At the beginning of the new crown epidemic in 2020, due to the surge in demand for masks, non-woven fabrics have become the focus of many people’s attention. During the search for non woven fabrics, many people discovered that there is another kind called non woven geotextile. Because the two products have the same name, they have caused troubles for many people: Are geotextiles and non-woven fabrics the same? In fact, non woven geotextiles and non woven fabrics are not the same thing. The following is a detailed introduction to the two The difference and the difference.

The properties of geotextile and non woven fabric are different

1. Geotextile properties

Geotextile, also known as geotextile, is a permeable geosynthetic material made of synthetic fibers through zhen ci or weaving. Geotextile is one of the new materials and geosynthetics. The finished product is cloth-like, with a width of 4-6 meters and a length of 50-100 meters. Geotextiles are divided into woven geotextiles and non-woven filament geotextiles.

2. Non woven fabric properties

Non woven fabric, also known as non woven fabric, is composed of directional or random fibers. It has the characteristics of moisture-proof, breathable, flexible, light weight, non-combustible, easy to decompose, rich in color, low price, and recyclable. For example, polypropylene (PP material) pellets are often used as raw materials, which are produced by continuous one-step method of high-temperature melting, spinneret laying, and hot-press coiling. It is called cloth because of its appearance and certain properties.

Geotextiles and non woven fabrics have different uses

1,The use of geotextile

Isolation

The use of polyester staple fiber needle-punched geotextiles for building materials with different physical properties (particle size, distribution, consistency and density, etc.)

Materials (such as soil and sand, soil and concrete, etc.). Makes two or more materials not lost or mixed, keeping materials

The overall structure and function of the materials strengthen the load-bearing capacity of the structure. 

Filter (reverse filter)

When the water flows from the fine material soil layer into the coarse material soil layer, the good air permeability and water permeability of the polyester staple fiber needle-punched geotextile are used to make the water flow

Pass, and effectively intercept soil particles, fine sand, small stones, etc., to maintain the stability of water and soil engineering.

Drainage

Polyester staple fiber needle-punched geotextile has good water conductivity, it can form a drainage channel inside the soil, and make the soil structure more

The remaining liquid and gas are discharged outside.

Reinforcement

Use polyester staple fiber needle-punched geotextiles to enhance the tensile strength and deformation resistance of the soil, enhance the stability of the building structure, and improve

Good soil quality. 

Protection

When the water flow scours the soil, it effectively spreads, transmits or decomposes the concentrated stress, prevents the soil from being damaged by external forces, and protects the soil.

Anti-puncture

Combined with the geomembrane, it becomes a composite waterproof and impermeable material, which plays a role of preventing puncture.

High tensile strength, good permeability, air permeability, high temperature resistance, freezing resistance, aging resistance, corrosion resistance, and no insects.

Polyester staple fiber needle-punched geotextile is a widely used geosynthetic material. Widely used in the reinforcement of railway subgrades and highway pavements

Maintenance, sports halls, protection of dams, isolation of hydraulic structures, tunnels, coastal beaches, reclamation, environmental protection and other projects.

2,The use of non woven fabric

(1) Medical and sanitary non woven fabrics: surgical gowns, protective clothing, masks, diapers, civilian wipes, wipes, wet face towels, magic towels, soft towel rolls, beauty products, sanitary napkins, sanitary pads, disposables Sanitary cloth, etc.

(2) Non woven fabrics for home decoration: wall coverings, tablecloths, bed sheets, bedspreads, etc.

(3) Non woven fabrics for clothing: linings, fusible interlinings, flakes, shaped cotton, various synthetic leather base fabrics, etc.

(4) Industrial non woven fabrics; base materials, reinforcement materials, polishing materials, filter materials, cement packaging bags, geotextiles, covering fabrics, etc. for roofing waterproof membranes and asphalt shingles

(5) Agricultural non woven fabrics: crop protection cloth, seedling cloth, irrigation cloth, thermal insulation curtain, etc. (6) Other non woven fabrics: space cotton, thermal insulation materials, linoleum, cigarette filters, tea bags, shoe materials Wait.

The production process of geotextile and non woven fabric is different

1. The production process of geotextile

Short-filament geotextile is made of short-fiber polyester or polypropylene as the raw material, through the bag opener to open the bag, the opener to open the bag, and then enter the storage box, followed by rollers to compact, and then spread four to five layers of nets, and then through The three processes of barb and main needling are then stretched and trimmed to form; while the filament geotextile is made of polyester chip pellets through high temperature melting and plasticization, punching into a net, and then going through two processes of pre-needling and re-needling. , And then cut and stretched.

2. The production process of non woven fabric

Polymer (polypropylene + back material)-large screw high temperature melt extrusion-filter-metering pump (quantitative delivery)-spinning (spinning inlet up and down drawing and suction)-cooling-air traction ——Net curtain formation——Upper and lower press rolls (pre-reinforcement)——Hot rolling on rolling mill (reinforcement)——Winding——Inverted cloth slitting——Weighing and packaging——Product storage