Air Vortex Spinning

In this spinning method ,yarn is formed by an air vortex in a tube. For this purpose, air is sucked in to the tube through tangential slots. The air moves upwards along the tube wall in a spiral and finally arrives at the upper tube seal. Since the exit the tube is prevented by the seal, the air then flows to the centre of the tube and moves down again to an aspirator. An air vortex, rotating continually in the same direction, is generated in the seal. Opened fibre material is allowed to enter the system through an opening. The rising air stream grasps this material and transport it upwards in to the vortex. To form a yarn, an open yarn end is passed in to the tube through a passage in the upper seal.

The vortex grasps this yarn end and whirls it round in circles in the same way as the fibres. Since the upper yarn length is held by the withdrawal  rollers and the lower end is in rotation, each revolution of the yarn end in the vortex inserts a turn of twist in to the yarn.Formation of the fibre strand itself arises because the rotating open yarn end in the vortex is presented with a multiplicity of floating fibres, which are caught by the bound-in fibres of the yarn end and are thus continuously twisted in. One associated problem is the correct, ordered binding-in of the fibres i.e, achieving adequate in the yarn. For this reason, synthetic fibres of the highest attainable uniformity are mainly used. A second deficiency is variability in twist level in the spun yarn; twist can vary within a very wide range. A major advantage of the process is the absence of any kind of rapidly rotating machine parts.

The formation of vortex yarn [1] | Download Scientific Diagram


  • Spinning positions per machine: 192
  • Delivery speed: 100-150 m/min
  • Raw material: synthetic fibres,40-50 mm
  • Count range: Ne 7.5-30;20-80 tex
  • Form of feed stock: draw frame sliver
  • Type of yarn: conventional ,singles yarn
  • Yarn characteristics: low strength, twist variability, rough surface
  • Field of use: undemanding woven goods
  • Advantages: no rapidly rotating parts, simple machine
  • Special features: cotton can not be spun