Geomembrane is a waterproof barrier material based on polymer. Mainly divided into: low-density polyethylene (LDPE) geomembrane, high-density polyethylene (HDPE) geomembrane and EVA geomembrane. The standard name is polyethylene geomembrane, which is mainly made of milky white translucent to opaque thermoplastic resin material polyethylene resin. Polyethylene is a high molecular polymer, which is non-toxic, tasteless and odorless white particles with a melting point of about 110℃-130℃ and a relative density of 0.918-0.965; the geomembrane has good heat resistance and cold resistance and is chemically stable It has good elasticity, good rigidity and toughness, good mechanical strength, and environmental resistance should be good cracking and tear resistance. As the density increases, the mechanical properties and barrier properties will increase accordingly, and the heat resistance and tensile strength will also increase. Higher; resistant to acid, alkali, organic solvents and other corrosion.

Due to its good tensile strength, high impact strength, anti-penetration, acid and alkali resistance, heat resistance, weather resistance, wear resistance and other properties, anti-seepage geomembrane has been widely used in the construction industry in coastal areas. At the same time, it is also widely used in river dams, reservoirs, diversion tunnels, highways, railways, airports, underground, underwater and other projects.