Non Woven Polypropylene Geotextile Fabric
Excellent Chemical Stability: Polypropylene itself has strong acid and alkali corrosion resistance, which can maintain stable performance in extreme environments with pH value of 2-13. It can resist erosion by various corrosive substances such as nitric acid, hydrochloric acid, and sodium hydroxide. At the same time, it does not absorb water and will not experience problems such as decreased tensile strength in humid environments, making it especially suitable for alkaline engineering interfaces such as cement and lime.
Superior Mechanical Properties: Products made by continuous filament needle punching consolidation process have high longitudinal and transverse tensile strength, moderate elongation, and outstanding puncture and tear resistance. Compared with staple fiber geotextiles, its mechanical properties are more superior. The tensile fracture of the fabric surface is mainly fiber fracture rather than fiber extraction, with stronger stability.
Efficient Drainage and Filtration Performance: Its unique three-dimensional porous structure gives it high water permeability, allowing water to pass freely while effectively retaining soil particles and avoiding clogging of the drainage system. Its equivalent pore size can be accurately controlled between 0.05-0.2mm, with precise and reliable filtration effect, ensuring the long-term efficient operation of the drainage system.
Good Environmental Adaptability: After adding UV inhibitors such as carbon black, it can withstand long-term sunlight exposure, with no obvious performance attenuation within 14 days of exposure; it also has anti-biological corrosion properties, does not breed fungi, rot or mildew. It can also resist freeze-thaw damage in low-temperature environments, with a wide applicable temperature range, and can withstand high temperatures up to 160℃ without melting.
Lightweight and Easy to Construct: The density of polypropylene is only 0.91g/cm³, much lower than that of polyester and other materials. Under the same strength, it has a larger coverage area and lower transportation and laying costs. The fabric surface is soft and fit, can be flexibly cut according to engineering terrain, and multi-roll splicing is convenient, greatly improving construction efficiency.
Product Introduction
- Non Woven Polypropylene Geotextile Fabric is a three-dimensional porous structural material continuously produced from 100% polypropylene resin as the core raw material through multiple processes such as melt spinning, drawing, web laying, needle punching consolidation, and tentering setting. Its appearance is felt-like, with random and uniform fiber arrangement, forming a unique air-permeable and water-permeable structure. Different from the interlaced texture of traditional woven geotextiles, it has stronger adaptability and practical value.
- The product makes fibers intertangled through mechanical bonding processes such as needle punching, without the need for additional adhesives, ensuring the purity and stability of the material. According to different engineering requirements, its basis weight can be divided into multiple specifications, ranging from light 3oz/yd² to heavy 16oz/yd², with corresponding mechanical properties and application scenarios. It is worth noting that domestic enterprises have successfully overcome the industrialization technical difficulties of high-strength and thick-denier polypropylene spunbond needle-punched geotextiles, breaking international monopoly. The product performance far exceeds national standard requirements, realizing the leap from relying on imports to independent supply.
- Firstly, significant cost advantage. The raw material polypropylene has abundant reserves and low market price, and the production process of non-woven technology is simple and efficient, which effectively controls the production cost. Compared with polyester geotextiles of the same specification, the cost can be reduced by 15%-25%, while the service life can reach 5-10 years, realizing the balance of high performance and low cost.
- Secondly, strong versatility. It integrates multiple functions such as filtration, drainage, reinforcement, isolation and protection, and can meet the needs of different links in engineering construction. For example, it can be used as a filter layer in drainage projects and a reinforcement layer in roadbed projects, avoiding the trouble of purchasing multiple materials, simplifying the construction process and reducing project management costs.
- Thirdly, environmental protection and sustainability. Polypropylene material is recyclable, and the waste geotextile can be recycled and reused after processing, which reduces environmental pollution. At the same time, no harmful substances are added in the production process, which conforms to the global green construction development trend and helps projects obtain relevant environmental certification.
- Fourthly, stable supply capacity. With the maturity of domestic production technology, the supply of Non Woven Polypropylene Geotextile Fabric is sufficient and the delivery cycle is short, which can avoid the supply delay risk caused by import. In addition, manufacturers can customize specifications according to the specific needs of engineering projects, providing more targeted solutions.
