Shandong Longxiang New Materials Co., Ltd.
Standard Certified By
2.0mm (80 mil) Smooth LLDPE Geomembrane | Heavy-Duty Flexible Liner for Mining & Reservoirs
Classification :
PRODUCT DETAILS
1. Product Overview
Extreme Durability Meets Ultimate Flexibility.
For projects that demand the physical toughness of a thick liner but cannot risk the stress cracking associated with rigid HDPE, our 2.0mm (80 mil) Smooth LLDPE Geomembrane is the singular solution.
This heavy-duty liner offers the same thickness and puncture resistance as standard mining liners but features a unique Linear Low-Density Polyethylene molecular structure. This allows it to absorb significant differential settlement and ground movement without rupturing, making it the safest choice for large-scale reservoirs, landfill caps, and mining containment on unstable subgrades.
2. Key Features
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80 mil (2.0mm) Armor: The substantial thickness provides exceptional puncture resistance against sharp rocks and construction loads, reducing the need for expensive sand bedding compared to thinner liners.
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Settlement Proof: With an elongation at break exceeding 800%, this liner acts like a tough elastic skin. It stretches to bridge voids caused by sinkholes or subsiding waste piles where rigid liners would fail.
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Arctic Grade Flexibility: Engineered to remain pliable in extreme cold. It resists thermal contraction stress, making it ideal for projects in Canada, Russia, and high-altitude regions.
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Easy Welding: The 2.0mm thickness provides ample material for a robust double-track hot wedge weld, ensuring high weld strength and easy air channel testing.
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Chemical Resistance: While flexible, it maintains excellent resistance to brine, saltwater, and general industrial wastewater.
3. Detailed Application Scenarios
Large Earthen Reservoirs & Dams
In massive water storage projects, the sheer weight of the water can cause the ground to settle over time. A 2.0mm Smooth LLDPE Liner provides the structural integrity to hold millions of gallons of water while accommodating these geological shifts, preventing catastrophic leakage.
Mining & Oil Field Frack Ponds
For "Frack Ponds" or produced water pits in the oil and gas industry, liners are often exposed to rough handling and heavy equipment. The 80 mil thickness withstands mechanical abuse, while the LLDPE material prevents environmental stress cracking (ESCR) typical in exposed conditions.
Landfill Caps (Final Cover)
The top of a landfill is constantly moving as waste decomposes. A 2.0mm LLDPE liner is heavy enough to sit flat without wind uplift issues (ballast effect) and flexible enough to settle with the trash mountain for decades.
Remediation Pads
For temporary soil treatment pads where heavy trucks dump contaminated soil, the 2.0mm thickness is essential to prevent tires from shredding the liner, while the flexibility ensures it conforms to the berms and drainage sumps.
4. Technical Specifications
| Property | Test Method | Unit | Typical Value (2.0mm LLDPE) |
| Material | - | - | Virgin LLDPE |
| Thickness | ASTM D5199 | mm (mil) | 2.00 mm (80 mil) |
| Density | ASTM D792 | g/cm³ | 0.915 - 0.939 |
| Tensile Strength (Break) | ASTM D6693 | N/mm | ≥ 53 (High Strength) |
| Elongation at Break | ASTM D6693 | % | ≥ 800% |
| Tear Resistance | ASTM D1004 | N | ≥ 150 |
| Puncture Resistance | ASTM D4833 | N | ≥ 480 (Heavy Duty) |
| Carbon Black Content | ASTM D1603 | % | 2.0 - 3.0 |
5. 2.0mm Comparison: LLDPE vs. HDPE
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Q: When should I choose 2.0mm LLDPE over 2.0mm HDPE?
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A: Choose 2.0mm LLDPE if your site has soft soil, potential for ground settlement, or requires a liner that is easy to fold and pre-fabricate.
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A: Choose 2.0mm HDPE only if the ground is perfectly compacted (like concrete) and your primary concern is extreme chemical resistance (e.g., strong acids in hazardous waste).
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Geomembrane FAQs
1.What is a geomembrane used for?
