Profile: UD Technologies specializes in Designing and Manufacturing of Rotary Film Vacuum Evaporator,HCl gas Generator,Bromine Recovery plant,Glass Pilot plants ,Glass Shell And Tube Heat Exchangers. Wiped Film Evaporator is ideally suited to process Hard ?to ?handle, heat sensitive and Viscous materials. These are just some of the many and varies products that are processed by WFEs. The roller wiped film system guarantees a uniform, laminar mixing of the thin film on the entire evaporator surface. Due to the overlapping of the rollers and wiping on the unheated areas, so-called ?dead-zones? are avoided. At the same time, the liquid thin film on the rollers is continuously renewed. This results in a very low residence time of the evaporating feed on the evaporator surface. Build-up or caking of material on the evaporator surface and on the rollers, which might happen with other wiping systems, is completely avoided with the UD designed roller wiped film system.