Description

Permeable textile of synthetic fibers made from polypropylene cut (staple) fibers, formed in to uniform web and then needlepunched for entanglement to achieve high strength. For certain applications, the non-woven geotextile may then be heat treated by forced air thermal bonding and/or by calendaring, which is pressing with a hot roll and pressure.

Adventages

Nonwoven grotextile have highest coefficient of friction against sold or stone have the ability to locally elongate to relieve stress concentrations to avoid construction damege and the nonwovens conform well to irregular ground surfaces. Nonwoven have higher permittivity and water flow, yet have tighter pore size to be a finer filter.