Air covering is a process of providing a chemical thread with compactness by entangling elementary chemical threads by aerodynamic treatment (GOST 27244-93).

Aerodynamic method enables to get textured threads not only from chemical threads, but also from the natural ones.

Textured threads (DTY) serve as a raw material for manufacture of finished goods by air covering method.

Covering threads are applied in various fields, such as hosiery, knitted underwear, and sportswear.