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A. Characteristics of Polyester Continuous filament needle-Punched Geotextile: Characteristics of Polyester Continuous filament Non-woven needle-Punched Geotextile is a kind of geosynthetics used in geotechnical engineering and civil engineering, which is made of PET continuous filament, by paving the filament net and concretion method, thus produced the fabric. Its fiber is arrayed a three dimensional structure. Besides its fine mechanical characteristics , it has chemical stability like fine drainage capacity in both directions, good capacity of elongation and high biology tolerance, alkali tolerance, acidity tolerance, weather resistance etc. Meanwhile, it has wider pore size, devious hole distributing, good permeability and filtration.
B. Applications of Polyester Continuous filament needle-Punched Geotextile *Filtration in water conservancy project and slope protection project; *Separation and anti-seepage in channel engineering; *Separation, filtration and drainage function in projects of road, railway and airfield runway; *Reinforcement and drainage in projects of earth slope and retaining wall.
C. Technical parameters (GB/T 17639-1998) of Polyester Continuous Filament Needle-Punched Non-Woven Geotextile
1.Mass per square meter: 100gsm to 800gsm; 2.Thickness: 0.8mm to 5.5mm; 3.Tensile Strength: 4.5KN/M to 40.0KN/M; 4.Tensile Elongation: 40% to 80%; 5.CBR Puncture Strength: 0.8KN to 7.0KN; 6.Equivalent Opening Size O90: 0.07mm to 0.20mm; 7.Vertical Permeability: K * (10-1~10-3)cm/s K=1.0~9.9; 8.Tearing Strength: 0.14KN to 1.10KN.
