Imitation rabbit hair core spun yarn usually uses viscose, nylon, and rabbit-like nylon blended raw materials as the outer fiber and PBT filament as the core yarn. The pre-spinning process parameters are reasonably selected, a filament core-spun device is installed on the spinning frame, and optimized Parameters such as filament tension, spindle speed, twist, equipment specifications, etc., through strict control of spinning process equipment and operation quality, specially formulated quality control management methods and internal control quality standards, and finally made the imitation rabbit core-spun yarn spun. Few defects and good quality. The developed imitation rabbit core-spun yarn not only overcomes the defects of natural rabbit hair yarn depilation and pilling, but also has the characteristics of soft, fluffy and smooth rabbit hair yarn, and the quality index and appearance style meet the requirements of weaving.

　　PBT filament is a new type of fiber with low cost, chlorine resistance, acid and alkali resistance, light resistance, heat resistance, chemical resistance, good abrasion resistance, dimensional stability and elasticity, and the elasticity is not affected by humidity. The viscose staple fiber in the outsourcing fiber has good moisture absorption, good dyeing performance, no static electricity, good spinnability and wearing comfort. Nylon staple fiber has high strength and good elasticity, which can make up for the defects of low strength and poor elasticity of viscose fiber. Rabbit-like nylon is a special-shaped fiber. Its flat cross-section gives the fiber soft and delicate, similar to rabbit hair feel and luster. It has good fluffy and air permeability and has excellent anti-pilling, fiber resilience and coverage. It can also be improved; the fiber fineness is gradually distributed in the outer layer of the yarn during the thickest drafting process among the three raw materials, which is conducive to shaping the rabbit hair feeling.

　　The more common core-spun yarn is polyester core-spun yarn, which uses polyester filament as the core-spun yarn and purchases cotton fiber. There is also spandex core spun yarn, which is made from spandex filaments and other fibers made from other fibers. Knitted fabrics or jeans made with this core spun yarn stretch easily and are comfortable to wear.