| 摘要 |
A material web includes at least one fibrous material layer and has a first and a second surface. The material web comprises recesses in the first surface, which recesses have a diminishing cross-sectional area along at least a part of their extension in a direction towards the second surface. The material web further comprises recesses in the second surface, which recesses have a diminishing cross-sectional area along at least a part of their extension in a direction towards the first surface, and which form pairs with opposite recesses in the first surface. The recesses in at least some of the pairs are connected to each other via at least one hole. A method for producing such a material web and an article comprising such a material web is also provided.
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