METHOD OF PRODUCING COMPOSITE GEOMEMBRANE Russian patent published in 2025 - IPC B32B5/12 B32B5/28 E02D31/02 

FIELD: performing operations.

SUBSTANCE: invention relates to production of geomembranes, in particular, to production of composite geomembrane, which can be used for organization of complete waterproofing, creation of anti-filtration screens, as well as separating, protective, anti-erosion layers. Method consists in the fact that at the first stage, the upper and lower layers of the base are obtained from a polymer nonwoven fabric consisting of oriented reinforcement elements obtained from a thermoplastic polymer and attached to each other, at the second stage, a reinforcing core is formed, consisting of oriented reinforcement elements obtained from a thermoplastic polymer and attached to each other, at the third stage, the upper and lower layers of the base and the reinforcing core are connected to each other by applying a molten polymer, for which at the first stage of the third stage the upper layer of the base is installed on the first shaft of the rewinding machine, wherein a reinforcing core is installed on the second shaft of the rewinding machine, after which both layers are drawn through the system of shafts of the rewinding machine and said layers of the geomembrane are connected with a molten polymer to obtain a composite layer of the first stage, then at second stage of third stage on third shaft of rewinding machine lower layer of base is installed, thereafter, first-stage composite layer and base bottom layer are drawn through rewinding machine rolls and jointed together by fused polymer to produce second-stage composite layer.

EFFECT: simplified process of producing composite geomembrane.

7 cl, 3 dwg