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Polypropylene(PP) continuous filament non woven geotextile

May 30, 2025

1.Introduction

Polypropylene continuous filament non woven geotextile is made from special polypropylene raw materials.It is formed into continuous polypropylene filaments through spinning and stretching, followed by continuous web laying, multiple needling and consolidation, and then expansion and shaping, and finally hot-rolled into a non woven geotextile fabric.

2.Polypropylene Filament Geotextile Features

*Low density: At room temperature, its density is only 0.91g/cm ² (1.38g/cm ² for polyester), making it the lightest material among synthetic fibers

*High mechanical properties: Under the same grammage,polypropylene continuous filament fabric has high tensile strength,high puncture resistance and stable structure

*Good chemical stability: It has excellent acid and alkali resistance

*Good water permeability and drainage performance: Polypropylene material has good hydrophobicity, does not absorb water, does not hydrolyze,and water can easily penetrate through

*Low-temperature resistance: The performance of polypropylene non woven geotextile is almost unaffected at low temperatures

3.Polypropylene Filament Geotextile Advantages

*The chemical properties of polypropylene continuous filament non woven geotextile are extremely stable.Except for concentrated sulfuric acid and concentrated nitric acid, it hardly reacts with other reagents and can be used in an environment with a PH value ranging from 2 to 13 without being affected. Polypropylene continuous filament non woven geotextile can maintain almost 100% of its strength after being soaked in calcium hydroxide solution at 60℃ for three days

*Under the condition of the same gram weight, the lower the density, the greater the number of fibers per unit area, and the thickness of the formed product is also larger than that of other material needle punched geotextiles, and various strength indicators are also higher. Under the same gram weight conditions, polypropylene filament non-woven geotextile has high tensile strength, high puncture resistance and stable structure

*Under the irradiation of 340nm ultraviolet lamps and spraying (for 350 hours), the strength retention rate of 350g of polypropylene continuous filament non woven geotextile with anti-ultraviolet masterbatch added reached over 95%, and some indicators were even better than before irradiation

4.Polypropylene Filament Geotextile Applications

*Sliding layers and isolation layers of high-speed railway ballastless track

*Airport runway isolation layer

*Highway waterproof and crack-proof base fabric

*Anti-seepage cushion layer for subways and tunnels

*Bank protection and bottom protection for water conservancy projects

*Anti-seepage and site closure for solid waste/tailings/landfill sites

*Wrap the blind ditches with crushed stones for isolation and filtration

*Slope protection/isolation and water filtration behind retaining walls