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Geomembranes are widely used for containment of liquids, solids and waste materials by virtue of its characteristics; resistance to a wide range of chemicals, reliable in exposed environments due to high UV protection against degrading and low temperature brittleness. CeTeau offers a wide range of materials capable of meeting the ever increasing environmental demands.
HDPE (high-density polyethylene) is the most chemically resistant member of the polyethylene family on account of its dense configuration (>0.94 g/cm3). It is extensively used for containment structures. Although less flexible than its LLDPE counterpart, it still offers great elongation properties allowing up to 12% deformation at its yield point.
LLDPE (linear low-density polyethylene) as its name implies, is a lower-density polyethylene is a lower-density polymer (<0.939 g/cm3) yielding increased material flexibility. LLDPE is mainly used where long-term large settlements are anticipated such as landfill covers.
Landfill Liners and caps
Reservoirs, irrigation canals, industrial ponds and lagoons
Recreational lakes, ponds and golf courses
Agriculture, shrimp farming
Mine tailings & heap leach pads
Secondary containment of storage tanks
Geomembranes are heat welded in the field by certified technicians using the following welding systems;
Hot wedge weld:
a heated (metal) wedge is drawn between the liner, so that the material melts. By using pressure rolls the layers are converted to a homogeneous
Hot air weld:
instead of using a wedge, the liner is heated with hot air and pressed together.
a bead of melted HDPE is laid on the edge of the liner by using a hand extruder. This forms an excellent joint with the liner underneath.
The large width (7.5 m) of CeTeau geomembranes reduces the number of welds considerably. To guarantee the quality of the welds, all welds are tested in