Heat-Setting and Texture Stability in Polyester Draw Textured Yarn
Polyester Draw Textured Yarn (DTY) is a manufactured filament yarn produced from polyester POY through a controlled drawing and texturizing process. By combining mechanical deformation with thermal treatment, the smooth filament structure of POY is transformed into a yarn with permanent texture, bulk, and stretch. This transformation allows DTY to achieve stable physical performance while maintaining consistency in appearance and handling.Texturizing and Drawing ProcessThe defining characteristic of polyester draw textured yarn lies in its simultaneous drawing and twisting under heat. During production, the yarn undergoes a sequence of hot drawing, twisting, thermosetting, and de-twisting, which permanently alters the molecular alignment of the polyester filaments. Heat setting plays a cri...