Product Parameters
project | metric | ||||||||||
Nominal strength/(kN/m) | |||||||||||
6 | 9 | 12 | 18 | 24 | 30 | 36 | 48 | 54 | |||
1 | Longitudinal and transverse tensile strength / (kN/m) ≥ | 6 | 9 | 12 | 18 | 24 | 30 | 36 | 48 | 54 | |
2 | Maximum elongation at maximum load in longitudinal and transverse directions/% | 30~80 | |||||||||
3 | CBR top penetration strength /kN ≥ | 0.9 | 1.6 | 1.9 | 2.9 | 3.9 | 5.3 | 6.4 | 7.9 | 8.5 | |
4 | Longitudinal and transverse tearing strength /kN | 0.15 | 0.22 | 0.29 | 0.43 | 0.57 | 0.71 | 0.83 | 1.1 | 1.25 | |
5 | Equivalent aperture O.90(O95)/mm | 0.05~0.30 | |||||||||
6 | Vertical permeability coefficient/(cm/s) | K× (10-¹~10-), where K=1.0~9.9 | |||||||||
7 | Width deviation rate /% ≥ | -0.5 | |||||||||
8 | Unit area mass deviation rate /% ≥ | -5 | |||||||||
9 | Thickness deviation rate /% ≥ | -10 | |||||||||
10 | Thickness coefficient of variation (CV)/% ≤ | 10 | |||||||||
11 | Dynamic perforation | Puncture hole diameter/mm ≤ | 37 | 33 | 27 | 20 | 17 | 14 | 11 | 9 | 7 |
12 | Longitudinal and transverse fracture strength (grab method)/kN ≥ | 0.3 | 0.5 | 0.7 | 1.1 | 1.4 | 1.9 | 2.4 | 3 | 3.5 | |
13 | Ultraviolet resistance (Xenon arc lamp method) | Longitudinal and transverse strength retention rate% ≥ | 70 | ||||||||
14 | Ultraviolet resistance (fluorescence UV lamp method) | Longitudinal and transverse strength retention rate% ≥ | 80 | ||||||||
Product Application
Highway and Railway Construction: It is used as a separation layer between subgrade and pavement, which can isolate soil and aggregate, prevent mutual penetration and mixing, and avoid subgrade settlement and pavement cracking. At the same time, it plays a role in drainage and reinforcement, improving the bearing capacity of the subgrade. It is also applicable to the soft soil foundation treatment of highways and railways, effectively reducing the settlement of the foundation and ensuring the driving safety.
Water Conservancy Engineering: In rivers, lakes, reservoirs and other water conservancy projects, it is used as a anti-seepage and filtration layer. It can prevent soil erosion, protect the bank slope, and at the same time ensure the smooth drainage of water, avoiding the damage of water pressure to the project. It is also widely used in irrigation channels, drainage ditches and other projects to improve the anti-corrosion and anti-erosion performance of the channel.
Environmental Protection Engineering: In landfill projects, it is used as a anti-seepage and filtration material to prevent harmful substances in garbage from seeping into the soil and groundwater, protecting the ecological environment. It is also used in sewage treatment projects, as a filter material in the process of water treatment, improving the water treatment effect. In addition, it can be used in ecological restoration projects such as slope greening, helping to fix soil and promote vegetation growth.
Building Engineering: In the construction of basement, foundation pit and other projects, it is used as a waterproof and drainage layer, which can guide the underground water to discharge smoothly, avoid water accumulation in the foundation pit and affect the construction progress. It is also used in the roof waterproofing project, as a protective layer of the waterproof membrane, extending the service life of the waterproof membrane.
Mining Engineering: In coal mines, metal mines and other mining projects, it is used as a support and protection material for roadways. It can reinforce the surrounding rock of the roadway, prevent rockfall and collapse, and at the same time play a role in dust prevention and drainage, improving the safety of mining operations.
Nonwoven polypropylene geotextiles, with their core functions of filtration, drainage, isolation, and protection, along with their economical, easy-to-apply, and adaptable nature, have become a lightweight engineering material for diverse sectors, including municipal administration, water conservancy, road construction, and environmental protection. They address specific pain points in diverse scenarios, such as weed control in gardens, roadbed reinforcement, and sewage leakage prevention. They also address ecological needs (such as water retention and air permeability, reducing pollution) and cost controls (such as lowering maintenance costs and adapting to small and medium-sized projects). Their high cost-effectiveness makes them a preferred material for balancing practicality and affordability, particularly in small and medium-sized projects and for public welfare applications. They provide fundamental support for the stable operation of various projects and ecological protection.
