Woven and Nonwoven Geotextile Fabric

• How Are Geosynthetics Made? A Complete Guide to Manufacturing Processes

  Aug 28, 2025

  Geosynthetics are engineering materials used in civil, environmental, and geotechnical engineering, including high-density polyethylene (HDPE) geomembranes, linear low-density polyethylene (LLDPE) liners, geotextiles, and geogrids. Their manufacturing processes vary depending on the material type and intended function. The following details the production processes of the main geosynthetics.   Geomembranes (HDPE, LLDPE, Composites) Geomembranes are anti-seepage barriers made from polymers such as high-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE). Raw Materials: Primary resin (e.g., virgin HDPE/LLDPE granules) Additives: Carbon black (2-3% for UV protection), antioxidants, and stabilizers.   Production Method: Blow molding (applicable to linear low-den...

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