Polyethylene(PE) takes the name of ethylene which is in the form of monomer. With several methods of polymerization, Ethylene becomes Polyethylene. Geoser HDPE Geomembrane is a geosynthetic liner which is formed as a result of extrusion of high density polyethylene and shaped homogenously by calender system. It can be used in all projects where impermeability is required. It is a kind of geomembrane made of high density polyethylene raw material and generally used in landfills; chemical repository sites. Although it is hard, it is not fractured. It is manufactured in a width of 2,10m to 7,00mt; standart lengths of 50m to 100m or optional lengths; in optional colours; with thicknesses of 1,00mm&1, 20mm&1, 50mm& 2,00mm&2, 50mm&3,00mm.