Textured HDPE Geomembrane

Product Definition

Textured HDPE Geomembrane is a high-density polyethylene impermeable liner with engineered surface roughness on one or both sides, designed to increase interface friction and slope stability in containment and lining systems used in demanding civil and environmental engineering projects.

Technical Parameters and Specifications

Textured HDPE Geomembrane is manufactured to meet internationally recognized geomembrane performance standards for high-risk containment applications.

• Thickness Range: 1.0 mm – 3.0 mm

• Density: ≥ 0.940 g/cm³

• Tensile Strength at Yield: ≥ 15 MPa

• Tensile Strength at Break: ≥ 20 MPa

• Elongation at Break: ≥ 700%

• Puncture Resistance: ≥ 500 N

• Tear Resistance: ≥ 250 N

• Carbon Black Content: 2.0% – 3.0%

• Oxidative Induction Time (Standard OIT): ≥ 100 minutes

• Oxidative Induction Time (High Pressure OIT): ≥ 400 minutes

• Service Temperature Range: -40°C to +60°C

• Standard Roll Width: 5.8 m – 7.0 m

• Surface Texture Type: Single-sided or double-sided

Structure and Material Composition

The structural design of Textured HDPE Geomembrane combines mechanical strength with enhanced interfacial friction.

• HDPE Base Resin: Virgin high-density polyethylene for high stiffness and chemical resistance

• Textured Surface Layer: Engineered asperities to increase friction angle

• Carbon Black: UV protection and long-term aging resistance

• Antioxidant Package: Improves thermal and oxidative stability

Manufacturing Process

Textured HDPE Geomembrane is produced using controlled extrusion and surface modification processes.

1. Virgin HDPE resin inspection and formulation

2. High-temperature flat-die extrusion

3. Inline or post-extrusion texturing using nitrogen injection or embossing technology

4. Automated thickness and surface roughness monitoring

5. Controlled cooling to lock surface texture

6. Roll winding under controlled tension

7. Mechanical, physical, and durability testing

Industry Comparison

Application Scenarios

Textured HDPE Geomembrane is specified by EPC contractors, engineering consultants, and distributors for:

• Municipal and hazardous waste landfill slopes

• Mining heap leach pads and tailings facilities

• Steep-sided wastewater treatment lagoons

• Secondary containment for industrial tanks

• Earth dam upstream and downstream lining

• High-risk containment systems requiring shear resistance

Core Engineering Pain Points and Solutions

• Interface sliding on slopes: Textured surface increases friction angle

• Liner instability under load: High tensile strength resists deformation

• Chemical exposure: HDPE provides excellent chemical resistance

• Long-term aging: Antioxidant-stabilized formulation extends service life

Risk Warnings and Mitigation Recommendations

• Ensure compatibility testing with adjacent geosynthetics

• Control welding temperature to avoid damaging textured surface

• Perform interface shear testing for critical slope designs

• Avoid excessive dragging that may flatten surface texture

• Implement rigorous QA/QC during installation

Procurement and Selection Guide

1. Define slope angle and stability requirements

2. Select single-sided or double-sided texture based on interface conditions

3. Determine thickness according to load and regulatory standards

4. Verify compliance with GRI GM13 or equivalent specifications

5. Request interface friction and shear test data

6. Evaluate supplier manufacturing technology and consistency

7. Plan installation and quality assurance procedures

Engineering Case Application

In a mining heap leach project, a 2.0 mm double-sided Textured HDPE Geomembrane was installed on a 3H:1V slope beneath a geotextile protection layer. Interface shear testing confirmed adequate stability, and the system has maintained liner integrity under sustained ore loading.

Frequently Asked Questions (FAQ)

• What is the main advantage of textured HDPE? — Improved slope stability.

• Is it suitable for flat areas? — Yes, but often unnecessary.

• Can it be welded like smooth HDPE? — Yes, with proper parameter control.

• What texture types are available? — Single-sided and double-sided.

• Does texture reduce chemical resistance? — No.

• What thickness is common for landfills? — Typically 1.5–2.5 mm.

• Is interface shear testing required? — Recommended for slope designs.

• Does texture affect service life? — No, if properly stabilized.

• Can it be used with geotextiles? — Yes, commonly.

• What standards apply? — GRI GM13 and relevant ASTM tests.

Call to Action

For project-specific quotations, detailed technical datasheets, interface shear test reports, or engineering samples of Textured HDPE Geomembrane, please submit your project parameters to our technical sales and engineering team.

E-E-A-T Author Credentials

This article is authored by a senior geosynthetics engineer with over 15 years of experience in HDPE geomembrane design, manufacturing quality control, and EPC project support for landfill, mining, and infrastructure applications worldwide.