3D Geonet Drainage Composite Sheet Rolls

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3D Geonet Drainage Composite Sheet Rolls

PTT CHINA is the leading and professional manufacturer of Geocomposite Mat Rolls in China.

3D Geonet Drainage Composite Sheet just was one member of  geocomposite Drainage Mat Product,

which are mainly made of drainage core and filter Needle Punch Nonwoven Geo-textile.

We mainly have 3 types of drainage core to offer:

  1. Cuspate and dimpled drainage core;
  2. 3D Geonet Drainage Core;
  3. 3D Geomat Drainage core;

The geocomposite drainage mat rolls have the property of geotextile(filtration function ) and Drainage core (drainage and protection ) to provide a multi-function

System”filtration-drainage-protection”. The core of drain core with its unique tri-dimension structure can bear higher compressing

load in construction and remain the certain thickness to provide good water conductivity.

3D Geonet Drainage Composite Sheet was made of :

  1. Polyester Filament Needle Punch Nonwoven Geotextile, which has higher tensile strength and permeability.
  2. HDPE 3D geonet drainage core.

It’s welcome to contact us if you need special drainage core pattern.

Typical Applications

Landfill drainage;

roadbed and road drainage;

railway drainage;

tunnel drainage,


structure drainage,

the retaining back wall drainage;

gardens and sports ground drainage


1)Excellent drainage function, can bear long time hige press load

2)High tensile and shear strength

3)Reduce the rate geotextile embedding into the core of geonet, can protect long time stable water conductivity

4)Tri-dimension composite geonet for drainage can bear more than kpa compression load

5)Its anti-compression capacity is much larger than common geonet for drainage

Specifications and technical parameters

No. Project Units Standard value
1200g 1400g 1600g 1800g 2000g
1 Composite mass per unit area g/m2 ≥1200 ≥1400 ≥1600 ≥1800 ≥2000
2 Composite thickness mm ≥6.0 ≥7.0 ≥8.0 ≥9.0 ≥10.0
3 Composite longitudinal tensile strength KN/m ≥16.0 ≥16.0 ≥16.0 ≥16.0 ≥16.0
4 Composite hydraulic conductivity m2/s ≥1.2×10-4 ≥1.2×10-4 ≥1.2×10-4 ≥1.2×10-4 ≥1.2×10-4
5 Drainage core and non-woven peel strength KN/m ≥0.3 ≥0.3 ≥0.3 ≥0.3 ≥0.3
6 Geonet thickness(Drain Core) mm ≥5.0 ≥5.0 ≥6.0 ≥7.0 ≥8.0
7 The tensile strength of the geonet (Drain Core) KN/m ≥13.0 ≥15.0 ≥15.0 ≥15.0 ≥15.0
8 Non-woven mass per unit area g/m2 ≥200 ≥200 ≥200 ≥200 ≥200
9 Non-woven normal permeability cm/s ≥0.3 ≥0.3 ≥0.3 ≥0.3 ≥0.3
10 Width m 1-4 1-4 1-4 1-4 1-4
11 Roll length m 30 30 30 30 30
Application Tri-Dimension Composite Geonet For Drainage Natural Gravel
Conduction and discharging water and gas Pass through strict quality control production line and have stable performance and good property of conducting water. The traditional gravel have complex composition and its drainage property is much lower than laboratory data for its contains of sand and dust.
Load / Protection Light weight, no more extral load on geomembrane and waste. Anti-pull, anti-compress, anti-impact and can prevent geomembrane from demage. Pressure on the waste, the keen stone can puncture and damage geomembrane. Often need other safeguard, such as thicker geotextile.
Function Four functions: Drainage, Separation, Filtration and Protection. Only drainage function, easy be blocked, and need accessorial filtration system.
Construction and installation Fast installation, easy for construction, without heay machinery and professionals. Construction speed is 5-10 times of gravel. Slow installyion, bulky and heavy, need heavy machinery, high cost and have more dissiculties with slope degree is more than 1V:4H.
Environment Raw material is polyethylene, nontoxic, no pollution, 100% recycable products. Relatively speaking, the gravel is scarce and precious resoueces. The ecological environment will be destroied when perple mine gravel.
Durability Good anti-erosion, antioxidation, anti-atmospheric media and rain water. It has long-term and the best drainage property if use them with the geotextile. Be easily blocked, has poor durability.
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