SUPERIOR NEEDLE PUNCHED NONWOVEN GEOTEXTILES

IMPTREX GEOTEX Geotextile made from staple fibres that are mechanically bonded by a needle punching process to produce a dimensionally stable network. The fibres used are 100% virgin white Polypropylene, ultra-violet resistant with 165°C melting point.

  • IMPTREX GEOTEX Geotextiles are used in road and railway soil stabilization, waterways and seashore erosion control, asphalt pavement overlay crack relief, subsurface drainage systems, waterproofing membrane protection, landfill, landscaping etc.
  • Separation between two dissimilar materials so that the integrity and functioning of both materials can remain intact or be improved.
  • Filtration by permitting water flow across the plane of the geotextile while retaining fine soil particles.
  • Transmission by providing water drainage and gas venting within the plane of the geotextile.
  • Sealing when impregnated with asphalt or resin to act as a moisture barrier.
  • Stress Absorption in pavement overlay when impregnated with asphalt.
  • Protection of geo-membrane against puncture by absorbing the point stresses.
  • Hydraulic Properties include opening size, permeability and transmissivity. For optimum filtration, the geotextile is required to meet two seemingly conflicting requirements: the geotextile pore spaces must be small enough to retain soil particles while also being large enough to permit relatively impeded water flow. IMPTREX Geotextiles meet this requirement and have exceptionally high filtration properties due to the needle punching process, which produces a large number of small holes in the fabric structure. This process provides IMPTREX with superior filtration properties, offering a unique combination of high permeability that allows unimpeded flow of water across the fabric whilst maintaining a low opening size to retain the finest soil particles without becoming clogged over time.
  • Survivability Properties refer to the ability of the geotextile to withstand the installation stresses and to perform as intended in the design. The survivability properties include puncture resistance, dynamic puncture, CBR puncture and Mullen burst strengths. IMPTREX Geotextile, due to their high elongation property, is inherently more resistant to installation damage than stiff low elongation fabrics. The high elongation property of IMPTREX Geotextile allows the fabric to adapt to the uneven contour of the matrix and absorb the installation stresses, unlike stiff geotextile fabrics with low elongation that tend to carry the installation loads and hence are required to meet a set of higher strength values compared to high elongation geotextiles. The geotextile fabric, in the tensile, grab and trapezoidal tear tests, is stressed in a linear direction along its plane, and hence these index test values need necessarily be considered in conjunction with elongation values.
  • IMPTREX GEOTEX Geotextiles are non-biodegradable, and have excellent resistance to chemicals and salts normally present in the soil.
    • EXPOSURE TO SUNLIGHT
    Test Method AASHTO Specification IMPTREX
    ASTM D 4355 >50% strength at 500 hours >60% strength at 500 hours
IMPTREX GEOTEX standard Polypropylene Geotextiles products indicated in this data sheet comes with a variety of grades between 100 g/m2 and 1000 g/m2. IMPTREX Geotextile rolls are delivered in PE wrap for protection against ultra-violet rays during transit and storage.
DURABILITY
Chemical Resistance 100%
Oxidation Resistance >90%
Microbiological Resistance 100%
Hydrolysis 100%
Product Description
Polymer 100% Polypropylene
Density >0.91 kg/dm³
Melting Point 165 °C
Fiber Bonding Mechanical
Property Standard Unit IG 100 IG 120 IG 140 IG 180 IG 200 IG 300 IG 400 IG 500 IG 600
Tensile Strength MD/CD EN ISO 10319 kN/m 6 8 9.4 12.5 14 22 30 37 42
Elongation MD/CD EN ISO 10319 % 40/55 40/55 40/55 45/55 45/55 50/55 50/55 60/65 60/65
CBR Puncture EN ISO 12236 N 1085 1400 1630 2100 2500 4000 5000 5200 7000
Dynamic Cone Drop EN ISO 13433 mm 30 28 24 20 18 12 9 5 4
Grab Strength MD/CD ASTM D 4632 N 400 500 590 760 960 1400 1800 2300 2600
Grab Elongation MD/CD ASTM D 4632 % 70/75 70/75 70/75 70/75 70/75 70/75 70/75 70/75 70/75
Puncture Strength ASTM D 4833 N 220 270 320 450 500 750 900 1000 1075
Mullen Burst ASTM D 3786 Psi 170 210 255 325 375 580 700 800 865
Trapezoidal Tear Strength ASTM D 4533 N 200 265 290 370 475 600 650 850 1020
Permeability EN ISO 11058 m/s.10ˉ³ 116 110 102 95 80 60 50 40 33
Water Flow in Plane 20 kpa EN ISO 12958 m²/s 1x10-7 1x10-7 1x10-7 1x10-7 2x10-7 3x10-6 1x10-5 6x10-6 7x10-6
Apparent Opening Size EN ISO 12956 µ 125 120 115 100 100 90 80 72 68
Permeability ASTM D 4491 l/m²s 135 130 120 100 85 75 50 40 33
Apparent Opening Size ASTM D 4751 µ 190 180 170 140 110 80 65 60 60
Thickness Under 2 kpa EN ISO 9863-1 mm 1 1.2 1.4 1.65 1.8 2.4 3 3.5 4
Thickness Under 2 kpa ASTM D 5199 mm 1 1.2 1.4 1.65 1.8 2.4 3 3.5 4
Natural UV ASTM D 4355 % 75 75 75 75 75 75 75 75 75
Roll Size sqm 2x200 m 2x200 m 2x200 m 2x100 m 2x100 m 2x100 m 2x50 m 2x50 m 2x50 m

SUPERIOR NEEDLE PUNCHED NONWOVEN GEOTEXTILES