Geotextile production process
Geotextile is widely used in civil engineering materials, with filtration, isolation, reinforcement, protection and other functions, its production process includes raw material preparation, melt extrusion, mesh rolling, draft curing, winding packaging and inspection steps, need to go through multiple links of processing and control, but also need to consider its environmental protection and durability and other factors. Modern production equipment and technology have been widely used, making the production efficiency and quality of geotextiles have been significantly improved.
1. Raw material preparation
The main raw materials of geotextile are polyester chips, polypropylene filament and viscose fiber. These raw materials need to be inspected, arranged and stored to ensure their quality and stability.
2. Melt extrusion
After the polyester slice is melted at high temperatures, it is extruded into a molten state by a screw extruder, and polypropylene filament and viscose fiber are added for mixing. In this process, the temperature, pressure and other parameters need to be precisely controlled to ensure the uniformity and stability of the melting state.
3. Roll the net
After mixing, the melt is sprayed through the spinneret to form a fibrous substance and form a uniform network structure on the conveyor belt. At this time, it is necessary to control the thickness, uniformity and fiber orientation of the mesh to ensure the physical properties and stability of the geotextile.
4. Draft curing
After laying the net into rolls, it is necessary to carry out draft curing treatment. In this process, the temperature, speed and draft ratio need to be precisely controlled to ensure the strength and stability of the geotextile.
5. Roll and pack
The geotextile after draft curing needs to be rolled up and packed for subsequent construction. In this process, the length, width and thickness of the geotextile need to be measured to ensure that it meets the design requirements.
6. Quality inspection
At the end of each production link, the quality of geotextile needs to be inspected. The inspection contents include physical property test, chemical property test and appearance quality test. Only geotextiles that meet the quality requirements can be used in the market.