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Oct 27, 2017

Geomembrane to plastic film as anti-seepage substrate, and non-woven composite made of soil impermeable material, its impermeability depends mainly on the plastic film impermeability. (PVC) and polyethylene (PE), EVA (ethylene / vinyl acetate copolymer), tunnel applications are also designed to use ECB (ethylene vinyl acetate modified asphalt), the use of plastic film, Mixed geomembrane), they are a kind of polymer chemical flexible material, the proportion is small, the extensibility is strong, adapts to the deformation ability, the corrosion resistance, the low temperature resistance, the frost resistance is good. The main mechanism is to plastic film impermeable barrier earth dam leakage channel, with its large tensile strength and elongation to withstand water pressure and adapt to the dam deformation; and non-woven is also a polymer short fiber chemistry Material, through the needle or hot tack forming, with high tensile strength and extensibility.