| 摘要 |
<p>A description is given of a device and a method for producing a web material comprising at least two layers (V1, V2), at least one of which is embossed with a first set of protuberances (P1, P2), said two layers being joined to each other by gluing and lamination. The material has at least one portion in which said layers are not laminated together and therefore are not glued to each other.</p> |
