Geomembrane HDPE 2mm is a high-density polyethylene liner known for its exceptional durability, chemical resistance, and impermeability. Engineers and industries widely use it in environmental and civil engineering projects to serve as an effective barrier against liquids and gases. Its common applications include landfill liners, mining operations, water containment systems, and agricultural ponds. The Best Project Materials Co., Ltd (BPM geosynthetics) specializes in producing high-quality HDPE geomembranes, offering reliable solutions for seepage control and environmental protection. BPM’s Geomembrane HDPE 2mm products withstand harsh conditions, ensuring long-term performance in infrastructure and industrial applications. This versatile material plays a crucial role in sustainable development and resource management.
1. What is Geomembrane HDPE?
1.1 Composition of geomembrane HDPE
- Base material: High-density polyethylene (HDPE) resin: about 97%-99%, providing the main mechanical properties and chemical stability.
- Additives: Carbon black (2%-3%): enhances ultraviolet (UV) resistance and prevents aging.
- Antioxidant: Retards oxidative degradation of the material.
- Antistatic agent (optional): for special environments (e.g. mining).
1.2 Structure type:
- Smooth geomembrane HDPE: smooth surface, suitable for flat foundations, good welding performance.
- Rough Surface geomembrane HDPE: Surface texture increases the coefficient of friction, suitable for slopes or works requiring anti-slip (e.g. landfill slopes).
2. Geomembrane HDPE manufacturing process:
HDPE geomembrane is mainly produced by two kinds of processes:
2.1 Blow molding method (Blown Film Extrusion)
- Process: Geomembrane HDPE particles are melted and extruded through the ring die, forming a tubular membrane.
Blow into the compressed air to make the membrane expansion, cooling and flattening to form a double-layer geomembrane.
Cut into a single layer or keep a double layer (according to requirement).
- Features:
Geomembrane HDPE thickness uniformity is good, suitable for the production of thin films up to 1mm.
High production efficiency, but the width is limited by the diameter of the die head.
2.2 Calendering method (Calendering)
Process: Molten geomembrane HDPE is crushed into the specified thickness by several sets of high-temperature rollers.
After cooling and shaping, the rolls are wound.
- Geomembrane HDPE Characteristics:
Suitable for the production of thick geomembrane hdpe film (such as 1.5mm-3.0mm), higher mechanical strength.
Surface flatness is good, but equipment investment is large.
3. Quality standards and certification
Geomembrane HDPE need to comply with international or industry standards to ensure performance, common standards include:
3.1 International Standards
ASTM D6392 (American Society for Testing and Materials): Specifies the physical properties (e.g. tensile strength, tear resistance) of HDPE geomembranes.
GRI-GM13 (International Geosynthetics Institute): Specific requirements (e.g. permeability coefficient ≤ 1 x 10-¹³ cm/s) for geomembrane HDPE membranes for landfills.
ISO 9080: Assessment of long-term stress cracking resistance.
3.2 Chinese standards (GB Standard)
GB/T 17643-2011: Equivalent to ASTM, stipulates the technical parameters of HDPE geomembrane.
CJ/T 234-2006: Standard for HDPE geomembranes for landfills.
4. Geomembrane HDPE 2mm Structural differences between the two surface types
4.1 Smooth surface (Smooth)
Structural characteristics: completely flat, no physical texture, uniform thickness.
Production process: direct molding by blow molding or calendering without surface treatment.
4.2 Textured Structural characteristics:
Single Rough Surface: smooth on one side, raised texture (height 0.2-0.5mm) on the other side by embossing or sandblasting.
Double rough: textured on both sides, higher coefficient of friction.
Production process:
Embossing method: hot embossing rollers emboss the texture before the film cools down.
Co-extrusion method: rough layer material (e.g. HDPE + mineral powder) is added synchronously during extrusion.
5. Advantageous scenarios of 2mm smooth geomembrane
5.1 Large plane laying (e.g. reservoir bottom lining)
High welding efficiency (speed up to 5m/min)
5.2 Double-layer liner system
Smooth surface contact with geotextile to reduce friction damage (e.g. CCL composite liner).
6. Selection Suggestions
6.1 Mandatory selection of textured geomembrane HDPE 2mm case:
Slope >15° (GRI-GM19 slope stability test is required).
The contact surface is geotextile/sand (anti interface slip).
6.2 Situation where smooth membrane is selected:
Limited budget and flat foundations (e.g. breeding ponds).
Quick welding construction is required (projects with tight schedules).
Special tips: The manufacturer (such as BPM Geosynthetics) provide customized texture, such as diamond pattern (friction coefficient of 0.55) or stripe pattern (0.5), which can be selected according to the project requirements.
