Textile belts and cord fabrics; the third category is non-woven fabrics. Industrial non-woven fabrics have already risen in Europe and the United States, but our country started late due to various reasons.
With the advancement of science and technology and the changes of the times, the industrial non-woven fabric industry in China has developed rapidly in recent years. Adapted to produce a variety of industrial non-woven fabrics complete sets of equipment also came into being, and gradually improve, improve and enhance. These non-woven equipments for industrial use not only supply domestic products but also export to foreign countries and have a certain reputation.
In 1980, the No.4 National Cotton Factory in Changzhou, Jiangsu Province, imported a non-woven fabric production line from Europe for the first time. Through combing, messy netting, and then bonding, consolidation and web formation, the products produced were mainly used for clothing. Chest lining, collar lining or cotton wool, quilts. This production line caused a sensation at the time. Since then, domestic textile machinery manufacturers have begun to produce combing and bonding processes for nonwovens equipment. Later, some domestic textile manufacturers imported from Taiwan a set of hygiene products production lines that combed, laid and then melted into cloth through hot air. Through the continuous improvement and improvement in the production process, a non-woven fabric of hot air was formed. A set of equipment. Non-woven fabric manufacturing enterprises and textile machinery manufacturing enterprises also have the same process as the first half of this equipment, and the latter half of the non-woven fabric production line equipment that needs to be consolidated into a net by a hot rolling mill has been developed, produced and further Industrialization has been achieved.
With these reference models, China has entered a period of rapid development of non-woven fabrics. Henan Gongyi Spunlaced Nonwovens Factory imported a spunlace nonwoven fabric production line from Europe earlier. The flow of the production line is: the raw materials are weighed, mixed, combed, laid, and then consolidated into a net after the spunlace process, and then dried and rolled into cloth. The products produced by this production line can be used in industries such as industry and construction. After years of digestion and absorption and technical breakthroughs by Zhengfang Machinery, Spunlace curing has finally achieved localization.
In the first half of the process of this equipment, the weighing, mixing, storage, and carding of fibers are the strengths of our country's cotton-spun carding processes and equipment, while the fine-sweeping and carding processes such as laying, hydro-entangling, and roll-cutting are still needed. Research. For example, Xilin, Doffer, Shuangxilin and Shuangdaofu of wide carding machines require high precision and the tolerances are only a few wire tolerances; the Spunlace machine is the key to the production line. This equipment is equipped with various forms. Spunlace needle boards, which are all made of special materials; water pinholes are machined from precision machine tools, and the winding and slitting equipments have to be carefully tackled after fabric drying. In addition, the spunlace process is mainly based on the pressure of water, which is injected instantaneously. After being rebounded and consolidated into a net, the water is filtered and reused. These complete sets of equipment have yet to be made domestically.
As carding technology matures, the technology of acupuncture consolidation into cloth gradually develops. Acupuncture machines are more difficult to manufacture and have more varieties, including extra-wide pre-needling, upper acupuncture, lower acupuncture, and flower acupuncture. Needle acupuncture needles are special and critical; The tank, crankshaft processing, speed frequency, anti-vibration, etc. have higher requirements. The manufacture of these equipments is achieved through domestic research and development.
The birth of complete sets of equipment for the tufted carpet production line was at the beginning of reform and opening up. At the time, the carpet factory of Beijing Yanshan Petrochemical Plant imported a tufted carpeting equipment from Europe. The raw material of polypropylene was spun into flat yarns. After drafting, it became the warp and weft at the bottom of the carpet. It was widened by Sulzer Rutti. The web weaving machine woven into the carpet base fabric, using BCF carpet wire, and then tufting machine tufting, shearing, back gluing, trimmed into a carpet. We also carried out research and development on this equipment. However, key hosts such as tufting machines and backing gluing machines have made breakthroughs. Military enterprises and state-owned textile machinery companies have participated in the research, but ultimately they have no effect. end. In recent years, Shanghai Donghua University adopted the combination of production, education and research to complete the design and manufacture of tufted carpet equipment, and cooperated with carpet manufacturers in Zhejiang and Jiangxi to realize the industrialization of tufting equipment. It has achieved very good results.
