The Premier Impermeable Barrier for Demanding Containment Applications

Product Specification

Our Smooth HDPE Geomembrane is the industry-standard solution for creating highly reliable, long-term fluid and vapor barriers. Engineered from premium high-density polyethylene resins and manufactured under strict quality control, it delivers unmatched durability, chemical resistance, and impermeability for the most critical environmental, hydraulic, and industrial containment projects worldwide.

Key Features & Benefits

1. Superior Impermeability & Barrier Performance:

   • Ultra-Low Permeability: Provides an exceptionally effective barrier against liquids (water, leachate, chemicals) and gases (vapors, methane), with permeability coefficients typically < 1 x 10⁻¹³ cm/s.

   • Continuous Seam Integrity: Factory and field seams are thermally fused (wedge or extrusion welding) to create monolithic, leak-tight bonds of equal or greater strength than the parent sheet.

2. Exceptional Durability & Longevity:

   • Outstanding Chemical Resistance: Resistant to a vast array of aggressive chemicals, acids, alkalis, salts, and industrial fluids. Ideal for landfills, mining, and chemical containment.

   • High Stress Crack Resistance (SCR): Formulated and tested to resist slow crack growth under long-term stress, ensuring decades of reliable service (ASTM D5397, FNCT).

   • Robust UV & Weather Resistance: High-quality carbon black stabilization provides superior protection against ultraviolet (UV) degradation and extreme temperature fluctuations (-60°C to +80°C).

   • Biological Resistance: Immune to degradation from bacteria, fungi, and root penetration.

   • Proven Service Life: Designed for service lives exceeding 50+ years under appropriate conditions.

3. High Mechanical Strength:

   • Excellent Tensile Strength & Elongation: Withstands installation stresses, settlement, and hydrostatic pressure without tearing or puncturing easily (ASTM D6693).

   • Strong Tear & Puncture Resistance: Resists damage from subgrade irregularities or cover material during installation and service (ASTM D1004, D4833).

   • Dimensional Stability: Maintains shape and performance under load.

4. Cost-Effective & Efficient Installation:

   • Lightweight & Flexible: Available in large rolls (up to 8m+ wide) for faster deployment, fewer field seams, and reduced labor costs compared to rigid alternatives.

   • Adaptable: Conforms well to subgrade contours and structural details.

   • Proven Installation Methods: Well-established thermal welding techniques ensure consistent, high-quality seams.

5. Environmental & Economic Advantages:

   • Protects Groundwater & Soil: Prevents contamination migration, safeguarding vital environmental resources.

   • Reduces Liability: Meets stringent regulatory requirements for containment applications.

   • Sustainable Solution: Contributes to pollution prevention and resource conservation. Often contains recycled HDPE content (specify if applicable).

Applications

• Landfill Liners & Caps: Base liners, sidewall liners, final covers, leachate ponds, temporary covers.

• Mining & Heap Leach Pads: Solution containment, process ponds, tailings impoundments, closure caps.

• Water & Wastewater Containment: Potable water reservoirs, evaporation ponds, treatment lagoons, anaerobic digesters, aquaculture ponds.

• Industrial & Secondary Containment: Chemical storage areas, tank liners, spill containment berms, brine ponds.

• Aquaculture & Decorative Water Features: Pond and lagoon liners.

• Tunnels & Infrastructure: Waterproofing membranes, cut-off walls.

• Agriculture: Irrigation canal liners, manure storage.

• Energy: Fly ash pond liners, biogas digesters, solar pond liners.

Technical Specifications

• Material: High-Density Polyethylene (HDPE)

• Surface Texture: Smooth (Double-Sided)

• Thickness: [e.g., 0.75 mm (30 mil), 1.0 mm (40 mil), 1.5 mm (60 mil), 2.0 mm (80 mil), 2.5 mm (100 mil)] (Specify available gauges)

• Density: ≥ [e.g., 0.940 g/cm³] (ASTM D1505)

• Melt Index: [e.g., 0.10 - 0.25 g/10 min] (ASTM D1238, Condition 190/2.16) (Specify range)

• Carbon Black Content: [e.g., 2.0 - 3.0%] (ASTM D4218) - Uniformly dispersed for UV protection

• Tensile Properties (Typical @ Yield):

  • Strength, MD & XMD: ≥ [e.g., 20 MPa / 2900 psi] (ASTM D6693 Type IV)

  • Elongation, MD & XMD: ≥ [e.g., 700%] (ASTM D6693 Type IV)

• Tear Resistance (Typical): ≥ [e.g., 125 N/mm] (ASTM D1004)

• Puncture Resistance (Typical): ≥ [e.g., 350 N] (ASTM D4833 / D5514)

• Stress Crack Resistance (SCR):

  • Notched Constant Tensile Load (NCTL): ≥ [e.g., 500 hours @ 100% stress] (ASTM D5397)

  • Full Notch Creep Test (FNCT): ≥ [e.g., 500 hours @ 4.0 MPa] (ISO 16770)

• Permeability Coefficient (Water Vapor): < [e.g., 1.0 x 10⁻¹³ cm/s] (ASTM E96)

• UV Resistance: ≥ [e.g., 12 months outdoor exposure with ≤ 50% retained strength] (ASTM D7238 / GRI GM13)

• Seam Strength: ≥ [e.g., 90%] of parent material strength (ASTM D6392, D5820)

• Roll Dimensions: Width: [e.g., 7.0 m, 7.5 m, 8.0 m]; Length: [e.g., 100 m, 150 m, 200 m] (Specify standard sizes)

• Standards Compliance: ASTM Standards (D6392, D6693, D7176, etc.), GRI-GM13, GRI-GM19, EPA Subtitle D, NSF-61 (for potable water), EN, and other relevant national/international specifications. (Specify applicable standards)

Why Choose Our Smooth HDPE Geomembrane?

• Uncompromising Quality: Manufactured from virgin, high-grade HDPE resins using state-of-the-art flat die or blown film extrusion technology under rigorous ISO quality management.

• Certified Performance: Backed by comprehensive third-party testing reports for all critical properties (SCR, Tensile, UV, etc.).

• Consistency Guaranteed: Strict process controls ensure uniform thickness, material properties, and carbon black dispersion throughout every roll.

• Global Expertise: Trusted by engineers and contractors for the world's most demanding projects across diverse climates and terrains.

• Technical Support & Training: Dedicated team provides specification guidance, design assistance, and certified welding training programs.

• Sustainable Manufacturing: Commitment to environmental responsibility (mention specific initiatives if applicable, e.g., recycled content, energy efficiency).

Installation Overview

1. Subgrade Preparation: Critical step! Achieve a smooth, compacted, stable subgrade free of sharp objects, rocks > [e.g., 20mm], voids, and debris. Geotextile protection layer often recommended.

2. Panel Deployment: Unroll panels according to design layout, allowing for thermal expansion/contraction. Minimize traffic on unprotected geomembrane.

3. Thermal Welding: Certified welders use specialized wedge or extrusion welding equipment to create continuous, destructive-tested seams. Seam testing (non-destructive & destructive) is mandatory.

4. Detail Work: Meticulous welding around penetrations, pipes, and structures using extrusion fillet welding or boot details.

5. Cover & Protection: Install designated cover soil or protection layer promptly as per design specifications to shield from UV and mechanical damage.