Name: High-Performance LLDPE Smooth Geomembrane Sheet Liner
Availability: InStock

Reliable LLDPE Smooth Geomembrane Waterproof Liner Supplier

As an experienced LLDPE geomembrane manufacturer and supplier, Nuokun Geo produces smooth LLDPE liners for projects that require reliable waterproofing and seepage control. Our Smooth LLDPE Geomembrane is manufactured from virgin LLDPE resin using controlled extrusion blow molding or flat extrusion processes. This produces a homogeneous, continuous sheet with consistent thickness, good flexibility, and stable physical performance.

The smooth liner surface makes handling, alignment, inspection, and heat welding more convenient during installation. Its high elongation allows the material to adapt to uneven subgrades and moderate ground movement, while its low permeability provides a dependable barrier against water and other liquids.

From standard production to project-specific thickness and dimensions, we support different engineering requirements for ponds, reservoirs, landfills, wastewater facilities, tailings areas, and aquaculture projects.

Our Smooth LLDPE Geomembrane is produced from high-quality linear low-density polyethylene (LLDPE) resin on an automated production line. Controlled manufacturing processes help maintain consistent thickness, surface quality, and physical performance across production batches.

The products are manufactured and tested in accordance with applicable national and industry requirements, including GB/T 17643, with specifications available according to project requirements. Before shipment, finished rolls can be checked for key parameters such as dimensions, thickness, appearance, and other agreed quality requirements.

With export experience covering more than 20 countries and regions, including Vietnam, Brazil, South Africa, Iran, and Thailand, NK Geosynthetics supports customers with reliable LLDPE geomembrane solutions for ponds, water containment, wastewater facilities, landfills, and other small- and medium-scale seepage-control projects.

Types & Specifications

Item	Specification	Notes
Thickness	0.3mm – 3.0mm	Common: 0.5mm, 1.0mm, 1.5mm, 2.0mm
Width	1m – 8m	Customizable, commonly used 7m, 8m
Length	30m – 100m per roll	Depends on thickness
Tensile breaking strength	≥ 6 – 56N/mm	Compliant with GRI/ASTM standards
Elongation at Break	≥ 560%	High flexibility
Carbon Black Content	2% – 3%	Enhanced UV and anti-aging properties
Surface	Smooth / Textured	Single or double-sided texture
Standard	ASTM / GRI	International testing standards

Key Advantages

1. Smooth Surface & Low Friction

The smooth liner surface provides low surface friction, making the sheet easier to handle, unfold, align, and weld during installation. It is particularly suitable for flat or low-slope containment areas where a smooth liner surface is preferred.

2. High Flexibility & Elongation

LLDPE has excellent flexibility and high elongation at break. The liner can follow uneven subgrades and accommodate significant settlement or moderate ground movement, helping reduce the risk of cracking or stress concentration.

3. Excellent Stress Crack Resistance

The material has good resistance to stress cracking under long-term loading and environmental exposure. This helps maintain liner integrity in applications where the sheet may experience repeated deformation or installation stress.

4. Good Chemical Compatibility

LLDPE provides good resistance to many common acids, alkalis, salts, and other chemical media. It is suitable for a range of environmental, water containment, wastewater, and industrial applications, subject to project-specific chemical compatibility requirements.

5. Superior Low-Temperature Performance

The flexible structure remains suitable for use in cold environments and provides good resistance to low-temperature impact and deformation. This makes Smooth LLDPE Geomembrane a practical option for projects exposed to seasonal or consistently low temperatures.

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linear low-density polyethylene smooth geomembrane sheet

Typical Applications

1. Horizontal Seepage Control

Used as a bottom liner for reservoirs, landscape lakes, aquaculture ponds, and other flat containment areas. The smooth surface supports efficient installation and reliable liquid containment.

2. Landfill Closure & Temporary Covering

Suitable for landfill closure systems and temporary covers for waste piles or containment areas. The geomembrane provides an effective barrier against rainwater infiltration and liquid migration when combined with suitable geotextile protection.

3. Temporary Anti-Seepage Works

Ideal for applications that require relatively fast deployment, such as emergency pollution cofferdams, temporary wastewater ponds, and construction dewatering or sedimentation areas.

