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Double-rough-surface geomembrane (spray‑roughening process)

Rough-surfaced geomembranes do not replace smooth-surfaced geomembranes; rather, they serve as a functional complement and optimization. They address the core challenge of geomembrane application on steep slopes—stability—and have become an indispensable key material in modern seepage‑control projects. This product employs a one‑step, ultra‑wide‑width, double‑sided roughening process, built upon a 14‑meter‑wide, five‑layer co‑extrusion blow‑molding technology. Through multilayer extrusion of composite high‑polymer materials—such as high‑density polyethylene and functionally modified masterbatches—it achieves a base‑membrane structure with a reinforced core and a functionalized surface layer. The result is a material that delivers a high coefficient of friction and superior slope stability, along with outstanding impermeability, robust mechanical properties, excellent chemical resistance, and long‑term durability, while enhancing deformation resistance and stress‑dispersion capabilities.

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Product Performance
Rough-surfaced geomembranes do not replace smooth‑surfaced geomembranes; rather, they serve as a functional complement and enhancement. They address the core challenge of geomembrane application on steep slopes—stability—and have become an indispensable key material in modern seepage‑control projects. This product employs a one‑step, ultra‑wide‑width, double‑sided roughening process, based on a 14‑meter‑wide, five‑layer co‑extrusion blow‑molding technology. Through multilayer extrusion of composite high‑polymer materials—such as high‑density polyethylene and functionally modified masterbatches—it achieves a base‑film structure with a reinforced core and a functionalized surface layer. It offers a high coefficient of friction and superior slope stability, along with outstanding impermeability, robust mechanical properties, excellent chemical resistance, and long‑term durability, while enhancing deformation resistance and stress‑dispersion capabilities.
Main uses
1. Steep slope areas of environmental protection projects, such as tailings dam slopes, hazardous waste disposal site slopes, and landfill slopes.
2. Steep structural elements in hydraulic, hydropower, and municipal engineering projects, such as steep riverbank slopes, vertical cutoff walls, and tunnel structures.
3. Other scenarios requiring high friction, such as land reclamation projects and steep slopes in rooftop gardens.
Product Specifications
Thickness: 0.5 mm–3.0 mm
Width: 3 m–14 m
Roll length: Manufactured to customer specifications.