Jet spinning is a new technology in the field of spinning. It has become an important player in the textile industry due to its comprehensive technical and economic advantages such as excellent yarn quality, short process, high output, wide spinning range, less labor and high degree of automation. Attractive high-tech. The air-jet spinning machine is most suitable for the production of chemical fiber yarns of equal length fibers and blended yarns of chemical fibers and natural fibers. It has unique advantages especially for the production of differentiated fiber yarns, such as the production of fine denier fiber yarns, etc., but it is not suitable for the production length. Natural fibers with poor uniformity.
The air-jet spinning process is simple. After high-power drafting by four rollers and double aprons, the spitted strands directly enter the nozzle, and the nozzle twists and wraps the strands through compressed air. The yarn is then taken out by the yarn take-up roller and wound onto the yarn cone through the yarn clearer to form the package yarn. The roving process can be omitted for front spinning, and the winding process can be omitted for post-spinning. The characteristic of air-jet spinning is the production of fine special yarns (high count yarns), which is suitable for pure spinning and blending of natural fibers, synthetic fibers, and cotton-type chemical fibers, but it is difficult to spin pure cotton.
The main principle of air-jet spinning is to use the jet airflow to perform false twisting on the fiber strip after drafting. Some free fibers at the head end of the fiber strip are wrapped around the periphery of the fiber strip. yarn. There are two types: single nozzle and double nozzle. The latter has good and stable spinning quality. The fiber strip is stretched by the drafting device, output from the front roller, passes through the first nozzle, the second nozzle, the yarn guide hook, the yarn guide roller, and is wound into a bobbin by the grooved drum.
The vortex rotation directions of the two nozzles are opposite, and the vortex intensity of the second nozzle is greater than that of the first nozzle, so that the twist on the yarn sliver between the two nozzles can overcome the torque exerted by the first nozzle on the yarn sliver. and resistance, transmitted to the jaws of the front roller. The free head ends of the twisted fibers on the periphery of the fiber strip are affected by the first nozzle and wrapped around the fiber strip in the opposite direction. The fibers in the twisted yarn core are retreated and twisted through the nozzle, while the wrapped fibers become tighter and tighter during the reverse reeling process. Provide yarn strength and cohesion. Compared with ring spinning, air-jet spinning has the advantages of high output, large packages, and short processes. The speed range of air-jet spinning is from 100-200 meters/minute, and the suitable spinning yarn count range is: 5.5-3.0 tex.
The output is 10 times that of ring spinning and 2 times that of open-end spinning. It is suitable for spinning various short fiber and filament core-spun yarns and processing plied medium-length chemical fiber yarns. Japan’s Murata is an expert in air-jet spinning, and its products include MJS, MVS, and RJS. The shape of air-jet spinning is similar to open-end spinning, with a hard feel and good hairiness. </p
