HDPE geomembrane is a flexible polymer film material made of polyethylene resin as raw material, with carbon black, anti-aging agent, antioxidant, UV absorber and other materials added, produced by three-layer co-extrusion blow molding or calendering process. The specifications of 0.5mm and 0.75mm are more widely used in small and medium-sized water conservancy projects and agricultural irrigation systems.
Geomembrane thickness specifications
0.5mm geomembrane: suitable for general water conservancy project anti-seepage, such as ditches, farmland irrigation, artificial ponds, etc.;
0.75mm geomembrane: suitable for medium water pressure environment, such as small reservoirs, dam cover or wetland enclosure.
Properties | Test Method | GMSH050 | GMSH075 | GMSH100 | GMSH150 | GMSH300 |
■ Thickness | ASTM D5199 | 0.50 mm | 0.75 mm | 1.00 mm | 1.50 mm | 3.00 mm |
■ Density | ASTM D1505 | 0.940 g/cc | 0.940 g/cc | 0.940 g/cc | 0.940 g/cc | 0.940 g/cc |
Tensile Properties | ||||||
■ Yield strength ■ Break strength ■ Yield elongation ■ Break elongation | ASTM D6693 Type IV
| 7 kN/m 13 kN/m 12% 700% | 11 kN/m 20 kN/m 12% 700% | 15 kN/m 27 kN/m 12% 700% | 22 kN/m 40 kN/m 12% 700% | 41 kN/m 82 kN/m 12% 700% |
■ Tear Resistance | ASTM D1004 | 62 N | 93 N | 125 N | 187 N | 375 N |
■ Puncture Resistance | ASTM D4833 | 160 N | 240 N | 320 N | 480 N | 960 N |
■ Stress Crack Resistance | ASTM D5397 | 500 hrs | 500 hrs | 500 hrs | 500 hrs | 500 hrs |
■ Carbon Black Content | ASTM D1603 | 2.0% | 2.0% | 2.0% | 2.0% | 2.0% |
■ Carbon Black Dispersion | ASTM D5596 | For 10 different views:9 in Categories 1 or 2 and 1 in Category 3 | ||||
■ Oxidative Induction Time (OIT) | ASTM D3895 | 100 min. | 100 min. | 100 min. | 100 min. | 100 min. |
■ UV Resistance High Pressure OIT retained after 1600hrs |
ASTM D5885 |
50% |
50% |
50% |
50% |
50% |
Dimensions | ||||||
■ Roll Width (m) | 7 | 7 | 7 | 7 | 7 | |
■ Roll Length (m) | 420 | 280 | 210 | 140 | 50 | |
Product performance characteristics
Excellent anti-seepage performance: extremely low water vapor permeability, meeting national anti-seepage standards.
Strong chemical stability: resistant to corrosion by corrosive media such as acids, alkalis, salts, and oils.
Anti-aging and UV resistance: suitable for exposed use and high temperature and strong light environments.
High tensile strength and good elongation: able to adapt to certain deformation and resist uneven settlement.
Simple construction, hot melt welding: can achieve leak-free joints through hot melt welding machines.
Environmentally friendly and safe: using non-toxic raw materials, in line with drinking water engineering safety standards.
Typical application scenarios of geomembranes
Reservoir and reservoir anti-seepage;
Geomembranes have become standard as anti-seepage layers. 0.5mm and 0.75mm HDPE geomembranes can effectively prevent water leakage, maintain water level stability, and avoid water resource waste due to their excellent water pressure resistance and chemical corrosion resistance. In areas with complex geological conditions such as mountainous or sandy terrain, geomembranes can also adapt to certain uneven foundation settlements to ensure the integrity and durability of the anti-seepage system.
Lining of farmland irrigation channels;
The lining treatment of HDPE geomembranes with a thickness of 0.5mm or 0.75mm can significantly improve the anti-seepage effect of the channel, reduce leakage losses, and improve irrigation efficiency. This type of geomembrane is easy to construct and can greatly shorten the construction period. It is especially suitable for farmland transformation and water-saving agricultural construction projects.
Artificial lakes and landscape water bodies;
0.75mm geomembrane is both beautiful and functional. It can not only effectively prevent water leakage and maintain water volume, but also has good UV resistance and can be used for a long time in a bare environment. In addition, some landscape projects will also use colored films (such as green and blue) to integrate with the landscape environment.
Dam anti-seepage and dam foundation reinforcement;
0.75mm geomembrane can be used as a stable waterproof barrier between the main anti-seepage layer and the dam body soil layer, effectively control the seepage path, prevent soil erosion inside the dam body, and improve the safety and stability of the entire embankment system.
Fishpond geomembrane Customized Service:
Specification customization: HDPE geomembrane liner with different heights, weld distances, sheet thicknesses, colors, etc. can be customized according to customer needs.
Connector customization: Connectors with different materials and specifications can be customized according to customer needs.
Packaging customization: Different packaging methods can be customized according to customer needs, such as roll packaging, pallet packaging, etc.
Production scenario:
Raw material preparation: Select high-quality HDPE raw materials and undergo strict quality inspection.
Sheet production: Process HDPE raw materials into sheets.
Ultrasonic welding: Use advanced ultrasonic welding equipment to weld the sheets into a three-dimensional mesh structure.
Quality inspection: Strict quality inspection of finished products to ensure that the products meet national standards and customer requirements.
Shipping scenario:
Logistics and transportation: Use professional logistics and transportation methods to ensure that products are delivered to customers safely and promptly.
On-site guidance: Provide professional on-site guidance services to assist customers in product laying and construction.
Certificates:
Product quality certification: Passed ISO9001 quality management system certification, CE certification, etc.
Product test report: Provide product test reports issued by authoritative organizations.
FAQ:
Q: How to choose the right geomembrane liner?
A: Consider impermeability: HDPE has the strongest impermeability and is suitable for highly polluted environments.
Consider flexibility: LLDPE and PVC are more suitable for complex terrains.
Chemical resistance: HDPE is acid and alkali resistant and suitable for the chemical industry.
UV resistance: Black HDPE has the best UV resistance.
Q: What is the construction process of geomembrane liner?
A: Foundation treatment: Clean the site to ensure that it is flat and free of sharp objects.
Laying the liner: Unfold according to design requirements to avoid wrinkles.
Welding/bonding: Use hot melt welding (HDPE/LLDPE) or adhesive bonding (PVC/EPDM).
Quality inspection: Conduct spark detection or air pressure testing to ensure no leakage.
Protective layer coverage: Lay geotextile or sand and gravel protective layer to prevent mechanical damage.
Q: How to detect the anti-seepage effect of geomembrane liner?
A: Visual inspection: Observe whether there are damage, holes or welding defects.
Spark detection (applicable to conductive geomembranes): detect tiny leaks.
Vacuum box detection: negative pressure test on welds.
Hydraulic pressure test (applicable to pools): inject water to observe leakage.
Q: How long is the service life of geomembrane liner?
A: HDPE liner: more than 50 years (under buried conditions).
Q: How to repair damaged geomembrane liner?
A: Small holes: use special patches + hot air welding or adhesives.
Large-scale damage: re-weld new membrane after cutting.
Weld crack: clean and re-weld.
PET Filament Nonwoven Geotextile
PET filament nonwoven geotextile is a non-woven fabric made of polyester (PET) through spunbond process. It uses continuous filament fibers, has the characteristics of high strength, good creep resistance, excellent durability, etc., and is widely used in various civil engineering, water conservancy engineering, environmental engineering and other fields.
