Leister COMET 700 Automatic Hot Wedge Welding Machine

The Leister COMET 700 is an automatic hot wedge welding machine engineered for overlap welding of geomembranes in PE, HDPE, LDPE, LLDPE, PP, TPO, and FPO across civil infrastructure, environmental containment, and hydraulic engineering applications, with integrated Wi-Fi, GPS, and the Leister Quality System for real-time weld parameter recording and digital reporting.

Geomembrane Overlap Welding in Civil and Environmental Infrastructure

Civil infrastructure projects involving landfill containment, reservoir and canal lining, foundation sealing, and gas barrier installation demand weld seams that perform under long-term hydrostatic and chemical loading – and that can be documented, verified, and reported to project specifications and regulatory requirements. On large-scale installations across varied terrain, the consistency of weld parameters from the first metre to the last is as important as the quality of the individual seam.

Manual documentation of welding parameters introduces risk into the quality assurance process – data gaps, transcription errors, and incomplete records that create liability exposure at handover. The COMET 700 is designed for projects where none of that is acceptable. Its integrated Wi-Fi, GPS, and Leister Quality System capture welding speed, wedge temperature, welding pressure, and site coordinates automatically throughout each run, generating the digital weld reports that infrastructure clients and environmental regulators require without additional operator effort.

Engineering Performance of the Leister COMET 700

• Integrated LQS Data Recording: The Leister Quality System captures welding parameters and GPS coordinates continuously during operation, enabling digital weld report generation that meets project documentation requirements without manual data entry or post-weld reconstruction.
• Wi-Fi and GPS Connectivity: Real-time wireless data transmission and positional recording link each weld record to a specific site location, providing the traceability that civil and environmental project audits demand and that project managers rely on for quality sign-off.
• Welding Speed up to 8 m/min: Achieves speeds between 0.8 and 8 m/min across geomembrane thicknesses from 0.5 mm to 3.0 mm without requiring gearbox conversion, maintaining process efficiency across different material specifications on the same project.
• 2300 W Heating System with Power Reserves: The high heating power of 2300 W combined with built-in power reserves sustains weld quality under undervoltage conditions – a practical requirement for remote or generator-powered civil project sites where supply voltage is not always stable.
• Digital Welding Pressure Display with Acoustic Alarm: Continuously monitors and displays welding pressure, triggering an acoustic alarm if pressure deviates outside the operator-defined range – providing an active quality control mechanism that protects weld integrity without requiring constant manual monitoring.
• Automatic Wedge Positioning: The hot wedge positions automatically, ensuring consistent engagement with the geomembrane and repeatable heat transfer geometry across the full weld run, reducing operator dependency on manual setup accuracy.
• Optimised Heating Wedge Geometry: The copper hot wedge – available in 60 mm and 90 mm lengths – is shaped to maximise heat transfer efficiency during overlap welding, with the 90 mm variant specifically optimised for thick geomembranes from 1.5 mm to 3.0 mm.
• Field-Kit Drive System for Terrain Adaptability: The standard Field-Kit travel roller configuration enables reliable welding on flat, uneven, and sloped terrain without equipment reconfiguration, supported by a powerful drive motor and ergonomic three-handle layout for guided operation and ease of lifting.
• Broad Material Compatibility: Welds FPO, HDPE, LDPE, LLDPE, PE, PP, and TPO geomembranes from 0.5 mm to 3.0 mm, with material-specific hot wedge options in copper for PE-based geomembranes and steel for PVC or vinyl applications.

Geomembrane Welding Applications in Oman and the GCC

• Landfill and Mine Sealing: Delivers continuous, documented overlap welds for primary and secondary containment liner systems in municipal solid waste landfills and mine tailings facilities where regulatory compliance and leak prevention are absolute requirements.
• Reservoir, Canal, and Pond Lining: Provides the weld speed, pressure consistency, and seam quality required for large-area hydraulic containment installations including irrigation reservoirs, potable water storage, and ornamental or aquaculture pond liners across the Gulf region.
• Foundation and Gas Barrier Installation: Welds geomembrane gas barriers and foundation waterproofing systems in civil construction projects where joint integrity determines the long-term performance of the building envelope or sub-structure containment.
• Aquaculture Facility Construction: Supports the fabrication of aquaculture pond liners requiring consistent weld integrity across large geomembrane panels in environments where biological containment and water retention are critical to operational performance.
• Sloped and Uneven Terrain Applications: The Field-Kit configuration and powerful drive motor enable productive welding on embankment faces, berm slopes, and irregular ground profiles common in civil earthworks and containment bund construction across Oman and the wider GCC.

Leister COMET 700 – Authorised Supply and Technical Support Through iBuild in Oman

iBuild is an authorised Leister distributor in the Sultanate of Oman, providing direct access to the COMET 700 alongside the full range of compatible hot wedges, drive rollers, and field accessories. As a manufacturer-authorised technical partner, iBuild supports COMET 700 procurement with equipment selection guidance, application consultation, and lifecycle support to ensure the machine is correctly configured for the geomembrane materials and project conditions it will encounter.

For civil contractors, environmental engineers, and geotechnical project teams operating across Oman and the GCC who require a documented, reliable, and specification-compliant hot wedge welding solution, iBuild provides the in-country availability, technical expertise, and manufacturer backing the project requires.