Hdpe Geomembrane Pond Liner

Product Definition

HDPE geomembrane pond liner is a high-density polyethylene impermeable lining material engineered for water      containment, seepage control, and environmental protection in ponds, reservoirs, and aquaculture systems,      offering long-term chemical resistance, durability, and structural stability.

Technical Parameters and Specifications

Typical technical specifications of HDPE geomembrane pond liner used in engineering projects include:

• Raw material: High-Density Polyethylene (HDPE)

• Thickness range: 0.5 mm – 3.0 mm

• Density: ≥ 0.94 g/cm³

• Tensile strength at yield: ≥ 15 MPa

• Elongation at break: ≥ 700%

• Tear resistance: ≥ 200 N

• Puncture resistance: ≥ 500 N

• Carbon black content: 2.0 – 3.0%

• Carbon black dispersion: Grade 1 or 2

• Service temperature: -40°C to +60°C

• Design service life: ≥ 30–50 years (buried conditions)

Structure and Material Composition

The performance of HDPE geomembrane pond liner is defined by its material formulation and uniform structure:

• HDPE Resin Matrix: Provides impermeability and mechanical strength

• Carbon Black: Enhances UV resistance and weather durability

• Antioxidants: Prevent thermal and oxidative degradation

• Smooth or Textured Surface: Optional textures for slope stability

• Homogeneous Sheet Structure: Ensures consistent thickness and performance

Manufacturing Process

HDPE geomembrane pond liner is produced through controlled industrial extrusion processes:

1. Selection and inspection of virgin or qualified resin

2. Precise blending of carbon black and additives

3. High-temperature melting and homogenization

4. Flat-die or blown film extrusion

5. Thickness calibration and surface texturing (if required)

6. Cooling and stress relaxation

7. Online quality monitoring (thickness, defects)

8. Roll cutting, labeling, and protective packaging

Industry Comparison

Application Scenarios

HDPE geomembrane pond liner is widely adopted by EPC contractors, developers, and operators for:

• Aquaculture ponds and fish farms

• Irrigation reservoirs and water storage ponds

• Wastewater and effluent treatment lagoons

• Industrial process water containment

• Landscape and decorative ponds

• Mining and tailings ponds

Core Pain Points and Solutions

• Pain Point: Water leakage and seepage losses
           Solution: Continuous impermeable HDPE geomembrane pond liner

• Pain Point: Chemical attack from water or soil
           Solution: Excellent chemical resistance of HDPE material

• Pain Point: UV degradation in exposed conditions
           Solution: Carbon black stabilized formulation

• Pain Point: Installation damage and puncture
           Solution: High puncture and tear resistance with protective layers

Risk Warnings and Mitigation

Potential risks and recommended mitigation measures include:

• Subgrade damage: ensure smooth, compacted base with geotextile cushion

• Improper welding: use certified hot wedge or extrusion welding

• Thermal expansion: allow slack during installation

• UV exposure during storage: store rolls covered before installation

Procurement and Selection Guide

1. Define pond size, depth, and design life

2. Select appropriate liner thickness

3. Confirm chemical compatibility with contained water

4. Check compliance with relevant standards

5. Review third-party test reports

6. Evaluate welding and installation support

7. Assess supplier production capacity and delivery time

Engineering Case Study

In a commercial aquaculture project, a 1.5 mm HDPE geomembrane pond liner was installed over a compacted soil      base with nonwoven geotextile protection. After four years of continuous operation, inspections confirmed      zero leakage and stable water quality, meeting design and environmental requirements.

FAQ

• What thickness is suitable for fish ponds? Commonly 0.75–1.5 mm.

• Is it safe for aquaculture? Yes, inert and non-toxic.

• Can it be exposed to sunlight? Yes, with carbon black protection.

• How are seams joined? By thermal welding.

• Does it resist algae and bacteria? Yes, smooth surface limits adhesion.

• Can it be repaired? Yes, by patch welding.

• Is it suitable for cold climates? Yes, down to -40°C.

• What is the roll width? Typically 5–8 meters.

• Is a geotextile required? Recommended for protection.

• Does it meet environmental regulations? Yes, widely approved.

Call to Action

To request pricing, technical datasheets, installation guidance, or project samples of HDPE geomembrane pond liner,      please provide your project details for professional evaluation.

E-E-A-T Author Statement

This article is authored by geosynthetics engineers and environmental materials specialists with over 20 years      of experience in pond lining systems, water containment engineering, and international infrastructure projects.