Polyester Staple Fiber: The backbone of the textile industry

Polyester Staple Fiber, referred to as PSF, is a fiber obtained by spinning polyester (polyethylene terephthalate, referred to as PTA) into a tow and cutting it. This fiber occupies an important position in the modern textile industry and is favored for its superior performance and wide application fields.

The production process of polyester staple fiber includes slice preparation, spinning, stretching, cutting, heat setting and other links. Slice preparation is the first step of the entire production process. The polyester raw material is made into polyester slices through melting, extrusion, stretching, cutting and other processes. Then, these slices are heated, melted, filtered, pressurized, extruded and other processes to form a melt and injected into the nozzle through the spinning equipment. The high-speed airflow stretches the melt into fibers. Subsequently, the fiber undergoes cooling, stretching, cutting and other processes, and then obtains a certain resilience and shape stability through heat setting, and finally obtains high-quality polyester staple fibers.

Polyester staple fiber plays an important role in the textile industry due to its physical and chemical properties. Its high strength, good wear resistance, elasticity close to wool, high wrinkle resistance, and dimensional stability make clothing, home textiles, decorative fabrics and other products made of polyester staple fibers both durable and beautiful. The light resistance of polyester staple fibers is second only to acrylic fibers, and its corrosion resistance is also excellent. It can resist bleach, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids, and has certain resistance to dilute alkali. These characteristics enable polyester staple fibers to maintain stable performance under a variety of extreme environments.

In the textile industry, polyester staple fibers are mainly used in spinning, non-woven fabrics, thread making and filling. Spinning is the most important downstream field of polyester staple fibers. It can be spun alone to make pure polyester yarn, or blended with cotton, viscose staple fibers, etc. to make polyester-cotton yarn, polyester-viscose yarn, etc. In the non-woven fabric field, polyester staple fibers with special specifications for spunlace are mainly used. The wet wipes, masks and other products produced have the characteristics of good hydrophilicity, softness and comfort. In terms of thread making, polyester staple fibers are used to make strand products such as sewing thread. In the field of filling, polyester staple fiber is used to make products such as spray-bonded cotton, non-bonded cotton, and pearl cotton, and is widely used in the field of home textile filling and clothing filling.

Polyester staple fiber not only performs well in the traditional textile field, but also shows great potential in emerging fields such as environmentally friendly fibers and high-tech fibers. As people pay more attention to environmental protection and sustainable development, the market demand for polyester staple fiber as an environmentally friendly material continues to increase. Many companies are committed to the research and development of recyclable and degradable polyester staple fiber products to meet the market demand for environmentally friendly fibers.

Polyester staple fiber is also widely used in the field of high-tech fibers. For example, through copolymerization modification, polyester staple fibers with special properties such as high shrinkage polyester fibers, low melting point polyester fibers, and flame-retardant polyester fibers can be prepared. These polyester staple fibers with special properties have broad application prospects in aerospace, medical, electronics and other fields.