Geomembrana in Hdpe

Product Definition

Geomembrana in HDPE is a high-performance impermeable liner manufactured from high-density polyethylene, designed for fluid containment, environmental protection, and separation in civil, mining, and industrial engineering projects requiring long-term durability and chemical resistance.

Technical Parameters and Specifications

The following parameters represent commonly accepted engineering ranges for Geomembrana in HDPE used in infrastructure and environmental projects:

• Raw Material: Virgin HDPE resin

• Color: Black (carbon black content 2.0%–3.0%)

• Thickness: 0.5 mm – 3.0 mm

• Density: ≥ 0.94 g/cm³

• Tensile Strength at Yield: ≥ 15 MPa

• Elongation at Break: ≥ 700%

• Puncture Resistance: ≥ 500 N

• Oxidative Induction Time (OIT): ≥ 100 min (standard)

• Operating Temperature: -40°C to +60°C

• Design Service Life: Over 50 years under proper installation

Structure and Material Composition

Geomembrana in HDPE typically adopts a homogeneous or co-extruded structure composed of:

• HDPE Base Polymer: Provides mechanical strength and low permeability

• Carbon Black Dispersion: Enhances UV resistance and weatherability

• Antioxidants and Stabilizers: Improve thermal aging resistance

• Optional Textured Surface: Increases interface friction for slope applications

Manufacturing Process

The manufacturing of Geomembrana in HDPE follows an industrial-grade process with strict quality control:

1. Raw Material Compounding: HDPE resin blended with additives

2. Sheet Extrusion: Flat-die or blown-film extrusion equipment

3. Thickness Calibration: Automatic control systems ensure uniformity

4. Surface Texturing: Embossing rollers for textured geomembranes

5. Controlled Cooling: Minimizes internal stress

6. Quality Inspection: Mechanical, dimensional, and dispersion testing

7. Rolling and Packaging: Protected for transport and storage

Industry Comparison

Application Scenarios

Geomembrana in HDPE is widely adopted by distributors, EPC contractors, and engineering firms in:

• Municipal and hazardous waste landfills

• Mining leach pads and tailings containment

• Industrial wastewater lagoons

• Water reservoirs and irrigation canals

• Agricultural and aquaculture ponds

• Secondary containment for oil and chemical facilities

Core Pain Points and Engineering Solutions

• Leakage Control: Achieved through ultra-low permeability HDPE structure

• UV Exposure: Carbon black protects against long-term sunlight degradation

• Chemical Attack: HDPE resists acids, alkalis, and hydrocarbons

• Slope Stability: Textured geomembranes improve friction performance

Risk Warnings and Mitigation Measures

• Install protective geotextile to prevent puncture from subgrade

• Ensure certified welding operators for seam quality

• Control thermal expansion during hot-weather installation

• Perform vacuum or air-pressure seam testing

Procurement and Selection Guide

1. Define project application and containment requirements

2. Select thickness based on load and puncture risk

3. Choose smooth or textured surface configuration

4. Verify compliance with project specifications

5. Review laboratory test reports and certifications

6. Confirm installation guidance and technical support

Engineering Case Study

In a mining heap leach project, a 2.0 mm Geomembrana in HDPE was installed over a compacted subgrade and geotextile cushion. Dual-track hot wedge welding was applied, followed by non-destructive air pressure testing. The liner has maintained containment integrity under acidic leachate exposure for more than nine years.

Frequently Asked Questions

• Q1: What thickness is most commonly used?
  A: 1.5–2.0 mm.

• Q2: Is Geomembrana in HDPE UV resistant?
  A: Yes, due to carbon black.

• Q3: Can it be welded on site?
  A: Yes, using hot wedge or extrusion welding.

• Q4: Is it suitable for potable water?
  A: With appropriate certification.

• Q5: How long is its service life?
  A: Over 50 years with correct installation.

• Q6: Does texture affect permeability?
  A: No, only surface friction.

• Q7: Can it be repaired after damage?
  A: Yes, with localized patch welding.

• Q8: What testing is required?
  A: Tensile, puncture, OIT, seam tests.

• Q9: Is recycled HDPE recommended?
  A: Not for critical containment.

• Q10: How is it delivered?
  A: Rolled and wrapped for protection.

Call to Action

For project quotations, detailed technical documentation, or engineering samples of Geomembrana in HDPE, please submit your specifications to obtain professional technical and procurement support.

E-E-A-T Author Credentials

This content is prepared by geosynthetics engineers with over 15 years of experience in HDPE geomembrane manufacturing, quality control, and large-scale environmental and infrastructure projects, supporting EPC contractors and international distributors.