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Handheld Geomembrane Hot Air Welder for HDPE/LLDPE Geomembrane
Gromembrane welding machineare is a handheld hot-air welding tool, which can weld geomembrane of different thickness, and are applicable for welding of all thermal-fused material such as PE, PVC, HDPE, EVA, PP and the like.
The control of welding machine adopts PID automatic thermostatic control with high control accuracy and low temperature fluctuation; speed control adopts PWM automatic voltage and speed regulation circuit, driven by DC servo motor, with great output torque and the operating is stable. It can maintain a constant speed on the condition of creeping, vertical creeping, and variable road load. This welding machine is stable in performance despite of external temperature and voltage variation as well.
Color :
Red, Green, BlueSpecifications :
61*17*54Weight :
12-13kgLead Time :
7-14 days after receipt of the depositePayment :
FOB (Can communicate and negotiate)Product Origin :
ChinaShipping Port :
Qingdao
Geomembrane Welding Gun, also known as a Geomembrane Hot Air Welder, is a precision machine used to join geomembrane sheets—low-permeability synthetic liners made of materials like high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), or polyvinyl chloride (PVC)—by applying heat and pressure to form durable, impermeable seams.
The machine uses an electric heating system to produce high-temperature air. The heated air is directed through a nozzle onto the welding area of two thermoplastic geomembrane sheets. Once the surfaces reach the appropriate welding condition, pressure is applied using a roller or suitable hand pressure to create a bonded seam.
This welding machine is excellent in performance and easy for operating, with high welding speed and good work quality. It is extensively used in engineering projects such as express highway, tunnels, reservoirs, waterproof of construction and so on.
| Item | Parameter |
| Welding Speed | 0.5-5m/min |
| Heating Temperature | 0-450℃ |
| Thickness of material to be welded | 0.2-3mm |
| Overlap width | 100mm |
| Interior cavity | 12mm |
| Welding width | 12.5*2 |
1. Leak Prevention and Seam Quality
A geomembrane hot air welder uses controlled hot air to heat HDPE, LLDPE and other thermoplastic geomembranes, creating strong and continuous welded seams at overlap areas. Proper control of welding temperature, speed and pressure improves seam quality and reduces leakage risks in landfills, fish ponds, artificial lakes and wastewater containment projects.
2. Operational Efficiency
Automated welders reduce labor by 40%, completing 500–1000 m²/day, per Leister. IoT monitoring cuts rework by 15%, per BPM data.
3. Long-Term Reliability
Seams resist 50–100 years of chemical and UV exposure with proper cover, per ASTM D7238, saving $0.5–$1/m² in repairs over 20 years, per Demtech.
4. Versatility
Welders handle diverse materials and site conditions, meeting 95% of project needs, per GRI-GM13. Adjustable settings ensure precision for slopes and textures.
5. Cost Savings
Welders reduce installation costs by 20–30% compared to manual methods, with rental options saving 50% on equipment costs, per Alibaba. Choosing the right geomembrane welding equipment can control overall installation costs by improving productivity, reducing labor requirements and minimizing rework. Large projects can combine automatic welders with handheld hot air welders, while portable equipment is suitable for smaller projects and repair work.
1. Landfill Liner Installation
Usage: 40% of geomembrane welder demand, per Geosynthetics Magazine.
Purpose: Create leak-proof seams for landfill liners and caps to prevent leachate migration.
Specifications:
Welder Type: Hot wedge (dual-track).
Seam Strength: 20–40 kN/m
Material: HDPE (1.0–2.5 mm).
2. Mining Containment
Usage: 25% of welder demand.
Purpose: Weld liners for heap leach pads and tailings ponds to contain chemicals.
Specifications:
Welder Type: Extrusion and hot wedge.
Seam Strength: 25–50 kN/m.
Material: HDPE (1.5–3 mm).
3. Water Containment
Usage: 20% of welder demand.
Purpose: Join liners for ponds, reservoirs, and canals to prevent water loss.
Specifications:
Welder Type: Hot wedge and hot air.
Seam Strength: 15–30 kN/m.
Material: HDPE, LLDPE, PVC (0.5–1.5 mm).
4. Wastewater Treatment
Usage: 10% of welder demand.
Purpose: Weld liners for basins and lagoons to contain sludge and effluents.
Specifications:
Welder Type: Hot wedge and extrusion.
Seam Strength: 20–40 kN/m.
Material: HDPE (1.0–2.0 mm).
5. Other Applications
Aquaculture (3%): Hot air welders join PVC liners, improving water quality and fish growth by 10%, per FAO.
Oil and Gas (2%): Extrusion welders seal secondary containment liners, reducing spill cleanup costs by 30%, per API standards.
Construction: Welders join foundation liners, extending building life by 15%, per ASTM D4068
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FAQ
Q1: What thickness of geomembrane can a welding gun weld?
A: The applicable thickness depends on the equipment model. Some machines may cover approximately 0.2–3.0 mm, but the exact range should be confirmed to meet the selected model and liner material.
Q2: How to maintain a geomembrane hot air welder?
A: The complete machine should be cleaned, greased, and placed in a dry place if it is not used. For PVC welding, the adhesions on hot wedge should be cleaned off if it is not used longer than 4 hours to preventwedge corrosion and service life being shortened.
Q3: What are the types of geomembrane welding guns?
A: The types of geomembrane welding guns include hot wedge welder, extrusion welder, hot air welder, fusion welder and handheld welder. Different types of geomembrane welding gun come in different specifications and models. When purchasing, the appropriate model should be selected based on the geomembrane thickness, welding requirements, and specific installation conditions.
Q4: What's in it for you when you choose us?
A: Certification: CE/ISO 9001/GRI-GM13 /ASTM D8580.
15-day delivery: Direct from our Shandong manufacturing base (FOB Qingdao).
Final inspection is performed before shipment.
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