Filter bags made of polyacrylonitrile needle felt with oil and water repellent PTFE-based finish are extra-protected against chemical influences. The surface of the bag is moisture-repellent, while the PTFE concentrate contained in the impregnation protects the bags from acids, alkalis and hydrolysis.
Thanks to this finish, the filter bags have an increased anti-adhesiveness and will regenerate more effectively. The dusts do not stick to the bags and the compressed air pulses separate the dust cake from the bags with ease.