Bentonite mats with weldable geomembrane — double anti-seepage liner

Here a standard bentonite mat is joined by cold lamination to a weldable polymer geomembrane, producing a double anti-seepage liner: membrane plus bentonite. The sheets are laid with a double overlap — the membrane is welded with a hot-wedge welder with a double seam or with a hand extruder, and the geotextile backing is joined by a controlled overlap. The liner resists shifting, settlement and cracking of the soil and is intended for mining, processing and agricultural facilities in difficult hydrogeological and climatic conditions.