Anti-seepage Composite Geomembrane

Product Definition

Anti-seepage Composite Geomembrane is a geosynthetic barrier system formed by combining a polymer geomembrane with one or more layers of geotextile through thermal or adhesive bonding. It is engineered to provide long-term seepage control while enhancing puncture resistance, stress distribution, and construction reliability in hydraulic and environmental projects.

Technical Parameters and Specifications

The following parameters represent commonly adopted engineering ranges for Anti-seepage Composite Geomembrane. Final specifications should be confirmed according to project design codes and site conditions.

• Composite Type: Geotextile + Geomembrane + Geotextile (double-sided) or single-sided

• Geomembrane Material: HDPE / LDPE / LLDPE / EVA

• Geomembrane Thickness: 0.3 mm – 1.5 mm

• Geotextile Type: Nonwoven needle-punched polypropylene or polyester

• Geotextile Mass: 200 – 800 g/m²

• Tensile Strength: ≥ 8–14 kN/m

• Elongation at Break: ≥ 50%

• Peel Strength: ≥ 30 N/cm

• Hydrostatic Pressure Resistance: ≥ 0.6 MPa

• Permeability Coefficient: ≤ 1 × 10⁻¹³ cm/s

• Service Temperature: -40°C to +80°C

Structure and Material Composition

Anti-seepage Composite Geomembrane adopts a layered structure to balance impermeability, protection, and constructability.

• Upper nonwoven geotextile layer for cushioning and puncture resistance

• Central geomembrane layer acting as the primary anti-seepage barrier

• Lower nonwoven geotextile layer for filtration and interface friction

• Stable bonding interface ensuring long-term layer integrity

Manufacturing Process

The manufacturing process focuses on bonding strength, thickness consistency, and hydraulic performance.

1. Selection of polymer resin and geotextile grades based on design requirements

2. Extrusion or calendering of the geomembrane core

3. Production and surface conditioning of nonwoven geotextiles

4. Thermal lamination or hot-melt bonding of composite layers

5. Online inspection of thickness, peel strength, and surface defects

6. Cooling, trimming, roll packaging, and factory testing

Industry Comparison

Application Scenarios

Anti-seepage Composite Geomembrane is widely used by EPC contractors, infrastructure developers, and material distributors.

• Earth dams and embankment seepage control

• Irrigation canals and water conveyance systems

• Reservoirs and artificial lakes

• Landfill liners and cover systems

• Mining tailings ponds and leach pads

Core Pain Points and Engineering Solutions

• High puncture risk from subgrade: Geotextile layers provide cushioning protection

• Unstable seepage performance: Continuous geomembrane ensures reliable impermeability

• Construction damage: Composite structure reduces installation defects

• Uneven settlement: Flexible layered design accommodates deformation

Risk Warnings and Mitigation Recommendations

• Ensure subgrade is smooth, compacted, and free of sharp objects

• Control welding temperature to avoid geomembrane damage

• Protect exposed materials from prolonged UV exposure

• Perform seam integrity and peel strength testing on site

Procurement and Selection Guide

1. Clarify seepage control targets and hydraulic pressure levels

2. Select geomembrane polymer based on chemical and temperature exposure

3. Determine geomembrane thickness according to design life

4. Choose geotextile mass based on puncture and load conditions

5. Request third-party laboratory test reports and certifications

6. Evaluate supplier manufacturing capability and project references

Engineering Case Example

In a large irrigation canal rehabilitation project, a double-sided Anti-seepage Composite Geomembrane with a 0.75 mm LLDPE core and 400 g/m² nonwoven geotextile layers was installed. The system significantly reduced seepage losses, shortened construction time, and demonstrated stable performance under seasonal temperature variations.

Frequently Asked Questions

• What is the main function? Long-term seepage control with added protection.

• Is it suitable for high water pressure? Yes, when properly designed.

• Does it replace separate geotextiles? In many projects, yes.

• Can it be welded on site? The geomembrane core is weldable.

• What thickness is commonly used? 0.5–1.0 mm for most hydraulic works.

• Is chemical resistance customizable? Yes, via polymer selection.

• Can it be installed on slopes? Yes, with anchoring design.

• How is quality verified? Tensile, peel, and permeability testing.

• What is the expected service life? Typically 20–30 years.

• Is third-party inspection recommended? Yes for critical infrastructure.

Call to Action

For project-specific quotations, technical datasheets, or engineering samples of Anti-seepage Composite Geomembrane, please submit your design parameters for professional technical evaluation and procurement support.

E-E-A-T Author Credentials

This article is prepared by geotechnical engineers and materials specialists with extensive experience in geosynthetics, hydraulic engineering, and environmental containment systems. All information is based on established engineering standards, laboratory-tested material data, and verified field applications to support informed B2B procurement decisions.