Nonwoven Environmental Grade
Nonwoven needle-punched geotextiles Environmental Grade are used in critical subsurface drainage applications or where a specific mass is required to meet protection criteria for geomembrane.
Needle-punched nonwoven geotextiles are made from polypropylene fibres that are tangled together in a needle-punching process. The fibres may be made in continuous or short lengths and achieve their strength by interlocking. Needle-punched nonwoven geotextiles have excellent water flow rates and are used for filtration of soil fines. Needle-punched nonwoven geotextiles have been used in drainage applications, including trench drains (aka frenchdrains). It can also be used for wrapping a perforated pipe, erosion protection, landfill leachate collection systems and combined with three-dimensional structures to create gas collection and venting systems. They are also commonly used with geomembranes to provide a protective cushion. Needle-punched nonwoven primary functions: filtration; separation; protection; drainage.
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