Nonwoven Geotextile Characteristics

How To Choose Non Woven Geo textile?

Geo textile is a water-permeable geosynthetic material made of synthetic fibers through needle punching or weaving. It is divided into woven geotextile and non-woven geotextile. The finished product is cloth-like, with a width of 4-6 meters and a length of 50-100 meters.

Nonwoven geotextile is a production process of repeated needle punching, presenting the characteristics of a three-dimensional pore structure, also called equivalent pore size. It has the functions of filtration, drainage, isolation, reinforcement, seepage prevention, and protection. It has light weight, high tensile strength, and permeability. Good performance, high temperature resistance, freezing resistance, aging resistance, corrosion resistance and other properties.

Non-woven geotextile is made of filaments or short fibers that are laid out into a net through different equipment and processes. After needle punching and other processes, different fibers are intertwined, entangled and fixed to each other, so that the fabric is standardized and the fabric Soft, plump, thick and stiff, to achieve different thicknesses to meet the requirements of use. The equivalent pore diameter of short wire cloth is generally in the range of 0.07 to 0.2 mm, while that of filament cloth is in the range of 0.05 to 0.2 mm.

The non-woven geotextile has good fabric gaps and good adhesion. Because the fiber is soft, has a certain degree of tear resistance, good deformation adaptability and flat drainage ability, its surface is soft, multiple gaps and a good coefficient of friction. These characteristics can increase the adhesion of soil particles and prevent smallness. The passage of particles prevents the loss of particles and eliminates excess water.

According to the length of the filaments, it is divided into filament spunbond needle-punched nonwoven geotextile or short-filament needle-punched non-woven geotextile. They can play a very good role in filtering, isolation, reinforcement, protection, etc., is a widely used geosynthetic material.

The tensile strength of filament is higher than that of short filament, so it can be selected and used according to specific requirements. Mainly high-quality polyester staple fiber (fiber 4-9dtex, length 50-76mm), can also produce polypropylene, nylon, vinylon or mixed fiber needle-punched non-woven geotextiles according to actual needs, with isolation, filtration, drainage, The role of reinforcement, protection, and sealing, so it can be widely used in highways, sports venues, dams, hydraulic construction, tunnels, along the beach, reclamation, environmental protection and other projects.

The staple fiber needle-punched geotextile is a kind of non-woven and industrial cloth. It uses polyester crimped staple fiber with a fiber denier of 6-12 denier and a length of 54-64mm as raw materials. Through the process of opening, carding, messy (short fibers intertwined), laying (standardized entanglement and fixation), needle punching and other production processes of non-woven production equipment, it is made into cloth. It is mainly used in roadbed reinforcement, road surface maintenance, sports hall, dam protection, hydraulic construction isolation, tunnels, beaches, reclamation, environmental protection and other projects.

Polyester filament geotextile is directly made by spinning and needle-punching with polyester method. Product specifications can be selected from 80-800g/m2. It is a geosynthetic material used in geotechnical engineering and civil engineering. It is made by the method of forming and consolidating polyester filaments, and its fibers are arranged in a three-dimensional structure. In addition to good mechanical properties, it also has good vertical and horizontal drainage performance and good extension performance, as well as high chemical stability such as biological resistance, acid and alkali resistance, and aging resistance. At the same time, it also has a wide pore size range, tortuous pore distribution, excellent permeability and filtration performance. Polyester filament geotextile is mainly used in the filtration of dams and slope protection of water conservancy projects, the isolation and anti-seepage of channels, the foundation isolation, filtration, drainage, soil slopes, retaining walls and pavement reinforcement and drainage of highways and airport runways. , Soft foundation treatment of port engineering, reinforcement and drainage of beach dikes, harbour piers and breakwaters. Polyester filament geotextile has been widely used in the field of infrastructure construction, and is gradually being used in a wider range of fields.