The research and development of high-shrinkage polyester staple fiber has attracted more and more attention in the last decade. Due to its potentially high shrinkage properties, the product produced has a unique style of compact, breathable and soft, and is widely used, such as high-grade blankets and imitation leather. Base cloth, acupuncture, and sanitary materials such as spunlace. Not only that, the inherent thermal shrinkage properties of polyester staple fiber are utilized in production, which can save the traditional cumbersome processes, simplify the production process, and reduce equipment costs.