In the process of yarn processing in the textile industry, in order to ensure the performance of the fabric, the method of twisting the yarn is usually adopted to improve the strength and elasticity of the yarn. Compared with before twisting, polyester twisted yarn has great advantages in all aspects. During the spinning of the ring-spun yarn, due to the movement of the fiber, from the inner layer of the yarn to the outer layer, and then from the outer layer to the inner layer, it repeatedly moves many times. The fiber is spiral around the axis of the yarn, and the spiral radius is along the axial direction Alternately increase or decrease. At this time, the fibers with a longer length tend to tend toward the axis of the yarn, and the fibers with a shorter length tend toward the outer layer of the yarn. Fibers with fineness tend to the axis of the yarn, and fibers with fineness tend to the outer layer of the yarn. Fibers with a small initial modulus are mostly located in the outer layer, and fibers with a large initial modulus are mostly located in the inner layer. Reasonable selection of fibers of different traits can be spun into different styles of yarn to adapt to different fabric uses or improve wear performance. Since the twisted polyester yarn can be arbitrarily selected for length, fineness and cross-sectional shape of the fiber, the outer fabric should be blended with chemical fiber and cotton with a slightly thicker fiber and a shorter length to increase the wooliness on the surface of the yarn.

What are the characteristics of twisted yarn? 　　In fact, the twisted yarn is a textile yarn process. To say that its characteristic is that the process of processing textile fibers into yarn can be called twisted yarn.