Staple fibers can be divided into different categories according to different classification standards. According to raw materials can be divided into primary staple fiber and regenerated staple fiber. Primary staple fiber is made from PTA and ethylene glycol by polymerization, spinning and cutting, commonly known as”Large chemical fiber”, after drying, melting, spinning, cutting is made, commonly known as”Small chemical fiber.”. Primary staple fibers are divided into melt direct spinning and batch spinning according to different spinning processes. Melt direct spinning staple fiber is produced from PTA and ethylene glycol by direct spinning without producing polyester chips. At present, melt direct spinning technology is basically adopted in the production of conventional staple fiber varieties in China. Batch spinning, also known as chip spinning, is a process for producing fibers from PET chips. Compared with melt direct spinning process, batch spinning reduces polyester unit, increases chip drying and melting unit, and the following process is basically the same. Staple fibers are mainly divided into three categories according to their different uses: yarn spinning, filling and nonwovens. Spinning is the most important use of staple fibers, including cotton and wool spinning two aspects. Cotton and wool spinning refers to cotton and wool fiber spinning, respectively. The amount of cotton spinning is large, including polyester pure spinning, polyester-cotton blended, polyester-viscose blended and polyester staple fiber sewing thread production. Wool spinning mainly includes polyester-nitrile, polyester-wool blend and the production of blankets.
Staple fibers are mainly divided into three categories according to their different uses: yarn spinning, filling and nonwovens. Spinning is the most important use of staple fibers, including cotton and wool spinning two aspects. Cotton and wool spinning refers to cotton and wool fiber spinning, respectively. The amount of cotton spinning is large, including polyester pure spinning, polyester-cotton blended, polyester-viscose blended and polyester staple fiber sewing thread production. Wool spinning mainly includes polyester-nitrile, polyester-wool blend and the production of blankets. Filling is mainly short fiber in the form of fillers, as household fillers and clothing insulation materials, such as bedding, cotton clothing, sofa furniture, plush toys, such as filling. Most of these staple fibers are hollow polyester staple fibers. Nonwovens are an extension of staple fiber applications and have developed rapidly in recent years. Non-woven fabrics are widely used, such as spunlaced non-woven fabrics mainly used in wet wipes, medical fields, geotextiles, leather base cloth, linoleum Kieb, etc. . At present, the largest proportion of the market for primary spinning polyester staple fiber products.
Post time: Jun-05-2023
