When containment runs over slopes, smooth geomembrane slips: the cover soil, the waste or the water push the sheet down the incline and compromise the stability of the works. This textured HDPE geomembrane —also called textured liner or rough geomembrane— solves that problem with a relief surface on both sides that multiplies interface friction. Manufactured by Moltexo with professional-grade virgin resins in gauges from 4000 to 8000 (1.0 to 2.0 mm), it is designed for landfills, mining and steep-walled reservoirs where slope stability is audited: never as a temporary solution.
Key benefits
- Superior interface friction: texture on both sides with an asperity height ≥ 0.40 mm (ASTM D7466), which increases the friction angle against soil and other geosynthetics and keeps the cover stable on steep slopes.
- Certifiable slope stability: verifiable direct shear behavior per ASTM D5321 / D6243, the data required by the stability calculation in landfill cells and leach pads.
- Same UV and chemical resistance as the smooth version: carbon black content of 2.0 to 3.0 % (ASTM D1603) and OIT retention after UV aging, to withstand years under the direct Caribbean sun without degrading.
- HDPE mechanical durability: resistance to tensile stress, puncture, tear and stress cracking (ESCR) in accordance with the GRI-GM13 family of specifications for textured geomembrane.
- Careful Moltexo manufacturing: professional-grade virgin polymer, individual minimum thickness with controlled tolerance and verified ASTM tests on every gauge.
Applications and typical uses
- Lining of slopes and inclined walls in sanitary landfill cells and secure landfills.
- Leach pads (leach pads) and tailings deposits in mining projects.
- Reservoirs, dams and oxidation ponds with steep slopes.
- Final cover systems (capping) where the topsoil must hold on the sheet without slipping.
Quality and durability
Each variant meets the reference tests for textured HDPE: asperity height per ASTM D7466, tensile properties per ASTM D6693 and stress crack resistance (ESCR) per ASTM D5397, with the same UV protection as the smooth line. The texture is produced integrally during manufacturing —it is not a smooth sheet onto which a surface relief is printed— so the relief is not crushed under load nor lost over time. Moltexo also controls the individual minimum thickness with a −10 % tolerance on each roll, a requirement that simply does not apply to low-cost materials.
What sets it apart from a common construction-grade black plastic?
The real difference lies in the raw material and the additives. A common black plastic uses recycled resins and lacks specialized UV antioxidants; under the Caribbean sun it loses flexibility within a few months and cracks. This geomembrane uses virgin polymer with 2.0-3.0% carbon black verified by ASTM D1603 and OIT additives with 50% retention after 1600 hours of UV aging. It is not the same product nor does it last the same.
Does it withstand contact with fuels, agricultural acids, and fertilizers?
HDPE has broad chemical resistance and handles diluted fuels, lubricants, common liquid fertilizers, saline solutions, and water with organic matter from agricultural or fish-farming operations well. For highly concentrated acids, pure aromatic hydrocarbons, or chlorinated solvents, it is best to validate compatibility on a case-by-case basis before installation, especially in secondary containment of industrial tanks where exposure is prolonged.
Is it the same as a PVC sheet or a waterproofing tarp?
No. Waterproof tarps and PVC liners are softer materials with plasticizers that migrate over time and shorten their service life under sun exposure; they are suitable for temporary uses or short-term covers. This HDPE geomembrane is a monolithic high-density polyethylene sheet without plasticizers, designed for decades of service under permanent UV radiation. The difference becomes obvious from the first year of real exposure.
Still have questions?
Ask us and we will gladly help you with whatever you need.
| Material y construcción | |
|---|---|
| Material | Polietileno de alta densidad (HDPE) virgen |
| Acabado de superficie | Texturizada |
| Mandril | Plástico rígido |
| Dimensiones y formato | |
| Espesor nominal | 1 mm (0.040 in) — ASTM D5199 |
| Altura de asperezas | 0.25 mm (0.0098 in) — ASTM D7466 |
| Resistencias y rendimiento | |
| Resistencia al desgarro | 125 N (28.1 lbf) — ASTM D1004 |
| Elongación a la rotura | 100 % — ASTM D6693 Type IV |
| Elongación al límite elástico | 12 % — ASTM D6693 Type IV |
| Resistencia a la punción | 267 N (60.0 lbf) — ASTM D4833 |
| Resistencia a tracción a la rotura | 10 N/mm (57.1 lbf/in) — ASTM D6693 Type IV |
| Resistencia a tracción al límite elástico | 15 N/mm (85.7 lbf/in) — ASTM D6693 Type IV |
| Durabilidad y protección | |
| Contenido de negro de carbón (rango) | 2.0–3.0 % — ASTM D1603 |
| Dispersión de negro de carbón | 9 de 10 vistas en categorías 1-2 (menos de 1 en categoría 3) — ASTM D5596 |
| Protección UV | Sí (alta) |
| Resistencia a la fisuración por esfuerzo (ESCR) | 500 h — ASTM D5397 |
| Resistencia UV (retención OIT alta presión 1600 h) | 50 % — ASTM D5885 |
| Resistencia UV (retención OIT estándar 1600 h) | 50 % — ASTM D3895 |
| Retención de OIT alta presión (90 días a 85°C) | 80 % — ASTM D5721/D5885 |
| Retención de OIT estándar (90 días a 85°C) | 55 % — ASTM D5721/D3895 |
| Tiempo de inducción a la oxidación (OIT) alta presión | 400 min — ASTM D5885 |
| Tiempo de inducción a la oxidación (OIT) estándar | 100 min — ASTM D3895 |
| Propiedades fisicoquímicas | |
| Densidad | 0.940 g/cm³ (58.7 lb/ft³) — ASTM D1505/D792 |
| Presentación y embalaje | |
| Presentación | Rollo de 5.8 m (19 ft) de ancho y 100 m (328 ft) de largo |
Official MOLTEXO warranty
What's covered
Confirmado el defecto: sustitución o devolución del valor pagado.
What's not covered
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