| 摘要 |
The invention relates to a material in web form, particularly for drainage use, including meshwork made from a plastic material produced by extrusion and formed of a set of parallel longitudinal strands and at least one set of transverse strands, the transverse strands of the or of each assembly being parallel to each other and orthogonal inclined with respect to the longitudinal strands at their intersections. It comprises, bonded onto one face of the meshwork (1), a planar (2), net-like or perforated structure made from a plastic material, exhibiting orifices, the cross-section of which is distinctly less than that of the orifices defined by the meshes of the meshwork. <IMAGE> |
