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1.Introduction
Geotextile,also known as geotextile fabric, is a permeable geosynthetic material that exists between soil and pipes,gabions,or retaining walls,enhancing water movement and hindering soil movement.
Continuous filament non woven geotextile is made from super strength polyester chips as raw materials, and is produced through spinning,air stretch,web laying,pre-pressing and needling punched.
2.Polyester Filament Geotextile Manufacturing Process
The series of needle punched non woven geotextile products are formed through fine carding,multiple precise needle punching or appropriate hot rolling treatment.Long-fiber needle punched non woven geotextile is made by stretching the fibers through jet drawing,laying them into a fiber web,and then pre-pressing the fiber web through an overheated roller and reinforcing it with needling to form a fabric.The needling needles have hooking needles, repeatedly needling the fiber web,hooking and reinforcing the fibers to form needle punched non woven geotextile.
3.Polyester Filament Geotextile Features
*It has stable physical properties and can maintain its original performance for a long time
*It has stable chemical properties and strong resistance to acids and alkalis
*Good water permeability
*It can withstand high temperatures, freeze and adapt to different external environments
*It is light in weight, can be packaged, transported and stored as required, and is convenient for construction
4.Polyester Filament Geotextile Applications
*Isolation: Geotextiles are used to isolate building materials with different physical properties,preventing the loss and mixing of two or more materials, maintaining the overall structure and function of the materials, and increasing the load-bearing capacity of the materials
*Drainage: Geotextiles are excellent water-conducting materials.They can form drainage channels within soil structures,expelling excess liquids and gases from within the soil structures
*Filtration: When water flows from fine-grained soil layers into coarse-grained soil layers, the excellent air permeability and water permeability of needle punched geotextiles are utilized to allow water to pass through and effectively intercept particles, fine sand, small stones etc., thereby maintaining the stability of water and soil engineering
*Protection: Effectively diffuse, transfer or decompose concentrated stress to prevent soil from being damaged by external forces
*Sealing: Geotextiles, in combination with other materials, form impermeable layers in the soil layer
*Reinforcement: Utilizing geotextiles to enhance the tensile strength and anti-deformation capacity of soil, improve the stability of building structures, and enhance the quality of soil
*Other: Long fiber non woven geotextiles can be combined with other geosynthetic materials such as geogrids, geomembranes, and drainage nets to form composite geosynthetics
Keywords：
PET Non Woven Geotextile