How can fibers be produced by machines? This is the product of the development of science and technology in recent decades. The use of cellulose fibers or the use of natural gas and acetylene gas as raw material, through chemical synthesis, mechanical spinning, drawing and producing artificial fibers or synthetic fibers, collectively referred to as chemical fibers. These fibers are produced by mechanical and chemical changes. Chemical fiber production, and natural fiber production to keep pace with the development of the benefit of mankind.
With the development of science and technology, the raw material production of the textile industry is extended, which is beyond the fiber production field. Can the production of man-made fibres and synthetic fibers and the mechanical equipment for the production of these raw materials be called fibre production machinery?
Artificial fiber raw material is cotton pulp or wood pulp, cotton pulp and wood pulp production into pulp, a main and auxiliary set. Pulp after crushing, aging, yellowing, dissolving, filtering, spinning and postprocessing, the formation of rayon filament or staple, the entire production line by dozens of host and hundreds of auxiliary and waste recycling, the use of complete sets of equipment and solutions. Spinning process is different, varieties, specifications, selection of complete sets of equipment is also different. The annual production capacity of the whole production line of short thread is 10000 ton, 30 thousand ton class and 45 thousand ton class. The artificial fiber filament also has semi continuous spinning and continuous spinning. Different process, selection of equipment is also different.
The main raw material of synthetic fiber is the use of natural gas, but also acetylene gas, after polymerization, decomposition, synthesis, belonging to the subject of chemical polymer.
Different synthetic fiber raw materials, production process and equipment of synthetic fiber is different, the traditional Vigny and Vigny Lun Lun materials: polyvinyl alcohol, the use of natural gas or acetylene gas after polymerization and alcoholysis, washing, dissolving, filtering, spinning, drafting a filament or staple. There are dozens of mainframe of complete equipment, and the auxiliary machine is composed of hundreds.
Traditional, large and wide synthetic fibers polyester, nylon, polypropylene, spandex and acrylic fibers, most of which come from the lower reaches of petroleum processing. With the development of science and technology, the change of the technological process, connection process, and then have a connection with the spinning of polyester production of polyester, with the upstream product of terephthalic acid and ethylene glycol production connection, formed of synthetic fiber industry chain.
At present, terephthalic acid and ethylene glycol polymerization device have all achieved domestically, and have different processes and one with an annual output of 200 thousand tons 300 thousand tons and larger production scale, different production line.
Polyester raw materials are different, the use of different products, with the technical equipment is also different. There is a fiber grade formed by esterification and polymerization, as well as a solid phase increase after polymerization to form a bottle grade, film grade product. These products must be equipped with complete sets of technical equipment.
Synthetic fiber raw materials are different, spinning process is different, the production capacity of single line is also different. For example, polyester staple fiber, single line annual output capacity of 10000 tons, 30 thousand tons, 50 thousand tons, 60 thousand tons, Germany has an annual output of 75 thousand tons. The spinning and winding speed of polyester filament is raised, and the productivity is also increased rapidly. Nylon industrial yarn, civil silk, polypropylene yarn, carpet yarn single line capacity can be determined according to the size of the construction. Each kind of product's craft complete set, the project complete set, the disposition craft, the technology, the equipment, must have dozens of kinds of hosts, dozens of kinds of auxiliary machinery matching.
After the filament spinning of synthetic fiber but also the need for postprocessing, deep processing, wire drawing and texturing, including multifilament, making synthetic fiber as the primary product market.
With the development of science and technology, the nonwoven technology, which is made from polyester chips for melt spinning, mesh and spun spinning, is becoming more and more mature and developing rapidly. And the recovery and reuse of waste polyester. These are made by domestic equipment to processing production. The change of polymer science, there are many for the aviation and aerospace, water conservancy, environmental protection, construction, medicine, tourism and high-end clothing, decorative high-tech fibers have been developed, including meta Aramid 1313, para aramid 1414, different grades of carbon fiber. There are a lot of high strength and high wear resistance, high temperature, corrosion resistance and flame retardant high performance fiber, and multi-component, composite superfine fiber, differential fiber. The appearance and development of these products are formed by the close combination of mechanical equipment and process.
Fiber production machinery is a highly sophisticated technology including chemistry and physics. It is a systematic project that can not be underestimated. With 1 grams of polyester raw materials through the island spinning process, spinning super fine fiber easier said than done 200 km long? There is still a lot of difficulty in doing these work. Besides, these industries are still developing and changing.
The development of textile machinery industry today is not only the initial stage of spinning and weaving yarn with natural fibers, but also the level of textile material production. Therefore, the social status and social identity of fiber production machinery should enter a new height.
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