Study on snarling structure of filament textured yarns

As one of the primary features of textured yarn structure,the snarling structure well explains many concerning physical phenomena of textured yarns,such as the stability of the textured yarn,the excessive bending rigidity of the air textured yarn.The snarling structure and the disordered structure come into being at the same time during texturing,so they are closely linked and dependent each other.The snarling knots density and snarling degree can indicate how tight the filaments are locked.A physical mass point-light spring model is chosen to analyze the mechanical relationship among the nodal points,and then a Newton dynamic equation concerning the motion of the nodal points is built.In addition,there is a close relationship between the snarling degree and bending rigidity of textured yarns,therefore,an indirect way of measurment may be adopted.