according to the design requirements
composite geo-membrane takes plastic film as seepage-proof base material, it's the soil engineering seepage-proof base material composed by non-woven fabrics, and it's seepage-proof performance mainly depends on the seepage-proof performance of plastic film. it's dominant mechanism is isolating the earth dam leakage passage with the imperviousness of plastic film, it's good strength of extension and elongation can endure hydraulic?pressure and adapt deformation of dam; non-woven fabrics is also a kind of macromolecule staple fibre chemical material, it's made by needle punching or hot sticking, and has high strength of extension and extensibility, after combined with plastic film, it not only has increased the strength of extension and anti-puncture ability of plastic film, the rough surface of non-woven fabrics has increased the friction coefficient of contact surface, which is benefit to the stability of composite geo-membrane and packaging layer. meanwhile, they have good corrosion resistance to bacteria and chemical function, and can be resistant to the errosion of acid, alkali, salt.
