Filament Needlepunched Nonwoven Geotextile

I. Definition and Material Characteristics

Full name: Polyester Filament Needle-Punched Non-Woven Geotextile. It is produced by means of high-temperature melting, spinning, web-forming, and needle-punching consolidation of polyester chips, containing no chemical components and belonging to environment-friendly constructing materials. Its fibers are organized in a third-dimensional structure, with traits such as anti-aging, acid and alkali resistance, and put on resistance, with a provider existence of over 50 years. When laid in a buried manner, it can even stand up to excessive temperatures from -30°C to 200°C.

II. Core Performance Features 1. Outstanding Mechanical Properties- High tensile, tear, and puncture resistance strengths. Under the equal grammage, the mechanical electricity is extra than 1 time that of short-fiber geotextiles, with a puncture resistance energy of over 2200 Newtons.- Tensile power at destroy levels from 4.5 KN/m (100g/m²) to 40 KN/m (800g/m²), and the CBR puncture power can attain up to 7.0 KN.

2.  Permeability and Drainage Performance- Good longitudinal and transverse drainage performance, with a vertical permeability coefficient of (1.0-9.9)×10⁻¹~10⁻³ cm/s, effectively疏导 (can be translated as “diverting” or “channeling”) inner water and gasoline in soil.3. Environmental Adaptability- UV-resistant and corrosion-resistant, with sturdy anti-aging overall performance after burial, however susceptible to degradation underneath direct daylight (2-3 years).4. Construction Convenience- High friction coefficient, now not convenient to slip all through construction; correct flexibility, adaptable to irregular base surfaces.

III. Functions and Roles 1. Isolation: Prevents mixing of special substances (such as soil and sand), preserving structural stability.2. Filtration and Drainage: Retains fantastic particles whilst permitting water flow, used in filter layers or drainage channels.3. Reinforcement: Enhances soil tensile strength, utilized in keeping walls, slope reinforcement, etc.4. Protection: Distributes stress to stop soil from exterior damage.5. Anti-Seepage Assistance: Forms an anti-seepage layer with geomembranes, used in landfills, reservoirs, etc.

IV. Main Application Fields – Water Conservancy Projects: Dam filter layers, slope protection, drainage pipe filter layers, etc.- Transportation Engineering: Subgrade isolation for highways/railways, pavement crack repair, airport runway reinforcement.- Environmental Protection Projects: Anti-seepage for landfills, isolation for sewage therapy ponds.- Port and Coastal Engineering: Soft basis treatment, breakwater reinforcement.- Municipal Engineering: Tunnel drainage, sports activities subject basis reinforcement. 

V. Production Standards and Storage Requirements – National Standard: The cutting-edge is GB/T 17639-2008 (replacing the authentic GB/T 17639-1998), overlaying technical warning signs such as unit location mass deviation and tensile power at break.- Storage Requirements: Fireproof, waterproof, and pressure-proof, managed through the “first-in-first-out” principle, averting direct UV exposure.

VI. Major Manufacturers Domestic important manufacturing businesses are targeted in Shandong, with consultant producers including: 1. Shandong Jiantong Engineering Technology Co., Ltd.：A complete geosynthetic fabric enterprise, whose merchandise are utilized in fundamental tasks such as the South-to-North Water Diversion Project.2. Dezhou Dongfang Environmental Protection Technology Co., Ltd.：With an annual output of 5,000 tons, specializing in the manufacturing of wide-width polyester filament geotextiles.3. Shandong Zisen Engineering Materials Co., Ltd.：A main producer of geogrids and composite materials.4. Shandong Zhuyuan Geotextile Materials Co., Ltd.：Adopting global superior technology, with high-strength and anti-aging products. VII. Economy and Environmental Protection Polyester filament geotextiles can change usual sand and gravel materials, lowering development prices by using about 30%, whilst decreasing useful resource consumption and environmental pollution, in line with the inexperienced constructing trend. For greater distinctive technical parameters (such as thickness and permeability coefficient for one of a kind grammages) or unique engineering cases, please refer to applicable company web sites or country wide fashionable documents.

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