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Low Linear Density Polyethylene Geomembrane

More flexible than its HDPE alternative, LLDPE material provides greater elongation and maluablility making the LLDPE geomembrane easier to work with particularly when forming around corners or obscure angles. High in chemical resistance, LLDPE is ideal for attenuation tanks, SUDS, lagoons, lakes and ponds.

Our range of high quality impermeable geomembranes are manufactured to current European standards by an industry leading Geomembrane manufacturer.

Rolls of LLDPE should be stored on stable/level ground and stacked not more than five rolls high, with no other material stacked on top. The rolls can be stored outdoors when packaged, but should be protected from exposure to UV.

Applications

  • Attenuation ponds and lagoons
  • Sustainable Urban Drainage Systems (SUDS)
  • Lakes and ponds

Our technical team can advise on product selection appropriate to the application and full installation method statements.

We can supply the suitable tapes for lapped and taped jointed situations or we can offer a full design, supply and installation option providing the client with the comfort that the selected system will be installed correctly ensuring long term performance of the installed Geomembrane.

Functions

Protection

Stress reduction layer to prevent or reduce damage

Reinforcement

Resists stresses or reduces deformations

Drainage

Collects and transports fluids within its thickness

LLDPE specification

Properties Test method Unit LLDPE G/G
0.75 1.0
Surface     Smooth both sides
Thickness (min. ave) ASTM D 5199 mm 0.75 1.0
Lowest individual of 10 values -10% -10%
Density (max) ASTM D 1505 g/cm2 0.939 0.939
Tensile properties (min. ave.) Break strength ASTM 6693 type IV kN/m 20 30
Break elongation % 800 800
2% Modulus (max.) ASTM D 5323 kN/m 370 420
Tear Resistance (min. ave) ASTM D 1004 N 70 100
Puncture Resistance (min. ave) ASTM D 4833 N 190 350
Axi-Symmetric Break Resistance Strain (min.) ASTM D 5617 % 30 30
Carbon Black Content ASTM D 4218 % 2-3 2-3
ASTM D 6370
Carbon Black Dispersion ASTM D 5596 Category min. 9 in Categories 1 and 2 and max. 1 in Category 3
Oxidative Induction Time (OIT) (min.ave.) Standard OIT ASTM D 3895 min 100 100
High Pressure OIT ASTM D 3895 400 400
Oven Aging at 85°C Standard OIT (min. ave.) % retained after 90 days ASTM D 5721 % 35 35
ASTM D 3895
UV Resistance High Pressure OIT (min. ave.) % retained after 1600 hours ASTM D 5885 % 35 35
Standard roll dimensions
Roll length m 100 100
Roll width m 5.1 5.1
Roll area m 510 510

BS EN 13361: Characteristics required for use in the construction of reservoirs and dams.

BS EN 13362: Characteristics required for use in the construction of canals.

BS EN 13491: Characteristics required for use in the construction of tunnels and underground structures.

BS EN 13492: Characteristics required for use in the construction of liquid waste disposal sites, transfer stations, or secondary containment.

BS EN 13493: Characteristics required for use in the construction of solid waste storage and disposal sites.

BS EN 15382: Characteristics required for use in the construction of transportation infrastructure.

Handling

Roll weights can be in excess of 200kg and hence appropriate care and equipment is required for unloading and handling.

Storage

Rolls of LLDPE should be stored on stable/level ground and stacked not more than five rolls high, with no other material stacked on top. The rolls can be stored outdoors when packaged, but should be protected from exposure to UV.

Installation

LLDPE should be installed in accordance with the product installation guidelines.

Jointing and sealing

LLDPE should be jointed and sealed in accordance with the product installation guidelines.

Additional information

For additional information or assistance, please contact Wrekin directly.