(1) Core raw materials

       The raw materials for woven geotextiles are primarily synthetic fibers, balancing performance and cost-effectiveness. Polypropylene (PP) accounts for over 60%, while polyester (PET) makes up approximately 30%. In some special scenarios, materials like polypropylene-coated polyethylene flat yarn may be used. All are modified with anti-UV, anti-aging, and anti-acid/alkali treatments to ensure long-term stability in complex geotechnical environments and prevent performance degradation due to environmental erosion. Among these, slit-film polypropylene constitutes 70% of the woven geotextile materials, while monofilament polyester accounts for about 20%. The selection of different materials depends on the project’s tensile requirements, service life, and environmental corrosiveness.

(2) Production Process

       R1: "Anti-aging" must be translated as “anti-aging.”  The production core process is divided into three steps:  First, raw materials such as polypropylene and polyester are melted and extruded to form continuous fibers or flat filaments, which are then stretched and shaped to enhance fiber strength and toughness.  Second, industrial weaving machines interlace warp and weft yarns at a certain density. The weaving process is categorized into three types: plain weave, twill weave, and satin weave. Different weave patterns directly affect the product’s tensile strength, permeability, and overall stability—plain weave features a regular structure and excellent breathability, twill weave offers higher tensile strength, while satin weave combines toughness and smoothness.  Third, post-processing steps such as heat setting, anti-aging spraying, and edge trimming are applied to the woven fabric to ensure dimensional stability, eliminate burrs, and maintain a defect rate below 1%, ultimately producing engineered-standard woven geotextiles.  The entire production process utilizes automated weaving machines, significantly improving efficiency while ensuring consistent product performance.