iso certified hdpe geomembrane

ISO certified HDPE geomembranes are high-density polyethylene sheets manufactured under internationally recognized ISO quality management systems, ensuring consistent mechanical, chemical, and thermal performance. Designed for industrial containment, environmental protection, and mining applications, these geomembranes offer long-term impermeability, puncture resistance, and regulatory compliance for large-scale engineering projects.

Technical Parameters and Specifications

Key Properties

• Material: High-Density Polyethylene (HDPE, PE100)

• Thickness: 0.75–3.0 mm

• Tensile strength: ≥15 MPa (ASTM D6693)

• Elongation at break: ≥700%

• Density: ≥0.94 g/cm³

• Carbon black content: 2–3%

• Oxidative induction time (OIT): ≥100 min

• Hydraulic conductivity: ≤1×10⁻¹³ m/s

• Chemical resistance: Resistant to acids, alkalis, and solvents

ISO Compliance

• ISO 9001 – Quality management system

• ISO 14001 – Environmental management

• ISO 45001 – Occupational health & safety

• ASTM D5199, D6693 – Material testing standards

Structure and Material Composition

• HDPE layer: Provides impermeable barrier

• Optional geotextile reinforcement: Enhances puncture resistance

• Composite system: Combines hydraulic containment with mechanical durability

Manufacturing Process

1. Raw Material Selection

HDPE resin is selected for ISO-certified purity, melt flow index, and carbon black content to ensure compliance with international standards.

2. Extrusion

Flat-die or blown-film extrusion lines produce uniform sheets. Key parameters controlled include melt temperature, extrusion speed, and cooling rate to maintain consistent thickness and mechanical properties.

3. Geotextile Lamination (Optional)

Needle-punched or woven geotextiles are laminated to HDPE sheets to provide additional puncture and stress resistance in demanding applications.

4. Quality Assurance

ISO-certified testing includes tensile, puncture, OIT, hydraulic conductivity, and chemical resistance tests to guarantee performance consistency for industrial projects.

Industry Comparison

Application Scenarios

• Distributors: Supply ISO-certified sheets to large projects

• EPC Contractors: Ensure installation meets performance and regulatory requirements

• Engineering Consultants: Specify liners for industrial and environmental compliance

• Importers/Wholesalers: Procure consistent quality material in bulk

Core Pain Points and Solutions

• Puncture from rough subgrade: Solved with geotextile reinforcement

• Seam integrity: Certified welding techniques and QA

• UV exposure: Carbon black ensures long-term resistance

• Chemical exposure: HDPE formulation resists wide range of chemicals

Risk Warnings and Mitigation

Improper subgrade preparation, low-quality resin, or unqualified installers may cause failures. Mitigation includes ISO-certified suppliers, batch-specific QA, and on-site supervision by experienced engineers.

Procurement and Selection Guide

1. Define project containment requirements

2. Select appropriate HDPE thickness and geotextile reinforcement

3. Verify ISO and ASTM certifications

4. Request QA and batch test reports

5. Assess supplier production capacity and technical support

6. Plan installation methodology and on-site supervision

7. Schedule post-installation testing and documentation

Engineering Case Study

An ISO-certified HDPE geomembrane (2.0 mm thickness) was installed in a 60,000 m² tailings pond. Laminated with 500 g/m² geotextile, the liner system achieved complete impermeability, resisted punctures during construction, and met environmental regulatory standards.

FAQ

• What is the thickness range? 0.75–3.0 mm

• Can geotextile be laminated? Yes, for additional protection

• Expected service life? Over 30 years

• Chemical resistance? High resistance to acids, alkalis, and solvents

• Seam testing methods? Vacuum box, spark, air pressure testing

• UV protection required? Yes, for exposed applications

• Custom roll sizes? Available based on supplier capability

• Third-party testing recommended? For large-scale regulatory projects

• Compliance standards? ISO 9001, 14001, 45001, ASTM D5199, D6693

• Installation supervision needed? Yes, by qualified personnel

CTA – Commercial and Technical Requests

Request quotations, ISO certification documents, technical datasheets, or engineering samples of ISO-certified HDPE geomembranes for procurement and EPC projects directly from certified suppliers.

E-E-A-T Author Statement

This article is authored by experienced geosynthetics engineers with ISO-compliant project experience in industrial, mining, and wastewater containment systems, providing reliable technical guidance for B2B procurement and engineering applications.