Due to its special width of 8 mm, the polytetrafluoroethylene (PTFE) pressure roller from Leister distributes the pressure much better than less wide pressure rollers when welding detail work. Due to the better pressure distribution and because the material of the roll (PTFE) heats up less, geomembranes are rarely damaged during welding. The PTFE pressure roller is used for detail work such as welding corners, edges and curves when sealing flat and pitched roofs and when welding swimming pool membranes.
