Abstract: With the eco-friendly and high-strength characteristics, lyocell fiber has great application potential in air-jet vortex spun yarns. On the basis of introducing the principle and structure of air-jet vortex spinning, the paper focuses on the process principles, components options and applications, and the key to quality control for lyocell fiber by air-jet vortex spinning. The final yarn forming index indicates that compared with polyester and viscose fibers produced by air-jet vortex spinning, lyocell fiber produced by the same process has obvious advantages. Through the research on related processes, the air-jet vortex spinning and the lyocell advantages can complement each other, so as to expand the application field of air-jet vortex spun yarns.

Key words: lyocell; air-jet vortex spinning; process; components; quality control