less than 3,000 yuan. , lower than the same size ring yarn. Therefore, the current production of the main color viscose yarn-based enterprises, have appeared unprofitable and loss, the situation is more severe. If the product structure adjustment is not accelerated, the severe situation will be difficult to change in the short term.
Concern 2: Although there are many advantages, there are still some drawbacks
Many well-known, jet vortex spinning technology has the advantages of short spinning process, high production efficiency, labor saving, and less hairiness. However, after more than 10 years of production practice, jet vortex spinning technology has also exposed the following drawbacks: Jet vortex spinning is 10% less powerful than ring spinning. From the test data, the elongation at break of the yarn is also lower than that of the ring spinning; the second is that the uniformity of the yarn into the vortex yarn is slightly worse than that of the ring spinning; the third is that the jet vortex spinning requires more raw materials than the ring. The spinning is high, so its production variety is not as wide as the ring spinning. In addition, the consumption of raw materials for jet vortex spinning is also about 10 kg/ton more than that of ring spinning, because the spinning break rate is higher than that of ring spinning.
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From the analysis of the above advantages and disadvantages, it is indicated that the jet vortex spinning technology can not completely replace the ring spinning, and can only be supplemented by ring spinning in a certain field, and it should have objective analysis and evaluation.
Focus 3: Innovative jet vortex spinning yarn is the current and future priority
The understanding of the Zhejiang jet vortex spinning production enterprise shows that as long as efforts are made in the development of varieties and applications to avoid homogenization competition between enterprises and ring spinning yarns, jet vortex spinning enterprises can obtain more than ring spinning enterprises. Better economic benefits. The experience of these companies is to keep up with the changes in market demand and continuously develop new vortex spinning yarns. From single knitting yarns to home textiles, decorative yarns and wool knitting yarns, it is an important way to improve the economic benefits of enterprises. At present, the market has developed five new types of jet vortex spinning new yarns with good feedback.
The first is to innovate and develop color spinning. At present, it has developed three types of hemp gray series color spinning, color series color spinning and multi-fiber blending series, especially in the development of multi-fiber blended yarns. The disadvantage of low intensity.
The second is the development of functional yarns using jet vortex spinning technology. As people's demands for wear continue to increase, the use of jet vortex spinning technology to develop a variety of functional yarns should be a hot spot.
The third is the development of jet vortex spun yarns using a variety of natural fiber blends. The expansion of various types of natural fibers in jet vortex spinning can not only increase the added value of the product, but also change the use of viscose in jet vortex spinning. At present, Zhejiang enterprises have developed pure cotton jet vortex spinning with combing technology, and the spinning count is up to 70 British, which is a major innovation of jet vortex spinning technology.
The fourth is to develop the yarn for decorative fabrics by jet vortex spinning technology. Zhejiang jet vortex spinning a lot of manufacturers have developed a thick branch of pure polyester yarn, flame retardant acrylic blended yarn and other varieties, praised by the market.
The fifth is to develop wool knitting yarn by jet vortex spinning technology. In recent years Zhejiang has a small number of jet vortex spinning enterprises, using innovative technology to develop jet vortex spinning yarn wool (cashmere) and acrylic, nylon and Tencel blend of wool knitting on the MVS textile machinery, but also by sweaters Processing companies and users praise.
Concern four: here to the development of multiple raw materials, multi-variety, multi-purpose
From the above analysis of the development trend of new yarns for jet vortex spinning, China's jet vortex spinning enterprises must change the current situation of poor sales, and must speed up the pace of product structure adjustment, change the situation of using single raw materials, few varieties of production, and limited use. Developed with a variety of raw materials, multi-color fiber, multi-variety and multi-purpose. The following suggestions are proposed to discuss with colleagues.
First, we must adhere to the production model of small batches and multiple varieties, take the road of differentiation and specialization, and avoid the homogenization competition with ring spinning yarns.
Second, it is necessary to adapt to the production mode of small batches and multiple varieties, and it is necessary to transform the front spinning equipment. The domestically produced carding and drawing machine has made rapid progress in recent years, and has the advantages of high cost performance and good adaptability to products. Therefore, it is recommended that the front spinning equipment of jet vortex spinning can be made mainly by domestically produced equipment.
The third is to speed up the pace of localization of spare parts and reduce maintenance costs. There are many wearing parts on the jet vortex spinning equipment, most of which rely on imports . Because of the high price and increasing the cost of machine material consumption, it is also a problem that needs to be addressed in the development.
The fourth is to improve equipment production efficiency and yarn quality , and reduce raw material consumption. Jet vortex spinning enterprises must be equipped with air conditioning and dust removal equipment to make the temperature and humidity of the workshop meet the production requirements. At present, individual companies do not install or use air-conditioning equipment, resulting in increased production interruptions, reduced efficiency, and increased consumption, which is not worth the candle.
The fifth is to develop industry standards and group standards in a timely manner around the development of vortex spinning products. At present, there are only three standards (pure viscose yarn, polyester/viscose yarn and viscose yarn), and there are urgently needed standards for multi-fiber blended yarn, cotton-polyester (viscose) blended yarn and decorative yarn. .
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