Geotextile membrane, a geomembrane material made by laminating a plastic film with non-woven fabric, its waterproof performance mainly depends on the waterproof property of the plastic film.

Geosynthetic membranes are made of plastic films as the basic impermeable material, compounded with non-woven fabrics. The impermeability of the new material geosynthetic membrane mainly depends on the impermeability of the plastic film. The plastic films commonly used in impermeable applications worldwide include polyvinyl chloride (PVC), polyethylene (PE), and EVA (ethylene/vinyl acetate copolymer). In tunnel applications, ECB (ethylene acetic acid vinyl modified asphalt blended geosynthetic membrane) is also designed for use. These are high molecular weight flexible materials with low density, high extensibility, high adaptability to deformation, corrosion resistance, low-temperature resistance, and good frost resistance.