Device for the production of multi-ply web material with different size and density patterns on different plies

An embossing device for producing an embossed web material comprising at least two plies which are embossed and joined together, comprising

• a first embossing unit including a first embossing cylinder having a first set of protrusions, and a first pressure cylinder which interacts with said first embossing cylinder to form on a first ply a first set of embossments having a first size and a first density;
• a second embossing unit including a second embossing cylinder having a second set of protrusions, and a second pressure cylinder which interacts with said second embossing cylinder to form on a second ply a second set of embossments having a second size, said second size being larger than said first size, and a second density, said second density being lower than said first density;
• a laminating cylinder interacting with said second embossing cylinder to form a nip to receive said first ply and said second ply after having said first embossments and said second embossments, respectively, formed thereon, and said laminating cylinder and said second embossing cylinder further interacting to flatten embossments of said first embossments which are in correspondence with embossments of said second embossments as the first ply and the second ply move through said nip;
• and
• an adhesive dispenser for applying an adhesive to one of said first ply or said second ply prior to receipt in said nip.