Spinning web technology has also developed rapidly over the years. In the spring of 1990, I went to the Netherlands with the Deputy Minister of the National Standard of the People's Republic of China and the Aksu Company in the Netherlands saw for the first time that they used polypropylene slicing as a raw material and used a spunbond process to produce a production line for geotextiles. This company not only produces non-woven products, but also has a relatively complete system of scientific research, production, testing and experimentation. Later, the Hongda Research Institute, Zhengzhou Textile Machinery Factory and Shaoyang Second Textile Machinery Factory successively developed spunbonding, melt-blowing, and spunbonding and meltblown spinning combined into a net, and hot-rolled consolidated into cloth. Then roll slitting the complete set of equipment. This set of technology and equipment has a short process, high speed, high output, wide product use and rapid development. After many years of development, spinning into web consolidation into cloth technology and different sets of equipment manufacturing technology, China has mastered and realized industrialization. At present, the research and development of the two-component composite spunbond process nonwoven fabrics and equipment of the Shanghai Textile Science Research Institute is relatively mature. The Beijing University Hongda Research Institute, Dalian Synthetic Fiber Research Institute and other units developed the meltblown process and non-woven fabric production process technology and equipment. They are also mature and have their own intellectual property rights and have realized industrialization. At present, China's spunlaid nonwoven fabrics consolidated into fabrics accounted for 46% of the production volume, which exceeds the proportion of combed webs consolidated into cloths by 42%.
Industrial nonwovens have gradually expanded from the original textile and apparel industry to the current medical, health, health care, highways, railways, airports, rivers, construction, agricultural cultivation, fisheries, aquaculture, filtration, aerospace industry And other fields, and formed a new industrial non-woven fabric industry. The variety of non-woven fabrics used in industry is endless, and it is an ever-growing industry.
With the advancement of science and technology and the changes of the times, the industrial non-woven fabric industry in China has developed rapidly in recent years. Adapted to produce a variety of industrial non-woven fabrics complete sets of equipment also came into being, and gradually improve, improve and enhance. These non-woven equipments for industrial use not only supply domestic products but also export to foreign countries and have a certain reputation.
In 1980, the No.4 National Cotton Factory in Changzhou, Jiangsu Province, imported a non-woven fabric production line from Europe for the first time. Through combing, messy netting, and then bonding, consolidation and web formation, the products produced were mainly used for clothing. Chest lining, collar lining or cotton wool, quilts. This production line caused a sensation at the time. Since then, domestic textile machinery manufacturers have begun to produce combing and bonding processes for nonwovens equipment. Later, some domestic textile manufacturers imported from Taiwan a set of hygiene products production lines that combed, laid and then melted into cloth through hot air. Through the continuous improvement and improvement in the production process, a non-woven fabric of hot air was formed. A set of equipment. Non-woven fabric manufacturing enterprises and textile machinery manufacturing enterprises also have the same process as the first half of this equipment, and the latter half of the non-woven fabric production line equipment that needs to be consolidated into a net by a hot rolling mill has been developed, produced and further Industrialization has been achieved.
With these reference models, China has entered a period of rapid development of non-woven fabrics. Henan Gongyi Spunlaced Nonwovens Factory imported a spunlace nonwoven fabric production line from Europe earlier. The flow of the production line is: the raw materials are weighed, mixed, combed, laid, and then consolidated into a net after the spunlace process, and then dried and rolled into cloth. The products produced by this production line can be used in industries such as industry and construction. After years of digestion and absorption and technical breakthroughs by Zhengfang Machinery, Spunlace curing has finally achieved localization.
