PE Geomembrane for Reliable Seepage Control

PE Geomembrane is engineered as a durable low-permeability barrier for projects where reliable seepage control is essential. Its main advantages include:

1. Excellent Seepage Control

The dense polyethylene structure provides low permeability, helping prevent water and liquid from penetrating into the surrounding soil. It is suitable for reservoirs, ponds, wastewater facilities, and containment systems.

2. High Tensile and Puncture Resistance

PE Geomembrane can withstand tensile stress and mechanical loads during transportation, installation, and service. Proper thickness selection and subgrade preparation can further reduce the risk of puncture and damage.

3. Good Chemical Resistance

The material offers good resistance to many acids, alkalis, salts, and other chemical substances, making it suitable for wastewater treatment, landfill leachate containment, and mining applications.

4. Reliable Welding Performance

Adjacent geomembrane sheets can be joined by hot-wedge welding or extrusion welding. Properly welded seams can form a continuous barrier and reduce leakage risks at panel connections.

5. UV and Weather Resistance

High-quality PE geomembrane formulated with appropriate additives can provide good resistance to sunlight, oxidation, and outdoor weathering, making it suitable for exposed or semi-exposed applications.

6. Long-Term Seepage Protection

With suitable material selection, proper installation, qualified welding, and appropriate protective layers, PE Geomembrane can provide long-term seepage-control performance for demanding engineering projects.

In 2012, the Therme Geinberg thermal resort in Austria developed a large landscape water project consisting of two luxury ponds integrated into the five-star resort environment. The ponds required a reliable waterproofing and seepage-control system that could adapt to different areas and operating conditions. The project was selected aspproximately 7,000 m² of 1.5 mm smooth PE-VLD geomembrane  as the main liner and installed across the pond bottom and side areas to create a continuous low-permeability barrier, helping reduce water seepage and protect the surrounding ground.

The project also used approximately 100 m² of slip-resistant PE-VLD geomembrane near the wooden walkways and stairs, providing higher surface friction for visitor access areas. The maximum pond depth was approximately 2.4 m, and the water temperature could be adjusted to meet seasonal conditions. This project demonstrates that PE geomembrane can be used not only for conventional water-storage and containment projects, but for sophisticated landscape and recreational water facilities requiring reliable waterproofing, durability, flexibility, and customized surface performance.

1. Surface Preparation

Before welding, clean the geomembrane surface and remove dust, moisture, mud, oil, and other contaminants. The overlapping area should be flat, dry, and free from wrinkles or foreign materials. Any damaged areas should be repaired before welding.

2. Panel Alignment and Overlap

Place adjacent PE Geomembrane panels according to the installation layout. The membrane should remain naturally relaxed without excessive tension. The overlap width should generally be controlled according to the welding equipment and project specifications, with sufficient width reserved for a continuous and reliable seam.

3. Equipment Inspection and Parameter Setting

Before formal welding, inspect the welding machine, heating system, pressure rollers, temperature controller, and power supply. Set the welding temperature, travel speed, and pressure according to the membrane thickness, material characteristics, ambient temperature, and site conditions.

4. Trial Welding

Before production welding, carry out trial welding on a small piece of the same geomembrane material. Check whether the temperature, welding speed, and pressure are properly matched. The trial seam should then be tested to confirm its welding quality before large-scale welding begins.

5. Main Seam Welding

For long straight seams, an automatic hot-wedge welding machine is commonly used. The heating wedge heats the overlapping surfaces to the required temperature, while the pressure rollers simultaneously press the softened layers together. As the machine moves forward at a controlled speed, the two membrane sheets are continuously fused to form a uniform seam.

6. Detail and Corner Welding

Corners, T-joints, penetrations, pipe connections, and other complicated areas require additional attention. Automatic welding equipment may not be suitable for every detail, so a handheld extrusion welder or other appropriate equipment can be used according to the membrane system and project requirements.