The black coiled material in the picture is an HDPE/PE plastic welding rod, which is a key consumable for geomembrane extrusion welding, primarily used with hand-held extrusion welders.
Basic Information
- Material: Made mainly of high-density polyethylene (HDPE), the same material as most geomembranes. LDPE rods are also available for specific applications. This ensures material compatibility and a weld strength matching the base material.
- Specifications: Common diameters include 3 mm, 4 mm, and 5mm, available in single-strand, double-strand, or multi-strand forms. They are typically supplied in coils or straight lengths for easy on-site handling.
- Working Principle: The rod is heated and melted by the extrusion welder, then fused with the geomembrane surfaces. After cooling, it forms a high-strength, impermeable monolithic weld.
Main Features
- Material Compatibility: Produced from the same raw material as HDPE geomembranes, eliminating the risk of delamination or leakage at the weld and ensuring high joint strength.
- Weather and Corrosion Resistance: Offers excellent anti-aging, UV resistance, and chemical resistance, suitable for harsh environments like landfills and sewage tanks.
- Flexible Application: Ideal for complex areas where automatic crawler welders cannot reach, such as corners, pipe penetrations, repairs, and confined spaces.
- Reliable Sealing: The weld fuses with the base material to form a continuous impermeable layer, meeting the air and water tightness requirements of anti-seepage projects.
Main Applications
- Geomembrane Repair: Used to fix leaks, holes, or missed welds from automatic welding to restore the integrity of the liner.
- Complex Joint Welding: Welding geomembrane laps at pipe penetrations, corners, and around structural elements.
- Specialized Construction: Welding in hard-to-reach areas in landfills, tailings ponds, sewage tanks, and artificial lakes.
- Other Plastic Welding: Also suitable for welding and repairing HDPE pipes, sheets, tanks, and chemical containers.
