Considering the fact that the nozzle is the key element of air texturing technology,introduction is made to the progress of research and development of air texturing nozzles in recent year.

The result shows that after optimization the strongest distortion of cylinder was cut down by 50%.

In addition to the changeable hairiness structure,the difficulty of telling the boundary between the hairiness formed by the protruding scattered loops and main body makes the hairiness testing especially hard to control in case of air-jet textured yarn.

Effect of processing conditions on polyester blended air-textured yarn;