Abstract:

In the air-jet twisting process of the traditional jet vortex spinning, the higher ratio of dropping fiber causes oore thin places in the yarn. And because of the core fibers in the yarn are parallel and straighten, the yarn strength is lower. This paper proposed the self twist jet vortex spinning. It improves the ingot surface of hollow spindle by laser to increase the surface friction resistance between the hollow spindle of self twist jet vortex spinning and the tail end of fiber. The tail end of fiber rolls and  self twists, and then is wound into the yarn body. The self twist of the fiber will increase the friction and the cohesion between the fibers in the yarn, which improve the strength of the yarn. This paper analyzed conventional jet vortex spinning and self twist jet wortex spinning comparatively from the three aspects of the hollow spindle structure, the airflow distribution inside the nozzle, and the yarn performance based on fluid dynamics simulation and sample yarn spinning test. The research result verifies the feasibility and superiority of the self twist jet vortex spinning.

Key words: self twist jet vorte spinning, hollow spindle structure, airflow, yarn structure, yarn performance