Polyester Filament Geotextile

Product Name: Polyester Filament Geotextile

Product Overview

Polyester Filament Geotextile is a high-strength, permeable geosynthetic material manufactured from continuous filament polyester yarns. These filaments are spun into a uniform network and then mechanically bonded through needle-punching, resulting in an exceptionally durable and versatile non-woven fabric. It is engineered to provide superior performance in separation, filtration, reinforcement, and protection functions for a wide range of civil and environmental engineering applications.

Key Features & Advantages

1. High Tensile Strength: Exhibits excellent tensile strength in both machine and cross-machine directions, providing reliable reinforcement for soil stabilization and slope protection.
2. Outstanding Elongation & Tear Resistance: Its flexible, fibrous structure allows it to withstand high stress and deformation without brittle failure, accommodating ground settlement and differential movement.
3. Superior Permeability & Filtration: The uniform, porous structure ensures unimpeded water flow across the fabric plane (in-plane) and through its thickness (cross-plane), effectively preventing soil particle wash-out while allowing for proper drainage.
4. Excellent Puncture and Abrasion Resistance: The dense, needle-punched fabric offers robust protection for geomembranes and other sensitive liners from sharp objects and subsurface pressures.
5. Durable UV and Chemical Resistance: Made from high-quality polyester, it demonstrates strong resistance to ultraviolet degradation, mildew, and a wide range of chemical substances found in soils and water.
6. Long-Term Performance: Polyester is known for its low creep characteristics, ensuring the material maintains its structural integrity and design strength over the long service life of the project.

Technical Specifications (Typical)

PropertyTest MethodUnitValue Range

Mass per Unit Area

ASTM D-5261

g/m²

100 - 800

Tensile Strength (MD/CD)

ASTM D-4632

kN/m

7 - 80

Elongation at Break

ASTM D-4632

%

30 - 80

CBR Puncture Resistance

ASTM D-6241

N

800 - 8500

Trapezoid Tear Strength (MD/CD)

ASTM D-4533

N

400 - 6500

Permittivity

ASTM D-4491

s⁻¹

0.5 - 3.0

UV Resistance (after 500 hrs)

ASTM D-4355

% Strength Retained

> 70%

Note: Specifications can be customized based on project requirements.

Primary Applications

1. Reinforcement: Stabilizing soft subgrades, reinforcing steep slopes, embankments, and retaining walls.
2. Separation: Preventing the intermixing of two dissimilar soil layers (e.g., aggregate base and soft subsoil), thus maintaining the integrity and drainage capacity of the structural layer.
3. Filtration: Acting as a filter medium in drainage systems, trenches, and behind retaining walls to allow water passage while retaining soil particles.
4. Protection: Serving as a cushioning and protective layer for geomembranes in landfill liners and reservoir projects.
5. Erosion Control: Used beneath riprap and revetments to prevent soil erosion in channels, riverbanks, and coastal areas.
6. Pavement Systems: Retarding reflective cracks in asphalt road overlays.