Geomembrana in HDPE

Product Definition

Geomembrana in HDPE is a high-density polyethylene impermeable liner engineered for containment, separation, and environmental protection in civil, mining, water, and waste management projects, offering long-term chemical resistance, structural stability, and controlled permeability under demanding engineering conditions.

Technical Parameters and Specifications

For professional engineering applications, geomembrana in HDPE must comply with standardized, verifiable technical parameters.

• Thickness range: 0.5 mm / 0.75 mm / 1.0 mm / 1.5 mm / 2.0 mm / 2.5 mm

• Density: ≥0.94 g/cm³

• Tensile strength at yield: ≥15 MPa

• Tensile elongation at break: ≥700%

• Puncture resistance: ≥500 N (CBR method)

• Carbon black content: 2.0–3.0%

• Carbon black dispersion: Grade 1–2

• Oxidative induction time (OIT): ≥100 min (standard)

• Permeability coefficient: ≤1.0 × 10⁻¹³ cm/s

Structure and Material Composition

Geomembrana in HDPE is a homogeneous polymeric sheet designed for impermeability and durability.

• Base Polymer: High-density polyethylene resin

• Stabilizer System: Carbon black for UV resistance

• Antioxidants: Thermal and oxidative aging control

• Surface Options:

• Smooth surface for general containment

• Textured or double-textured surface for slope stability

Manufacturing Process

The performance consistency of geomembrana in HDPE is directly related to its controlled manufacturing process.

1. Raw material batching and mixing of HDPE resin and additives

2. Extrusion through flat die or blown film system

3. Sheet calendering and thickness control

4. Surface texturing (if required)

5. Cooling, trimming, and winding

6. Inline thickness, density, and surface inspection

7. Finished roll packaging and batch identification

Industry Comparison

Application Scenarios

Geomembrana in HDPE is widely used across infrastructure and environmental engineering sectors.

• Distributors: Standard rolls for water and waste containment markets

• EPC contractors: Landfills, tailings dams, and industrial ponds

• Engineering consultants: Environmental barrier design

• Government projects: Water reservoirs and canal lining systems

Core Pain Points and Engineering Solutions

• Leakage risk: Solved by double-liner systems and quality welding

• Slope instability: Addressed using textured geomembrana in HDPE

• UV degradation: Controlled through carbon black stabilization

• Installation damage: Reduced via protective geotextile layers

Risk Warnings and Mitigation

Improper specification or installation of geomembrana in HDPE can compromise system integrity.

• Avoid installing over sharp or poorly compacted subgrades

• Do not weld under rain, dust, or extreme wind conditions

• Ensure qualified technicians perform seam welding

• Verify roll traceability and batch test reports

Procurement and Selection Guide

1. Define containment type and chemical exposure

2. Select thickness based on load and puncture risk

3. Determine surface type (smooth or textured)

4. Verify compliance with ASTM or GRI standards

5. Review manufacturing capacity and quality control

6. Request welding guidelines and installation manuals

7. Conduct pre-installation material testing

Engineering Case Application

In a municipal solid waste landfill project, a 2.0 mm double-textured geomembrana in HDPE was installed over a compacted clay liner and protective geotextile. The system covered 45,000 m² and achieved leak detection performance compliant with environmental regulations after five years of monitored operation.

FAQ

• Q1: What thickness is typical for landfills? A: Usually 1.5–2.0 mm.

• Q2: Is HDPE geomembrane UV resistant? A: Yes, with proper carbon black content.

• Q3: Can it resist chemicals? A: Yes, including acids and alkalis.

• Q4: What welding method is used? A: Hot wedge or extrusion welding.

• Q5: Is textured HDPE necessary on slopes? A: Recommended for stability.

• Q6: What is the service life? A: Up to 50 years in buried conditions.

• Q7: Can it be used in potable water? A: Yes, with certified grades.

• Q8: How is seam quality tested? A: Air pressure or vacuum box testing.

• Q9: Is HDPE recyclable? A: Yes, under controlled conditions.

• Q10: What standards apply? A: ASTM D5885, GRI GM13.

Call to Action

For detailed technical datasheets, engineering samples, welding guidelines, or project-based quotations related to geomembrana in HDPE, procurement and engineering teams are invited to request comprehensive technical documentation.

E-E-A-T Author Credentials

This article is prepared by a geosynthetics engineering specialist with over 15 years of experience in environmental containment systems, civil infrastructure projects, and international B2B procurement and specification support.