Welding of geomembranes for mine construction

In mine construction, the material released mechanically or with explosives is washed out into collecting reservoirs (heap leaching pads). The leaktight sealing system ensures that valuable minerals or metals released in this water cannot escape into the groundwater and that the process water does not contaminate the ground. Leister offers welding machines for all requirements: the hot-wedge and combi-wedge machines are designed differently in terms of welding pressure. Various models are available, from the most powerful GEOSTAR hot wedge welding machines through to the lightweight TWINNY S. All tools feature special nozzles, hot wedges, and pressure rollers, which can be used to double weld the sheets which have been laid in an overlapping arrangement. After welding, the testing needle and compressed air can be used to check the integrity of the test channel which has just been created. A version with a USB memory system is also available for certain machines, enabling all relevant parameters to be recorded. Leister also offers the EXAMO, VACUUM BOX, and vacuum bell tools for additional inspection of the welding seam.

• Lap welding of large-area geomembranes in mine construction
• Welding seam quality which can be inspected
• Welding of details

• Efficient welding with machines providing a high welding pressure and heat output
• Lap welds with test channel
• Hand extruders for the extrusion welding of connections and details
• Tensiometers for checking the tensile load and integrity
• Recording of data with a USB memory system
• Wide range of hand welding tools and accessories