Textile is a traditional industry that has been around for thousands of years. It can be said that the textile industry has emerged along with the emergence of human civilization. A textile history is also a history of human civilization. China is one of the birthplaces of world civilization, and textile is a Qiba in the history of Chinese civilization. Open the dictionary, you can find that many Chinese characters are accompanied by "纟", such as "organization", "latitude and longitude", the outline of the outline and the intricate "complex", these words are derived from textile.
According to the textile process, the entire textile industry consists of four parts: fiber, fabric, finishing and clothing. Perhaps coincidentally, the English words fiber, fabric, finishing, and fashion of these four words begin with "f". Weaving processes include weaving (also known as weaving), knitting, weaving, and nonwovens, where knitting is divided into warp knitting and weft knitting.
The position of the warp knitting in the textile is as shown in the figure above, which is a knitting process. Knitting is a method of forming a fabric, and the formed fabric is called a knitted fabric. The knitted fabric is formed by encircling the coils, and the knitted fabric can be divided into a warp knitted fabric and a weft knitted fabric according to the direction in which the yarn is looped in the fabric. The names of warp knitting and weft knitting are from woven. Woven is the oldest textile process, and the woven fabric is made up of longitudinal warp yarns and transverse weft yarns. In the warp knit, the same yarn forms a stitch in the warp direction (longitudinal direction) of the fabric; in the weft knit, the same yarn forms a stitch in the weft direction (transverse direction) of the fabric. Only one (or a limited number) of yarns are required to form the weft-knitted fabric, and one or more sets of yarns are required to form the warp-knitted fabric, each set consisting of a plurality of yarns.
Most of the raw materials used for warp knitting are synthetic fibers such as polyester, nylon, spandex, and polypropylene. With the continuous improvement of raw material production technology and weaving methods, natural fibers (cotton, hemp and silk) and man-made fibers have begun to be increasingly applied to warp knitting production. In addition, high-performance fibers such as aramid, carbon fiber, glass fiber, and high-strength high-modulus polyethylene are also widely used in industrial warp knits.
The variety of warp knit fabrics can be divided into tricot warp knit, elastic warp knit, jacquard knit, multi-comb warp knit, industrial mesh warp knit, according to the formation method, structure and properties of the knit fabric. Oriented warp knit, warp knitted spacer fabric, double needle bed plush fabric, and double needle bed tubular fabric. These warp knits are widely used in the fields of clothing, decoration and industry.
With the continuous development of fiber technology and mechanical technology, on the one hand, the grade of warp knitting products has been continuously improved, and the products have been developed in the direction of high-grade and functional; on the other hand, the application fields of warp-knitted products have been continuously expanded. From the traditional clothing and decoration field to the industrial field. Warp knitting products have been widely used in industrial, agricultural, geotechnical, construction, transportation, defense, military, aerospace and medical industries, and have achieved success.
At present, high-grade warp knitted underwear fabrics and warp-knitted industrial textiles are the focus and highlights of the warp knitting industry. Warp knitted underwear fabrics include swimwear fabrics, lace laces and jacquard fabrics, as well as tights and corsets; warp-knitted industrial textiles are currently developing with faster warp-knitted fabrics and warp-knitted spacer fabrics. Biaxial warp knit fabrics in woven fabrics have been widely used in geotechnical, road and construction industries, as well as base fabrics for light box cloth and billboards. Warp knitted spacer fabrics are mainly used as cushioning materials for seats and mattresses. As well as the lining of functional clothing and the cup material of the bra.
After decades of development, China's warp knitting industry has undergone continuous structural adjustments, especially in recent years, the starting point of warp knitting enterprises in emerging regions is high, the product structure is reasonable, the scale benefits are obvious, the research strength of universities and research institutes is injected, and the production and research The combination of China's warp knitting industry has developed rapidly and is gradually becoming the center of the world's warp knitting industry. The Jiangnan University-Karlaya Group Warp Knitting Research Center, established by Jiangnan University and the German KARL MAYER Group, has become an influential warp knitting technical training and research institution in Southeast Asia.
At present, China's warp knitting enterprises are mainly concentrated in the east and southeast coasts, including Guangdong, Fujian, Zhejiang, Jiangsu, Shandong and Shanghai. Among them, more than 300 advanced multi-comb lace machines have been concentrated in Guangdong, which has formed the production and sales base of knitted underwear fabrics in China; Fujian Changle is the largest production and sales market for warp knitted fabrics in China; Zhejiang Shaoxing has concentrated thousands of units. The domestic Jaka warp knitting machine is the center of the Jacquard decorative fabrics in China. The Changzhou, Wuxi, Zhangjiagang and Changshu areas of Jiangsu Province also form the production and sales distribution centers of various warp knitted fabrics; Zhejiang Haining is a high-speed warp knitting machine and The concentrated position of the biaxial warp knitting machine has formed the production base of China's cashmere, spandex fabric and biaxial reinforcing materials, and is becoming a warp knitting production base in China and the world.
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