Geomembranes primarily serve as low-permeability barriers and are widely utilized in the base lining and capping of landfills, tailings dam containment, and the construction of landscape ponds and water reservoirs. In municipal and transportation engineering, they are frequently employed for tunnel waterproofing, basement damp-proofing, and roadbed reinforcement to prevent the seepage of liquids and hazardous substances, thereby safeguarding the safety of groundwater environments.
2. HDPE vs LLDPE vs PVC geomembrane: which should I choose?
Thanks to its exceptional chemical stability and UV resistance, HDPE is the preferred choice for long-term projects such as landfills. LLDPE offers superior flexibility and elongation properties, making it suitable for complex terrains and irregularly shaped containment applications. PVC, known for its excellent conformability, is frequently used in non-exposed applications—such as tunnels or underground structures—for leak repair and sealing purposes.
3. What thickness of geomembrane do I need for a pond or landfill liner?
The selection of thickness must be based on pressure testing results and specific geological conditions. Typically, a minimum thickness of 0.75 mm (30 mil) is recommended for landscape ponds. For high-risk projects such as landfills, the GRI-GM13 standard recommends a base liner thickness of no less than 1.5 mm (60 mil). If the site involves sharp rock fragments or is subject to extremely high hydrostatic pressure, the thickness should be increased to 2.0 mm, accompanied by the use of a protective geotextile layer.
4. What QA/QC documents should a geomembrane manufacturer provide?
Manufacturers are required to provide a Material Test Report (MTR) that includes batch tracking records and covers key performance indicators such as tensile properties, tear strength, carbon black content, and OIT (Oxidative Induction Time). Additionally, the documentation must include a Certificate of Conformity (COC) adhering to ISO/ASTM standards, reports on the raw resin materials used, and records of in-process monitoring data collected during manufacturing.
5. How are geomembrane seams welded and tested?
Dual-track thermal fusion welding is the industry-standard method; this process utilizes extrusion or a hot wedge to create a pair of parallel weld seams, leaving an air channel between them. Testing is categorized into non-destructive methods (such as vacuum box testing or air pressure testing, which ensure stable pressure within the air channel) and destructive methods (such as peel and shear tests), ensuring that the weld strength meets or exceeds 90% of the base material's standard value.
6. What is the service life of an HDPE geomembrane liner?
In a buried environment, a compliant HDPE geomembrane has a theoretical service life exceeding 100 years at a constant temperature of 20°C. When used in exposed applications, the service life is influenced by ultraviolet radiation and typically ranges between 20 and 30 years. Its durability depends primarily on the antioxidant content within its formulation and the rate at which these antioxidants are depleted under environmental stress.
We produce the following types of geomembranes:
Main Products
PROJECT CASES
APPLICATION AREAS
Geotechnical material series are widely used in various fields such as highways, railways, tunnels, water conservancy of reservoirs and canals, artificial lakes, environmental protection, sewage treatment, landfills, anti-seepage of tailings reservoir areas, and livestock breeding.
Water conservancy projects
Geosynthetics play a vital role in water conservancy projects such as dams and reservoirs, canals and channels, and riverbank protection.
Breeding industry
In the aquaculture industry, geosynthetics such as geomembranes and geotextiles can be used to create healthy aquaculture ponds, ensure stable water quality and reduce water resource consumption. All geosynthetics provided by can be customized according to customer needs.
Road construction
The geosynthetics such as geomembranes, geotextiles, geogrids, geocells, etc. provided by play an irreplaceable role from roadbed treatment to pavement protection, from drainage systems to environmental protection isolation.
Agricultural
In agricultural irrigation and biogas digester scenarios, geosynthetics such as geomembranes and geotextiles play a key role due to their respective characteristics. The products provided by Factory meet the standards and can be customized according to requirements.
Coastal Engineering
In coastal engineering, geosynthetics such as geobags, cement blankets, and geogrids play an important role in coastal engineering from coastal protection, structural reinforcement to slope stability, and effectively respond to the challenges brought by the complex geology and environment of coastal areas.
Environmental Protection
Factory provides customers with high-standard geosynthetics to meet their needs for building landfills.
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