... procedure are automatic, high efficiency and low cost. The shoe cover machine products for hospitals, non dust industrial operations, food processing plant, ... learn; 2. Used converter Control for precise operation; 3. Adopt ultrasonic and hot seal, auto clutch heating roller. 4. ... welding non-woven edge cover. 3. Hot-sealing no spark no smoke. 4. Auto material folding, auto clutch heating roller, ...