Dam Plastic HDPE Pond Liner Material

Product Definition

Dam Plastic HDPE Pond Liner Material is a high-density polyethylene geomembrane designed for    water containment, seepage control, and environmental protection in dams, reservoirs, ponds,    and hydraulic engineering projects. It provides long-term impermeability, chemical resistance,    and structural stability under demanding field conditions.

Technical Parameters and Specifications

The following technical parameters are commonly specified in dam and pond engineering tenders    and must comply with international geomembrane standards.

• Material: High-Density Polyethylene (HDPE)

• Thickness range: 0.5 mm – 3.0 mm

• Standard roll width: 5.0 m – 8.0 m

• Standard roll length: 50 m – 100 m

• Density: ≥ 0.94 g/cm³

• Tensile strength at yield: ≥ 15 MPa

• Elongation at break: ≥ 700%

• Puncture resistance: ≥ 480 N

• Carbon black content: 2.0% – 3.0%

• UV resistance: ≥ 90% retained after 1600 h exposure

• Service temperature range: -40°C to +60°C

Structure and Material Composition

Dam Plastic HDPE Pond Liner Material features a homogeneous single-layer structure engineered    for maximum impermeability and durability.

Material Composition Breakdown

• HDPE Resin: Primary structural component ensuring tensile strength and flexibility

• Carbon Black: Provides UV resistance and long-term weatherability

• Antioxidants: Prevent thermal and oxidative degradation

• Processing Stabilizers: Ensure consistent extrusion and uniform thickness

Manufacturing Process

The manufacturing process of Dam Plastic HDPE Pond Liner Material is highly controlled    to ensure uniform thickness, mechanical performance, and weldability on site.

Engineering Manufacturing Steps

1. HDPE resin and additives batch formulation

2. High-speed mixing and drying

3. Flat die or blown film extrusion

4. Calendering and thickness control

5. Surface embossing or smooth finishing

6. Online thickness and defect inspection

7. Roll cutting, labeling, and packaging

Automated extrusion lines, gravimetric dosing systems, and online scanning devices    are critical to meeting engineering-grade quality requirements.

Industry Comparison

HDPE pond liners are often compared with alternative geomembrane materials in dam construction.

Application Scenarios

Dam Plastic HDPE Pond Liner Material is widely specified across hydraulic and environmental projects.

• Distributors: Supplying standardized liner rolls for regional infrastructure projects

• EPC Contractors: Dams, reservoirs, irrigation canals, tailings ponds

• Engineering Firms: Seepage control design and material specification

• Project Owners: Long-term water containment and environmental compliance

Core Pain Points and Solutions

• Seepage leakage: HDPE’s low permeability ensures effective water containment

• UV degradation: Carbon black stabilized formulation extends outdoor service life

• Subgrade damage: Proper cushioning layers reduce puncture risk

• Joint failure: Hot wedge welding ensures consistent seam strength

Risk Warnings and Mitigation Strategies

Improper installation or material selection can result in liner failure.    Risks include inadequate subgrade preparation, insufficient seam testing,    and using non-certified materials.

Mitigation measures include geotechnical assessment, certified welding technicians,    non-destructive seam testing, and documented quality control procedures.

Procurement Selection Guide

1. Define hydraulic and environmental design requirements

2. Select liner thickness based on water depth and load

3. Confirm applicable standards and certifications

4. Evaluate chemical and UV exposure conditions

5. Review manufacturer production capacity and QC system

6. Request physical samples and test reports

7. Assess logistics and on-site welding support

Engineering Case Example

In a 120,000 m² agricultural reservoir project, 1.5 mm HDPE pond liner was installed    to control seepage and reduce water loss. The liner was hot-wedge welded on site,    followed by vacuum box testing, achieving long-term leak prevention under variable    water levels and seasonal temperature changes.

FAQ

• Q1: What thickness is commonly used for dam liners?
  A: 1.0–2.0 mm depending on design load.

• Q2: Is HDPE liner suitable for drinking water?
  A: Yes, with certified raw materials.

• Q3: How are seams joined on site?
  A: Hot wedge or extrusion welding.

• Q4: Can HDPE liner be exposed to sunlight?
  A: Yes, UV-stabilized grades are designed for exposure.

• Q5: What is the expected service life?
  A: Typically 20–50 years.

• Q6: Does HDPE liner resist chemicals?
  A: Yes, excellent resistance to most acids and alkalis.

• Q7: Is cushioning layer required?
  A: Recommended for rough subgrades.

• Q8: How is seam quality tested?
  A: Vacuum box or air pressure testing.

• Q9: Can liners be repaired after damage?
  A: Yes, by extrusion welding patches.

• Q10: Are custom roll sizes available?
  A: Yes, subject to production capacity.

Call to Action

For project-specific quotations, technical datasheets, or engineering samples of    Dam Plastic HDPE Pond Liner Material, please submit your design requirements,    project location, and required standards to our technical team.

E-E-A-T Author Credentials

This technical guide is authored by a geosynthetics engineering specialist with    over 15 years of experience in HDPE geomembrane manufacturing, dam seepage control,    and international EPC project support across water, mining, and environmental sectors.