Textured yarn is obtained by deforming synthetic fiber filament from straightening to crimping, also known as textured yarn or processed yarn. Textured yarn includes high elastic yarn, low elastic yarn, expanded yarn and network yarn.

Several characteristics of textured yarn:
① Raw materials: thermoplastic synthetic fibers and filaments are generally used (except network filaments)
② Processing: after mechanical and physical deformation processing, the original parallel arrangement of filaments is changed
③ Appearance of yarn: there are two-dimensional or three-dimensional curl deformation (curl, wire loop, wire arc, ripple) distributed along the axial direction
④ Yarn performance: the filament is reinforced in a certain way, and the deformed filament has a certain strength and elongation performance