4. Irregular-Shaped Pond Liners

The high flexibility of LLDPE allows the sheet to conform to curved, uneven, or irregular pond profiles. It can be used for landscape lakes, reservoirs, absorption ponds, and other containment structures where rigid liners are difficult to install.

5. Secondary Containment & Emergency Response

Suitable for temporary or secondary containment where a flexible liner needs to be installed quickly to reduce the risk of liquid leakage or environmental contamination.

Installation & Welding

Proper installation is essential to achieving the intended seepage-control performance of a Smooth LLDPE Geomembrane liner. Because LLDPE is flexible and has high elongation, it can adapt well to uneven subgrades, but careful handling is still required during installation.

1. Prepare the Subgrade

Before installation, the subgrade should be properly compacted, smooth, and free from sharp stones, roots, debris, or other objects that could damage the liner. Any soft areas, standing water, or obvious uneven sections should be addressed before the geomembrane is deployed.

2. Unroll and Align the Liner

Unroll the geomembrane carefully in the planned installation direction. Avoid dragging the sheet directly over rough surfaces. Keep the material reasonably relaxed rather than pulling it excessively tight, allowing some flexibility for temperature changes and minor ground movement.

3. Control the Overlap

Adjacent sheets should be positioned with a consistent overlap suitable for the selected welding method and project requirements. Keep the overlap area clean, dry, and free from mud, dust, oil, or other contaminants before welding.

4. Perform a Trial Weld

Before production welding begins, carry out a trial weld using the same equipment and similar material conditions. Check the welding temperature, travel speed, pressure, and other parameters, then inspect the test seam to confirm that the settings are suitable.

5. Heat-Wedge Welding

For long straight seams, an automatic hot-wedge welding machine is commonly used. The machine heats and presses the overlapping LLDPE sheets together to create a continuous welded seam. Welding parameters should be adjusted according to material thickness, ambient temperature, and site conditions.

6. Inspect and Test the Seams

After welding, visually inspect the seams for wrinkles, burns, gaps, incomplete fusion, or other visible defects. Where required by the project specification, carry out non-destructive testing and destructive seam tests to verify weld integrity.

For complex areas, corners, penetrations, and details that are difficult to complete with an automatic wedge welder, an appropriate extrusion or handheld welding method may be used.

Installation Tip: Keep the liner clean and properly aligned throughout the process. Good subgrade preparation, controlled overlap, correct welding parameters, and careful seam inspection are the basic steps for building a reliable Smooth LLDPE Geomembrane liner system.

Packing And Delivery

FAQ

Q1: What is the difference between LLDPE and HDPE geomembrane?

A: The main difference is flexibility and elongation. Smooth LLDPE Geomembrane is generally more flexible and has higher elongation at break, allowing it to better follow uneven subgrades and accommodate moderate settlement or ground movement. This makes LLDPE a practical choice for ponds, reservoirs, irregular-shaped containment areas, and projects where ground deformation is a concern.

HDPE Geomembrane is stiffer and offers excellent tensile strength, chemical resistance, and dimensional stability. It is widely used in applications such as landfills, industrial containment, mining facilities, and other projects where high structural strength and chemical resistance are key requirements.

Q2: Is Smooth LLDPE Geomembrane suitable for aquaculture ponds?

A: Yes. Smooth LLDPE Geomembrane is widely suitable for aquaculture ponds because its flexible structure can adapt to the pond bottom and side slopes, while its low permeability helps reduce water loss through the soil.

The smooth surface is also easy to clean and maintain, which can be useful in pond management. It creates a clear barrier between the stored water and the surrounding soil, helping reduce direct contact between pond water and the underlying ground.

Q3: What guarantees do you get when you choose us?

A: Certification guarantee: CE/ISO 9001/GRI GT13 (17)

15-Day Lead Time: Direct supply from Shandong manufacturing base (FOB Qingdao Port)

Pre-production samples are always conducted before mass production;

Final inspection is always conducted before shipment;

If you have any questions about us and our products, please feel free to contact us.

Q4: Can we get some samples? Is there a charge?

A: Yes, we can provide samples for free, but we do not pay for the shipping.

If you place an order after confirming the sample, we will refund your shipping fee or deduct it from the order amount.

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