7. Performance verification under 2mm thickness
7.1 Textured geomembrane HDPE 2mm test standard:
ASTM D5321: Interface shear strength test (need ≥25kN/m²).
EN ISO 12957-1: Friction angle test (textured membrane usually ≥30°).
7.2 Smooth geomembrane HDPE test focus:
Weld strength (needs to be ≥ 90% of base material, ASTM D6392).
Conclusion: Whether or not a geomembrane HDPE 2mm needs to be textured depends on the slope, contact material and slip resistance requirements. Most severe projects choose a single textured 2mm geomembrane, balancing cost and safety.
8. 2mm HDPE Geomembrane Key Performance Indicators
Tensile strength (longitudinal/horizontal direction) reflects the tensile ability of the material to ensure that it will not break under mechanical stress in the project: Standard requirement: ≥25 MPa (ASTM D6693)
Elongation at break reflects the ductility of the material, adapt to the deformation of the foundation without cracking: Standard Requirements: ≥700%
The significance of puncture strength is to prevent sharp objects (such as gravel) puncture, to protect the integrity of seepage control: Standard requirement: ≥500 N (GRI-GM13)
Permeability coefficient is a measure of impermeability, very low permeability ensures no leakage of liquid/gas: Standard requirement: ≤1×10-¹³ cm/s (third-party testing required)
Core function: These indicators work together to ensure that the HDPE geomembrane will perform its seepage control function stably over a long period of time in harsh environments such as landfills and mines.
9. Key Applications and Usage Scenarios
HDPE geomembranes with a 2mm thickness are widely used in environmental protection, water conservancy, mining, and agriculture due to their excellent durability, chemical resistance, and impermeability.
9.1 Environmental Protection & Waste Containment
(1) Landfill Liners & Caps Function:
Prevents leachate (toxic liquid from waste) from contaminating soil and groundwater.
- Why 2mm?
Resists puncture from sharp waste materials.
Withstands long-term chemical exposure (acids, alkalis, organic solvents).
Meets strict regulatory standards (EPA, ASTM D7003).
(2) Hazardous Waste Storage
Used in industrial waste ponds, chemical storage basins.
2mm HDPE Geomembrane thickness ensures extra safety against leaks.
9.2 Water & Hydraulic Engineering
(1) Reservoirs & Canals
Prevents water seepage, improving storage efficiency.
Geomembrane HDPE 2mm Advantage:
Handles high water pressure better than 1mm geomembranes.
More durable against UV and weathering.
(2) Wastewater Treatment Lagoons
Contains sewage, industrial effluents.
Chemical resistance prevents degradation from harsh liquids.
9.3 Mining & Industrial Applications
(1) Tailings Ponds (Mining Waste Storage)
Why 2mm?
Resists abrasion & puncture from sharp mining residues.
Prevents toxic leakage (heavy metals, acids).
(2) Oil & Gas Industry
Used in secondary containment for fuel storage tanks.
Impermeable to hydrocarbons, reducing spill risks.
9.4 Agriculture & Aquaculture
(1) Fish & Shrimp Ponds
Prevents water loss and controls contamination.
2mm vs. Thinner Options:
More tear-resistant (handles equipment & animal movement).
Longer lifespan (20+ years).
(2) Irrigation Ponds
Stores water efficiently in dry regions.
9.5 Other Specialized Uses
Tunnel & Underground Waterproofing
Artificial Lakes & Decorative Ponds
Soil Remediation Projects (blocks pollutant migration)
10. Conclusion
As a premium choice for critical containment applications, the geomembrane HDPE 2mm delivers an optimal balance of mechanical strength, chemical resistance, and cost-effectiveness, making it the industry-preferred solution for demanding projects like landfill liners, mining tailings ponds, and large-scale water storage systems. Its proven durability (50+ year service life) and impermeability (≤10⁻¹³ cm/s) ensure reliable long-term performance even under extreme environmental stresses.
For engineering teams seeking high-quality, certified geomembranes, BPM company stands out as a trusted manufacturer, supplying ASTM/GRI-compliant 2mm HDPE geomembranes with rigorous quality control. Their products feature:
✔ UV-stabilized formulations for outdoor longevity
✔ Custom surface textures (smooth/rough) for slope stability
✔ Third-party tested mechanical and hydraulic properties
With extensive experience in global infrastructure projects, BPM Company provides technical support + customized solutions, ensuring geomembrane performance matches project specifications. Request samples or specifications today to evaluate their certified 2mm HDPE liners for your containment needs.
Need installation guidance or project-specific recommendations? BPM’s engineering team offers complimentary consultation services.
