GCL

GCL® Geosynthetic clay liners (GCLs) are manufactured by distributing a uniform layer of the sodium bentonite between two layers of geotextiles. Fibers from the non-woven geotextile are then needle-punched through the layer of bentonite and incorporated into the other geotextile (either a woven or a non-woven). This process results in a strong mechanical bond between the fabrics. A proprietary heat treating process – the Thermal Lock process – is then used to modify and more permanently lock the needle-punched fibers into place.

G-GCL® Geosynthetic clay liners (GCLs) are used as a lining system in landfill, liquid waste and water containment structures to form a barrier that prevents contamination of surrounding groundwater. It is also commonly used to contain liquid in effluent ponds, tailing dams, ponds, lakes, wetlands, irrigation canals and channels.