HDPE & LLDPE Geomembrane Liners for Stormwater Detention, Landfill & Mining
Robust HDPE and LLDPE geomembranes for landfill cells, heap leach pads, wastewater containment, and secondary containment. Designed to meet GRI GM13/GM17 and key ASTM/ISO performance standards with options for smooth, textured, reflective (white/black), and conductive liners for leakage detection.
Why Choose Our Geomembranes
- Proven barrier performance with extremely low hydraulic conductivity typical of HDPE liners in engineered systems.
- High chemical resistance against acids, alkalis, salts, and many industrial process liquids.
- UV-stabilized with 2–3% carbon black for long-term outdoor exposure.
- Weldable & repairable: hot wedge and extrusion welding deliver strong, inspectable seams.
- Fast deployment using wide rolls (up to ~8 m/26 ft class) to minimize field seams.
- Custom Sizing for Tanks: We can pre-cut or pre-fabricate liners to match the specific dimensions of your detention tank design, reducing on-site welding time.
Materials & Surface Options
HDPE (GRI GM13)
HDPE geomembrane offers best-in-class chemical resistance and durability for landfills, mining and long-term containment, available in smooth or textured (one- or two-sided) surfaces with thickness from 0.75–3.0 mm (30–120 mil) and UV-stabilized formulation with density ≥ 0.940 g/cc per GM13.
LLDPE (GRI GM17)
LLDPE geomembrane provides higher flexibility and conformance to subgrade for settlement-prone areas, lagoons and cold-weather placement, supplied smooth or textured with 0.75–3.0 mm (30–120 mil) thickness and tested to GM17 with supporting ASTM/ISO reports.
White/Black Co-extruded
The white-top/black-core co-extruded liner reduces heat absorption and helps control wrinkles on exposed work while maintaining long-term UV durability, and can be produced in either HDPE or LLDPE.
Conductive Geomembrane
A built-in conductive layer enables spark-testing electrical leak location (ELL) for rapid QA/QC on exposed liners, offered in smooth or textured finishes and suited to CQA-critical containment projects.
Technical Specifications (ASTM/ISO) — Select Thickness
| Property | Test Method | Value (Metric) | Imperial |
| Thickness (min. avg.) | ASTM D5199 | 0.80 mm | 31.5 mil |
| Density (min.) | ASTM D1505 / D792 | ≥ 0.940 g/cc | — |
| Tensile @ Yield (Type IV) | ASTM D6693 | ≈ 22 N/mm | ≈ 126 lb/in |
| Tensile @ Break (Type IV) | ASTM D6693 | ≈ 38 N/mm | ≈ 216 lb/in |
| Elongation @ Yield / Break | ASTM D6693 | ≈ 12% / ≈ 700% | ≈ 12% / ≈ 700% |
| Tear Resistance | ASTM D1004 | ≥ 160 N | ≥ 36 lbf |
| Index Puncture | ASTM D4833 | ≥ 430 N | ≥ 97 lbf |
| Stress Crack Resistance (SP-NCTL) | ASTM D5397 App. | ≥ 500 h | ≥ 500 h |
| Oxidative Induction Time (Std OIT) | ASTM D3895 | ≥ 100 min | ≥ 100 min |
| High-Pressure OIT (HP-OIT) | ASTM D5885 | ≥ 400 min | ≥ 400 min |
| Carbon Black Content / Dispersion | ASTM D4218 / D5596 | 2–3% / Category 1–2 | — |
| Melt Flow Index (190°C/5 kg) | ASTM D1238 | ≤ 1.0 g/10 min | ≤ 1.0 g/10 min |
| Seam Strength — Peel / Shear | ASTM D6392 | Pass (film tear bond / cohesive) | Pass |
| Textured Asperity Height (if textured) | GM13 Proc. / ASTM D7466 | ≈ 0.5–1.0 mm | ≈ 20–40 mil |
| Interface Direct Shear (note) | ASTM D5321 | Specify by project (soil/geotextile) | — |
| Hydraulic Conductivity (design) | — | ~1×10⁻¹³ m/s (near-impermeable) | ~1×10⁻¹⁵ cm/s |
| Property | Test Method | Value (Metric) | Imperial |
| Thickness (min. avg.) | ASTM D5199 | 1.00 mm | 40 mil |
| Density (min.) | ASTM D1505 / D792 | ≥ 0.940 g/cc | — |
| Tensile @ Yield (Type IV) | ASTM D6693 | ≈ 22 N/mm | ≈ 126 lb/in |
