Nonwoven Needlepunch Geotextile
Needlepunched nonwoven geotextile for filtration, drainage and separation applications.
- N Series from 4 oz/yd² to 16 oz/yd² (N40 – N16)
- Grab tensile 100 – 420 lbs, CBR puncture 300 – 1100 lbs
- Water flow up to 160 gal/min/ft² for drainage and filtration
- High elongation conforms to uneven subgrades
Product Introduction
Nonwoven Needlepunch Geotextile – N Series
Needlepunched nonwoven geotextile produced from polypropylene fibres that are mechanically interlocked by barbed needles. The resulting fabric combines high permeability with good elongation, allowing it to conform to uneven ground while maintaining its filtration performance.
The N Series runs from N40 (4 oz/yd²) up to N16 (16 oz/yd²), so the same product family covers everything from light separation duty to heavy cushioning under geomembrane liners. All grades retain 70 % of strength after 500 hrs of UV exposure.
Strengths
- High water permeability across the fabric plane
- High elongation conforms to irregular subgrades
- Resistant to UV, chemical substances and micro-organisms
Function
- Separation
- Filtration
- Drainage
- Protection
Applications
- Separation layer between subgrade and aggregate
- Filtration in subsurface and French drain systems
- Cushion and protection layer for geomembrane liners
- Erosion control beneath riprap and revetments
Specifications
| Material | Needlepunched polypropylene staple fibre |
|---|---|
| Fabric Codes | N40 / N60 / N70 / N80 / N10 / N12 / N14 / N16 |
| Weight (ASTM D 5261) | 4 – 16 oz/yd² |
| Grab Tensile (ASTM D 4632) | 100 – 420 lbs |
| Grab Elongation (ASTM D 4632) | 50 % |
| Trapezoid Tear (ASTM D 4533) | 50 – 150 lbs |
| CBR Puncture (ASTM D 6241) | 300 – 1100 lbs |
| Permittivity (ASTM D 4491) | 2.0 – 0.57 sec⁻¹ |
| Water Flow (ASTM D 4491) | 160 – 45 gal/min/ft² |
| AOS (ASTM D 4751) | 70 – 100 US Sieve |
| UV Resistance (ASTM D 4355) | 70 % at 500 hrs |
