Large surface area geogrid with a high tensile strength, method and apparatus for its manufacture and its use as drain and reinforcement grid

摘要

The present invention provides large surface area geogrids with a high tensile strength, a method and apparatus for producing them, and their use as drain and reinforcement grids and as fences. The method for the continuous production of geogrids which have a large surface area and comprise thermoplastic bars which cross one another and are joined together by welding at the areas where they cross one another is characterized in that single-layer, homogeneous, molecular-oriented plastic bars with a high tensile strength are used and a multiplicity of crossing areas arranged behind one another and next to one another are intermittently welded simultaneously using the vibration-welding technique. Geogrids of this nature are used, for example, to secure road and rail structures, to secure earth, to stabilize slopes and to secure landfill-sealing systems.