How to produce non-woven geotextile?

Non-woven geotextiles are mainly water-permeable geosynthetics made of synthetic fibers through needle punching or weaving. Nowadays, the uses are very wide. Next, let’s talk about how non-woven geotextiles are produced and their main uses. How to produce? Non-woven geotextiles can be used as soil reinforcement materials to reinforce soft foundations or build light retaining walls, and at the same time, it can also reduce the pore water pressure under the embankment. It is used as a filter layer for the drainage system of earth-rock dams, underground drainage pipes, soft foundation reinforcement, and slope protection and shoulder pads of various embankments. It has been widely used to solve the problems of roadbed subsidence and mud boiling. The development speed of non-woven geotextile is very fast, and it has become the main component of geotextile. The non-woven geotextile has a large elongation, can adapt to large deformation, can be made into pores of appropriate size according to needs, and has good permeability in both the horizontal and vertical directions. The raw materials used are mainly polyester, followed by polypropylene and vinylon, with a unit weight of 100-800 g/m2. The emergence of non-woven geotextiles is later than that of woven geotextiles. There are two main production methods: spunbond and needle-punched methods, and needle-punched methods account for a larger proportion in my country. Main uses 1. Drainage of artificially filled soil foundation sports ground foundation. 2. Eliminate the water seepage around the tunnel, reduce the external water pressure on the lining and the water seepage around the buildings. 3. Drainage behind the anti-seepage geomembrane in the earth dam or embankment or under the concrete cover. 4. Vertical or horizontal drainage inside the earth dam, buried in the soil to dissipate the pore water pressure. 5. Geotextile isolation layer between roads, airports, railway tracks and artificial rockfills and the foundation. 6. The filter layer of water wells, relief wells or inclined pressure pipes in water conservancy projects. 7. The filter layer around the drainage concealed pipe or the gravel drainage ditch. 8. The filter layer of the upstream dam surface of the ash storage dam or tailings dam, and the filter layer of the drainage system in the backfill of the retaining wall. 9. The isolation layer between artificial fill, rockfill or material field and foundation, and isolation between different frozen soil layers. Play the role of filtering and reinforcement. 10. The isolation layer between the road ballast and the roadbed, or the isolation layer between the roadbed and the soft foundation. 11. Increase the stability of gravel slopes and reinforced soil to prevent soil erosion and frost damage at low temperatures. 12. Reinforce flexible pavement, repair cracks on the road, and prevent reflection cracks on the pavement. 13. Used as reinforcement in the backfill of the retaining wall, or used to anchor the panel of the retaining wall. Build a wrapped retaining wall or abutment. 14. Geotextiles are placed on the bank slopes of rivers, rivers, lakes and seas, which can also prevent running water from washing up. Highways (including temporary roads), railways, embankments, earth-rock dams, airports, sports fields and other projects are used to strengthen weak foundations, and at the same time play the role of isolation and filtering. The above is the detailed content of how to produce non-woven geotextile. If you don’t understand, you can directly contact the relevant personnel of Fujian Non-woven Fabric Co., Ltd.