Pure polyester yarn is made of polyester staple fiber by warp spinning, and the staple fiber has different categories. From the length, it can be divided into cotton fiber, the length is about 37 mm, there are medium and long fibers, the length is 51 mm-57 mm. mm, with hairy fibers, 75 mm-105 mm in length. In terms of thickness, there are fine denier fibers, which are around 1.5D, coarse denier fibers around 5D, and intermediate 3D fibers. Of course, there are finer fibers such as 1D, and even ultra-fine fibers such as 0.1-0.5D. The yarn is as fine as 50 to 60. It is better to use fine denier fibers for spinning, which is easy to spin evenly, has good evenness, and has less hairiness. If the fibers are longer, it can increase the cohesion and strength, and the spun yarn feels fine. , On the contrary, the rough denier yarn feels rough and has a better wool feel. and many more. When spinning polyester spun yarn, it is necessary to know how thick the fiber is, what the length is, and generally know where the staple fiber is produced. It has the characteristics of strong and durable, good elasticity, not easy to deform, corrosion resistance, insulation, crisp, easy to wash and quick dry.
　　Polyester fabric has high strength and elastic recovery, so it is durable and easy to iron. Polyester fabric, not deformed, has good wash and wear properties. Polyester is a synthetic fabric with good heat resistance and thermoplasticity, which can be made into pleated skirts and pleats. The light fastness of polyester fabric is better, and its light fastness is better than that of day-dyed fiber fabric. Especially the light fastness behind the glass is very good, almost on par with acrylic. Polyester fabrics have good resistance to various chemicals. Acids and alkalis are not very damaging to them, and they are not afraid of molds and insects. Polyester has a wide range of uses and is widely used in the manufacture of clothing and industrial products. Polyester is used as a clothing fiber, and its fabrics are wrinkle-free and iron-free after washing. Polyester is often blended or interwoven with various fibers, such as cotton polyester, wool polyester, etc., and is widely used in various clothing and decorative materials.
　　Polyester can be used for conveyor belts, tents, canvas, cables, fishing nets, etc. in industry, especially polyester cords used for tires, which are close to nylon in performance. Polyester can also be used for electrical insulating materials, acid-resistant filter cloth, medical industrial cloth, etc. Polyester is an important variety of synthetic fibers, and is the trade name of polyester fibers in my country. Polyester has a wide range of uses and is widely used in the manufacture of clothing fabrics and industrial products. Polyester has excellent shaping properties. After the polyester yarn or fabric is set, the flat, fluffy shape or pleats, etc., can be washed for many times in use, and it will remain unchanged for a long time. loved by people. Polyester fiber is the chemical fiber variety with the most processing volume among all textile fibers. The development of differentiated varieties, increasing the added value of products, and improving the economic benefits of enterprises are of great importance to the entire chemical fiber industry; product differentiation is the development direction of polyester, and China's polyester fiber production enterprises are also developing in this direction. Therefore, the polyester industry still has great development potential.