Description of PET staple needle-punched nonwoven geotextile
Production of PET staple needle-punched nonwoven geotextile
PET staple needle-punched nonwoven geotextile is a geosynthetic material produced by needle-punched nonwoven process using PET (polyethylene terephthalate) staple fiber as the main raw material. It can be applied to various terrains such as soil, rock, sand, etc. PET staple needle-punched nonwoven geotextile is made by automatically wrapping the fibers with barbed needles to bond the staple fibers or continuous filaments. Needle-punched nonwoven fabric is a kind of dry nonwoven fabric. Needle-punched nonwoven fabric uses the puncture of needles to reinforce the fluffy fiber net into cloth. It can save installation time and is an economical alternative to other geosynthetics.
PET staple needle-punched nonwoven geotextile is a cloth-like material made of polyester (PET) polymer synthetic fibers through processes such as opening, combing, messing, laying nets, and needle punching.
- Fiber opening: The polyester polymer synthetic fibers are opened to form loose fiber bundles.
- Combing and messing: The opened fiber bundles are combed and messed by a carding machine to make them evenly distributed.
- Laying nets: The messed fibers are laid into a mesh structure by a laying net machine.
- Needle punch reinforcement: Use a needle punch machine to needle punch the laid fiber net to form a tight and strong geotextile.
Features of PET staple fiber needle punch nonwoven geotextile
- High strength: PET staple fiber needle punch nonwoven geotextile has high tensile strength and tear strength, and can withstand large external forces.
- Good permeability: The material has good water permeability and air permeability, which can effectively remove moisture and gas from the soil and maintain the stability of the soil. The needle punch aperture quickly seeps water.
- Corrosion resistance: Staple fiber needle punch nonwoven geotextile can resist chemical corrosion and biological erosion and has good durability.
- Convenient construction: The material is light, soft, easy to cut and splice, and the construction is simple and fast.
- Tensile strength: good elongation at break.
Construction method of PET staple fiber needle punch nonwoven geotextile
1. Roll it manually;the cloth surface should be flat, and leave an appropriate deformation margin.
2.Overlap, stitching and welding. Usually a welding machine is used for laying and welding.
The main functions of PET staple needle-punched nonwoven geotextile
Isolation function: It can separate materials or soil layers of different properties to prevent them from mixing with each other, and ensure that each layer of materials or soil layers can play their respective functions. For example, in highway construction, the roadbed and pavement materials can be separated to prevent the pavement materials from being embedded in the roadbed and affecting the stability of the roadbed.
Filtration function: It can effectively filter fine particles such as silt in the water flow, allowing water to pass while preventing the loss of soil particles, playing a role in protecting the soil structure and preventing soil erosion. It is often used in riverbank protection and dam drainage in water conservancy projects.
Drainage performance: It forms a drainage channel inside the soil body, discharges excess liquid and gas in the soil structure, reduces the pore water pressure in the soil body, and enhances the stability of the soil body. It can be used in the drainage system of roads, airports and other projects.
Reinforcement effect: Enhance the tensile strength and deformation resistance of the soil, improve the overall stability of the soil, reduce the deformation and damage of the soil under load, and are often used in the reinforcement of weak foundations, slope protection and other projects.
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