In the first half of the process of this equipment, the weighing, mixing, storage, and carding of fibers are the strengths of our country's cotton-spun carding processes and equipment, while the fine-sweeping and carding processes such as laying, hydro-entangling, and roll-cutting are still needed. Research. For example, Xilin, Doffer, Shuangxilin and Shuangdaofu of wide carding machines require high precision and the tolerances are only a few wire tolerances; the Spunlace machine is the key to the production line. This equipment is equipped with various forms. Spunlace needle boards, which are all made of special materials; water pinholes are machined from precision machine tools, and the winding and slitting equipments have to be carefully tackled after fabric drying. In addition, the spunlace process is mainly based on the pressure of water, which is injected instantaneously. After being rebounded and consolidated into a net, the water is filtered and reused. These complete sets of equipment have yet to be made domestically.
As carding technology matures, the technology of acupuncture consolidation into cloth gradually develops. Acupuncture machines are more difficult to manufacture and have more varieties, including extra-wide pre-needling, upper acupuncture, lower acupuncture, and flower acupuncture. Needle acupuncture needles are special and critical; The tank, crankshaft processing, speed frequency, anti-vibration, etc. have higher requirements. The manufacture of these equipments is achieved through domestic research and development.
The birth of complete sets of equipment for the tufted carpet production line was at the beginning of reform and opening up. At the time, the carpet factory of Beijing Yanshan Petrochemical Plant imported a tufted carpeting equipment from Europe. The raw material of polypropylene was spun into flat yarns. After drafting, it became the warp and weft at the bottom of the carpet. It was widened by Sulzer Rutti. The web weaving machine woven into the carpet base fabric, using BCF carpet wire, and then tufting machine tufting, shearing, back gluing, trimmed into a carpet. We also carried out research and development on this equipment. However, key hosts such as tufting machines and backing gluing machines have made breakthroughs. Military enterprises and state-owned textile machinery companies have participated in the research, but ultimately they have no effect. end. In recent years, Shanghai Donghua University adopted the combination of production, education and research to complete the design and manufacture of tufted carpet equipment, and cooperated with carpet manufacturers in Zhejiang and Jiangxi to realize the industrialization of tufting equipment. It has achieved very good results.
Spinning web technology has also developed rapidly over the years. In the spring of 1990, I went to the Netherlands with the Deputy Minister of the National Standard of the People's Republic of China and the Aksu Company in the Netherlands saw for the first time that they used polypropylene slicing as a raw material and used a spunbond process to produce a production line for geotextiles. This company not only produces non-woven products, but also has a relatively complete system of scientific research, production, testing and experimentation. Later, the Hongda Research Institute, Zhengzhou Textile Machinery Factory and Shaoyang Second Textile Machinery Factory successively developed spunbonding, melt-blowing, and spunbonding and meltblown spinning combined into a net, and hot-rolled consolidated into cloth. Then roll slitting the complete set of equipment. This set of technology and equipment has a short process, high speed, high output, wide product use and rapid development. After many years of development, spinning into web consolidation into cloth technology and different sets of equipment manufacturing technology, China has mastered and realized industrialization. At present, the research and development of the two-component composite spunbond process nonwoven fabrics and equipment of the Shanghai Textile Science Research Institute is relatively mature. The Beijing University Hongda Research Institute, Dalian Synthetic Fiber Research Institute and other units developed the meltblown process and non-woven fabric production process technology and equipment. They are also mature and have their own intellectual property rights and have realized industrialization. At present, China's spunlaid nonwoven fabrics consolidated into fabrics accounted for 46% of the production volume, which exceeds the proportion of combed webs consolidated into cloths by 42%.
Industrial nonwovens have gradually expanded from the original textile and apparel industry to the current medical, health, health care, highways, railways, airports, rivers, construction, agricultural cultivation, fisheries, aquaculture, filtration, aerospace industry And other fields, and formed a new industrial non-woven fabric industry. The variety of non-woven fabrics used in industry is endless, and it is an ever-growing industry.
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