PRODUCT DETAILS

1. Product Overview

The Ultimate "Form-Fitting" Liner for Rigid Structures.

Lining a concrete tank, a tunnel, or a complex industrial sump requires a material that behaves differently than a standard landfill liner. Our 1.5mm (60 mil) Smooth LDPE Geomembrane offers the highest degree of flexibility and pliability in the polyethylene family.

Designed to act as a robust, independent bladder inside rigid structures, this 60 mil liner easily molds to sharp corners, sumps, and pipe penetrations without bridging or stressing. It is the premier solution for retrofitting leaking concrete tanks and waterproofing underground infrastructure where structural movement is expected.

2. Key Features

• Maximum Conformability: LDPE is softer than both HDPE and LLDPE. It conforms tightly to the substrate surface, minimizing dead space and stress points, effectively acting like a second skin for your structure.

• 60 mil (1.5mm) Durability: While flexible, it is not flimsy. The 1.5mm thickness provides substantial physical strength and puncture resistance, suitable for long-term industrial containment and hydrostatic pressure.

• High Elongation & Stress Relaxation: With elongation exceeding 800%, this liner absorbs expansion, contraction, and differential settlement of the host structure (e.g., cracked concrete) without rupturing.

• Excellent Chemical Resistance: Provides a reliable barrier against water, wastewater, agricultural runoff, and many industrial chemicals (consult our chemical resistance chart for specifics).

• Easy Detail Welding: The softer polymer structure makes detailed corner welding and pipe booting significantly easier and more secure than with rigid membranes.

3. Detailed Application Scenarios

Internal Lining of Concrete/Steel Tanks (Retrofitting)

Old concrete cisterns and steel tanks often develop cracks or corrosion. Sandblasting and recoating is temporary. Installing a 1.5mm Smooth LDPE Liner provides a permanent "tank-within-a-tank" solution. Its flexibility allows it to be pre-fabricated or installed on-site to fit rectangular or cylindrical shapes perfectly.

Tunnel & Basement Waterproofing

In tunneling (NATM or Cut-and-Cover), the waterproofing layer must withstand the rough shotcrete surface and ground shifting. 1.5mm LDPE is widely used as the waterproof membrane behind the final concrete lining due to its toughness and ability to stretch.

Industrial Sumps & Secondary Containment

For intricate containment areas with many pipes, plinths, and footings, rigid HDPE is a nightmare to install. Smooth LDPE can be cut and welded around these obstacles effortlessly, ensuring a leak-proof seal even in the tightest corners.

Root Barriers (Bamboo Control)

For aggressive bamboo or tree roots, a thick barrier is needed. 1.5mm provides a heavy-duty physical shield that directs roots downwards, protecting foundations and hardscapes.

4. Technical Specifications

5. Quality Assurance and Testing

We fully recognize that seepage control projects are critical to ecological safety; therefore, we have established a comprehensive quality control system that spans the entire product lifecycle:

Raw Material Control: We utilize only 100% virgin LLDPE resin from globally renowned brands, strictly avoiding the use of any recycled materials.

In-line Monitoring: Our production lines are equipped with fully automated computerized thickness gauges and defect detection systems to ensure uniform and consistent thickness in every roll of geomembrane produced.

Laboratory Testing: In strict compliance with ASTM GRI-GM17 standards, we conduct batch-wise sampling tests to verify tensile strength, elongation at break, tear resistance, puncture resistance, and carbon black content, providing an official Certificate of Analysis (COA) for every batch.

6. Installation and Seam Treatment (Overview)

Professional installation and high-quality welding are the keys to the success of any seepage control project:

Subgrade Preparation: Prior to laying, the subgrade must be thoroughly cleared, ensuring it is level, compacted, and free of sharp stones, tree roots, or other debris that could puncture the geomembrane.

Anchor Trench Construction: Anchor trenches are excavated in accordance with design specifications to securely anchor the edges of the geomembrane, preventing slippage.

Thermal Welding: For large-area seams, we employ dual-track hot wedge welding machines to create double seams featuring an internal air channel for subsequent air pressure testing; for intricate details, corners, and repairs, single-track extrusion welding is utilized.

Quality Acceptance: Upon completion of welding, all seams undergo a 100% airtightness inspection using non-destructive testing methods (such as air pressure tests and vacuum box tests) to ensure a completely leak-proof seal.

7. Requesting a Quote

As a professional manufacturer of geosynthetic materials, we are dedicated to providing you with cost-effective products and comprehensive technical engineering support.

If you are seeking high-quality LLDPE geomembranes for your project, or require customized specifications, product samples, or the latest export pricing, please do not hesitate to contact our international operations team.