Air jet is a non-traditional spinning method. When the fiber sliver is falsely twisted by using the jet air flow, some of the free fibers at the head end of the fiber sliver are wrapped around the periphery of the fiber sliver for spinning. 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.
Extended information:
1. Process principle
The main principle of air-jet spinning is to use the jet airflow to twist 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 and spun.
There are two types: single nozzle and double nozzle. The latter has good and stable spinning quality. The fiber strip is drawn thin 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 end of the twisted fibers on the periphery of the fiber strip is affected by the first nozzle and wrapped around the fiber strip in the opposite direction. The twisted yarn core fiber retreats through the nozzle and is wrapped. The wrapped fibers become tighter and tighter during the reverse unwinding process, providing yarn strength and cohesion.
2. Application scope
1. Short fiber: 5 tex~120 tex, long fiber: 30 dtex~300 dtex (elastic yarn can reach 600 dtex).
2. The fabric density (weft density) can reach 4 threads/cm to 144 threads/cm, and is suitable for low, medium and high grade fabrics.
3. The fabric structure can produce multi-color plaid fabrics such as plain weave, twill weave, satin weave, dobby, two-color, four-color, eight-color and so on.
4. Due to the strong beating force, it can produce heavy or high-density fabrics, such as denim. It can also produce fine staple fiber or filament fabrics, clothing fabrics, bed sheet decorative fabrics and anti-feather fabrics, etc. Different models of looms have a certain range of production varieties due to their special mechanisms and designs.
Baidu Encyclopedia-Jet Spinning