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LLDPE Geomembrane Liner

LLDPE geomembrane’s full name is “Liner Low-Density Polyethylene Geomembrane”, LLDPE geomembrane is manufactured from virgin polyethylene resins, offering great flexibility and outstanding resistance to low temperature and ultraviolet exposure. High-quality and economical, it is intended for long life and exhibits a high degree of strength and durability.

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    What is LLDPE Geomembrane ?

    LLDPE geomembrane’s full name is “Liner Low-Density Polyethylene Geomembrane”, LLDPE geomembrane is manufactured from virgin polyethylene resins, offering great flexibility and outstanding resistance to low temperature and ultraviolet exposure. High-quality and economical, it is intended for long life and exhibits a high degree of strength and durability.


    Applications

    • Irrigation ponds, canals, ditches & water reservoirs
    • Gravel Driveway, drainage, road construction.
    • Landfill cells, covers, & caps

    Testing Standard

    • GRI GM 6/9/11/13/14/19
    • ASTM D792/D1004/D1238/D1505/D1603/D3895
    • ASTM D4218/D4833/D5199/D5397/D5596

    Difference between HDPE and LLDPE

    difference betwwen hdpe and lldpe geomembrane

    Technical Specification

    Thickness: 0.3-3 mm ( 12-120 mils), Material: High-quality HDPE. Price from $0.5 SQM

    CJ/T 234-2006 Standard (equivalent to US GRI-GM13 standard)
    Thickness (mm)0.7511.251.522.53
    Density(g/cm³)≥0.939
    Tensile yield strength N/mm≥11≥15≥18≥22≥29≥37≥44
    Tensile fracture strength N/mm≥20≥27≥33≥40≥53≥67≥80
    Yield Elongation %≥12
    Elongation at break %≥700
    Right angle tear load N≥93≥125≥156≥187≥249≥311≥374
    Puncture resistance strength N≥240≥320≥400≥480≥640≥800≥960
    Resistance to environmental stress cracking≥300
    Carbon black content(%)2.0-3.0
    Carbon black dispersibilityOut of 10 data points, there should be no more than 1 level 3, and levels 4 and 5 are not allowed.
    Atmospheric pressure oxidation induction time (OIT) (min)Induction time of atmospheric pressure oxidation ≥100
    Induction time of high-pressure oxidation ≥400
    85 ℃ thermal aging (atmospheric pressure OIT retention rate after 90 days)≥55
    UV resistance (OIT retention rate after 1600 hours of UV irradiation) %≥50
    GB/T17643-2011 Standard
    Thickness0.30.50.7511.251.522.53
    Density(g/cm³)≥0.940
    Tensile yield strength N/mm≥4≥7≥10≥15≥16≥20≥26≥33≥40
    Tensile fracture strength N/mm≥6≥10≥15≥20≥25≥30≥40≥50≥60
    Yield Elongation %≥11
    Elongation at break %≥600
    Right angle tear load N≥34≥56≥84≥115≥140≥170≥225≥280≥340
    Puncture resistance strength N≥72≥120≥180≥240≥300≥360≥480≥600≥720
    Carbon black content(%)2.0-3.0
    Carbon black dispersibilityOut of 10 data points, there should be no more than 1 level 3, and levels 4 and 5 are not allowed.
    Atmospheric pressure oxidation induction time (OIT) (min) ≥60
    Low temperature impact embrittlement performancePass
    Dimensional stability(%)±2.0

    Technical Notes

    1. LLDPE is a very technical product to work with. It must be installed by certified welding technicians using specialized welding equipment to ensure performance.

    2. Installations are temperature and poor weather-sensitive.

    3. 40 mil HDPE liner requires extra effort to ensure that the subgrade is in excellent condition. It is suitable as an upgrade from products like the 20 mil RPE for larger installations and is an excellent secondary containment liner on multi-layer systems (for example; subgrade, geotextile layer, 40 mil

    4. HDPE layer, drainage net layer, 60 mil HDPE layer, geotextile layer, fill.)

    5. 60 mil HDPE liner is the staple of the industry and is suitable for most applications.

    6. 80 mil HDPE liner is a thicker design for more aggressive subgrades.

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