| 摘要 |
The present invention concerns a method for producing an apertured structure in a material web (1; 41; 81), which comprises at least one fibrous material layer (2, 3; 42, 43; 82, 83) and has a first and a second surface (8, 11) situated on opposite sides of the material web (1; 41; 81 ), which method comprises the first step of forming recesses (5) in said first surface (11), which recesses (5) extend in the thickness direction of the material web (1; 41; 81 ). The method further comprises the second step of forming holes (9, 10) in at least some of said recesses (5) in said first surface (8), which holes (9, 10) each connect a recess (5) in said first surface (8) with said second surface (11 ). The present invention also concerns a material web (1; 41; 81) manufactured in accordance with said method. |
