Geomembrane CARBOFOL® the HDPE liner

Carbofol® HDPE geomembranes are manufactured using high quality polyethylene resins. Carbofol® is manufactured in various thicknesses and up to 7.50m width. For sealing applications on slopes, Carbofol® is produced with an embossed structure.

Carbofol® geomembrane sealing applications

  • Landfill caps and base seals
  • Canals, ponds and reservoirs
  • Tunnels and buildings
  • Mining
  • Storage, filling, handling, manufacturing, treatment and use of contaminated liquids

Advantages of Carbofol® HDPE geomembranes

  • Excellent chemical resistance due to selected raw materials
  • High interface friction angles with embossed structured surface
  • Installation advantages with up to 7.50m wide liner
  • High Melt Flow Index (MFI) allows an excellent welding performance
  • Available according to GM-13 and with BAM and DIBt approval

Selected advantages of Carbofol® geomembranes

Advantage 1: Carbofol® long-term durability

Durability and high chemical resistance are ensured by carefully selected resins and a special stabilising system, which is aligned with the resin type. An enormous amount of field and lab data supports this performance.

Advantage 2: Special embossed surface structure allows a safe construction on steep slopes

New optimised BF/TF (bottom friction/top friction) embossed surface structure has been developed to increase shear strength towards typical shearing partners.

Advantage 3: Carbofol® HDPE liner comes with weld protection stripes and lateral marking

The Carbofol® geomembranes are provided with a white edge mark on both sides. These edge marks indicate the recommended areas of overlapping and are a visual aid during the installation. Furthermore, a thin protective sheet (~150mm wide) is attached to both edges and is peeled off immediately prior to the welding process to provide an absolutely clean welding area.

Advantage 4: HDPE Geomembrane with high Melt Flow Rate (MFR)

Carbofol® HDPE geomembranes feature a Melt Flow Rate (MFR) between 1 and 3g/10 minutes tested at 190°C/5kg and thus have the advantage of a large welding window. This makes Carbofol® geomembranes flexible and easy to handle during on-site installation. The speed at which welding processes can be carried out on Carbofol® geomembranes is distinctly higher than that of other liners with an MFR less than 1g/10min. This gives Carbofol® yet another major benefit during on-site installation and welding.

Chemical resistance from Carbofol® HDPE (High-density polyethylene) geomembranes based on German DIBt regulations

Chemical resistance from Carbofol® HDPE (High-density polyethylene) geomembranes based on German DIBt regulations.

40 years experience in developing, manufacturing, installing and designing with high-grade HDPE geomembranes

Carbofol® geomembranes provide a seal against the most toxic substances. Carbofol® is typically used in sealing applications for landfill base seals as well as caps, in environmental sealing applications for the protection of ground-water from contamination and in water conveyance structures, canals, tunnels or ponds.

High durability HDPE Liner

Functional waterproofing is an important criterion for a geomembrane. Aging and inadmissible stresses endanger this function. Carbofol® HDPE geomembranes have a high durability, because they are manufactured from well-chosen resins with a very low stress crack resistance. These resins consist on hexene or octene copolymer. Testing with the Notched Constant Tensile Load Test according to DIN EN 14576 or ASTM D5397 verifies the high stress crack resistance of Carbofol® geomembranes. Long term tensile tests, especially on structured material, prove the durability as well.

Carbofol® geomembranes with surface structure for perfect slope protection

The surface structure of Carbofol® is responsible for the stability on slopes. The special manufacturing process with embossed and chrome-plated rollers make sure that the embossed profile of the geomembrane creates a homogeneous connection from the same resin between the liner and the structure. This is the basis for a safe and durable construction of a slope.

This geomembrane is optimised for installation

Decades of installation experience have also influenced product characteristics, which ensure efficient and precise installation: protection strips on the welding areas, lateral marking, meter scaling, and a high melt flow rate (MFR: 1-3g/10 minutes tested at 190°C/5kg).

Carbofol® HDPE liner documents download


Advantages of Carbofol®

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