Nonwoven Geotextile
Needle-punched nonwoven geotextile for filtration, drainage, separation and protection of geomembranes.
Overview
Needle-punched nonwoven geotextile is a thick, felt-like fabric of polypropylene staple fibres bonded mechanically. It filters fine soil from flowing water, carries water in its own plane and cushions geomembranes against stones and uneven subgrade. It is a common choice behind retaining walls, around drains, under riprap and above or below landfill and pond liners. Weights from 150 to 500 g/m² cover light separation duty through to heavy protection.
Features
- Filters soil while letting water pass freely
- High permeability and some flow within the fabric plane
- Cushions geomembranes against puncture damage
- High elongation, so it follows uneven ground
- Rot-proof and resistant to soil chemicals
- Available from 150 to 500 g/m²
Specifications
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| Property | Unit | Test method | NW150 | NW200 | NW300 | NW400 | NW500 |
|---|---|---|---|---|---|---|---|
| Mass per unit area | g/m² | ISO 9864 | 150 | 200 | 300 | 400 | 500 |
| Tensile strength, MD / XMD | kN/m | ISO 10319 | 6.5 / 6.0 | 9.0 / 8.5 | 13.5 / 13.0 | 18.0 / 17.0 | 23.0 / 22.0 |
| CBR puncture strength | N | ISO 12236 | 1100 | 1500 | 2300 | 3200 | 4000 |
| Apparent opening size, O90 | mm | ISO 12956 | 0.13 | 0.11 | 0.09 | 0.08 | 0.07 |
| Water permeability, normal to plane | mm/s | ISO 11058 | 110 | 95 | 70 | 55 | 40 |
| Roll size (W x L) | m | – | 4 x 100 | 4 x 75 | 4 x 50 | 4 x 40 | 4 x 30 |
Typical values. Contact us to confirm the specification for your project.
Applications
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