A water and/or oil impermeable sealing mat consisting substantially of a substrate layer, a layer of swellable clay and a cover layer

The invention refers to the sealing mat impermeable to water and/or oil that actually consists of a substrate layer, swellable clay and a cover layer where the substrate layer is made of a non-woven textile material and the layer of the swellable clay is preferentially sodium bentonite in the powder formulation, whereas the cover layer is preferentially made of a non-woven textile material and the layers are quilted together with the procedure of needling. In order to prevent the formation of sliding surface within the layer of swellable clay after the latter has been moistened and swollen, the layers are quilted together. In this way a layer impermeable to water and/or oil is formed with a stable connection of fibres which is suitable for the transfer of the shearing forces which are created on steep slopes, in lining the coasts, dikes and other facilities in hydraulic engineering and the like. In the alternative forms of the performance the substrate layer and the cover layer are used in combination with the woven or knitted fabric as well as with the foil made of synthetic resin. The invention refers to the sealing mat impermeable to water and/or oil that actually consists of a substrate layer, swellable clay and a cover layer where the substrate layer is made of a non-woven textile material and the layer of the swellable clay is preferentially sodium bentonite in the powder formulation, whereas the cover layer is preferentially made of a non-woven textile material and the layers are quilted together with the procedure of needling. In order to prevent the formation of sliding surface within the layer of swellable clay after the latter has been moistened and swollen, the layers are quilted together. In this way a layer impermeable to water and/or oil is formed with a stable connection of fibres which is suitable for the transfer of the shearing forces which are created on steep slopes, in lining the coasts, dikes and other facilities in hydraulic engineering and the like. In the alternative forms of the performance the substrate layer and the cover layer are used in combination with the woven or knitted fabric as well as with the foil made of synthetic resin. Tesnilna ponjava, neprepustna za vodo in/ali olje, ki je v bistvu sestavljena iz podložnega sloja, nabrekljive gline in krovnega sloja, kjer je podložni sloj iz netkanega tekstilnega materiala in je sloj nabrekljive gline prednostno natrijev bentonit v praškasti obliki, medtem ko je krovni sloj pred