In spinning mills, the back preparation processes play an important role in determining the quality in the later stages of yarn production and of the final product. Drawing frames and combing machines take an important place in the entire spinning line. Imperfection defects that may occur in these preparation processes are transferred into the yarn and consequently into the fabric knitted/woven.
The cots in the drafting system of drawing frame and combing machines play an important role in the realization of the drafting process. Asteks R&D mainly concentrates on how to increase fibre control and how can this contribute to the contamination problems frequently encountered especially with the local cotton spinning. Considering the following tasks of drawing frames, the most of the process is performed by the drafting system.