1 volume density: reflect the characteristics of fiber piling;
2 The fiber twist back angle, curl and so on: reflect the fiber along the yarn axis of the straight degree;
3 stock Line of the number of strands, twist to:
4 line density (diameter) and coefficient of variation: reflecting yarn thickness and variation 5 The interaction between the fibers (friction factor, entanglement point, action fragment or slip length, etc.): reflecting the stability of the yarn structure
