The most important factors involved in the raising process are the following:

1. the rotation sense and peripheric speed of the main drum;
2. the rotation sense and the peripheric speed of the raising rollers;
3. the linear speed and the direction of the fabric;
4.the tension applied to the fabric during the raising process;
5. the contact degree between raising rollers and fabric;
6. the perfect synchronization between the cleaning brushes and the raising rollers.

VELURA is the synthesis of a continuous and perfect automatic control of all the working parameters and their synergies. VELURA allows to work keeping the fabric at the minimum necessary tension to carry out the raising process, and to maintain it constant by means of an electronic loading cell tension control (international patent) checking directly on the fabric the set tension. The classic systems act on the mechanical devices deputed to adjust the fabric tension control in a slow and non-precise way.