| Tensile @ Break (Type IV) | ASTM D6693 | ≈ 42 N/mm | ≈ 240 lb/in |
| Elongation @ Yield / Break | ASTM D6693 | ≈ 12% / ≈ 700% | ≈ 12% / ≈ 700% |
| Tear Resistance | ASTM D1004 | ≥ 175 N | ≥ 39 lbf |
| Index Puncture | ASTM D4833 | ≥ 460 N | ≥ 103 lbf |
| Stress Crack Resistance (SP-NCTL) | ASTM D5397 App. | ≥ 500 h | ≥ 500 h |
| Oxidative Induction Time (Std OIT) | ASTM D3895 | ≥ 100 min | ≥ 100 min |
| High-Pressure OIT (HP-OIT) | ASTM D5885 | ≥ 400 min | ≥ 400 min |
| Carbon Black Content / Dispersion | ASTM D4218 / D5596 | 2–3% / Category 1–2 | — |
| Melt Flow Index (190°C/5 kg) | ASTM D1238 | ≤ 1.0 g/10 min | ≤ 1.0 g/10 min |
| Seam Strength — Peel / Shear | ASTM D6392 | Pass (film tear bond / cohesive) | Pass |
| Textured Asperity Height (if textured) | GM13 Proc. / ASTM D7466 | ≈ 0.5–1.2 mm | ≈ 20–47 mil |
| Interface Direct Shear (note) | ASTM D5321 | Specify by project (soil/geotextile) | — |
| Hydraulic Conductivity (design) | — | ~1×10⁻¹³ m/s | ~1×10⁻¹⁵ cm/s |
| Property | Test Method | Value (Metric) | Imperial |
| Thickness (min. avg.) | ASTM D5199 | 1.50 mm | 60 mil |
| Density (min.) | ASTM D1505 / D792 | ≥ 0.940 g/cc | — |
| Tensile @ Yield (Type IV) | ASTM D6693 | ≈ 22 N/mm | ≈ 126 lb/in |
| Tensile @ Break (Type IV) | ASTM D6693 | ≈ 40 N/mm | ≈ 228 lb/in |
| Elongation @ Yield / Break | ASTM D6693 | ≈ 12% / ≈ 700% | ≈ 12% / ≈ 700% |
| Tear Resistance | ASTM D1004 | ≥ 187 N | ≥ 42 lbf |
| Index Puncture | ASTM D4833 | ≥ 480 N | ≥ 108 lbf |
| Stress Crack Resistance (SP-NCTL) | ASTM D5397 App. | ≥ 500 h | ≥ 500 h |
| Oxidative Induction Time (Std OIT) | ASTM D3895 | ≥ 100 min | ≥ 100 min |
| High-Pressure OIT (HP-OIT) | ASTM D5885 | ≥ 400 min | ≥ 400 min |
| Carbon Black Content / Dispersion | ASTM D4218 / D5596 | 2–3% / Category 1–2 | — |
| Melt Flow Index (190°C/5 kg) | ASTM D1238 | ≤ 1.0 g/10 min | ≤ 1.0 g/10 min |
| Seam Strength — Peel / Shear | ASTM D6392 | Pass (film tear bond / cohesive) | Pass |
| Textured Asperity Height (if textured) | GM13 Proc. / ASTM D7466 | ≈ 0.5–1.5 mm | ≈ 20–60 mil |
| Interface Direct Shear (note) | ASTM D5321 | Specify by project (soil/geotextile) | — |
| Hydraulic Conductivity (design) | — | ~1×10⁻¹³ m/s | ~1×10⁻¹⁵ cm/s |
Applications
Chemically resistant HDPE/LLDPE liners for heap-leach pads, solution ponds and ADR areas; white/black reduces heat in arid sites.
Reservoirs, canals and irrigation ponds; design to EN 13361/13362 where applicable.
Process water, lagoons, secondary containment and tank farms; check chemical compatibility for specific media.
Impermeable LLDPE wrapping for geocellular tanks. Ensures watertight detention systems and zero leakage for water reuse projects.
Seaming, Testing & QA/QC
- Seaming: Dual-track hot-wedge welding for production seams; extrusion welding for details, patches, and tie-ins.
- Destructive Testing: Peel & shear per ASTM D6392 on field coupons.
- Non-destructive Testing: Vacuum box (ASTM D5641) and air-channel pressure test (dual-track seams); spark/EL for conductive liners (ASTM D7240/D7007).
- Leak Location: Electrical surveys for covered/exposed liners per ASTM D7007/D7702.
- Process Control: ≥ 97% virgin resin with 2–3% carbon black; inline thickness control; routine MQC to GRI GM13/GM17.
- Systems & Documentation: ISO 9001/14001/45001 certified manufacturing systems; roll maps, labels, and COA/QA available upon request.
Certificates of Analysis (CoA), conformance test results, and factory audits can be provided upon request as part of submittals.
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