A multiple roller embosser and method for selecting an embossing roller

An embosser comprising:

• a first load-bearing structure, on which a plurality of first embossing rollers is supported, each first embossing roller of said first embossing rollers having a respective rotation axis, wherein the first embossing rollers are rotatably mounted on a movable support, the movable support being movable with respect to the first load-bearing structure;
• and wherein the movable support is provided with a selection movement with respect to the first load-bearing structure, to selectively arrange in an operating position one of said first embossing rollers mounted on the movable support;
• a first pressure roller adapted to form a first embossing nip with the one of the first embossing rollers which is in the operating position;
• wherein the first pressure roller is supported on the first load-bearing structure;
• a first path for a first ply of web material, said first path extending through the first embossing nip;
• a second load-bearing structure, on which at least a second embossing roller is rotatably supported;
• a second pressure roller adapted to form, with said at least a second embossing roller, a second embossing nip;
• wherein the second pressure roller is supported on the second load-bearing structure;
• a second path for a second ply of web material extending around the second pressure roller;
• wherein the first load-bearing structure and the second load-bearing structure are movable relative to each other to take a position of mutual approach and a position of mutual distancing;
• wherein the position of mutual distancing is such that the first embossing rollers can be moved relative to the first load-bearing structure to perform the selection movement of the movable support.

A method for selecting an embossing roller in an embosser, comprising steps of:

• stopping the embosser;
• moving a first load-bearing structure and a second load-bearing structure away from each other;
• moving a movable support, on which a set of first embossing rollers are rotatably mounted, away from the first load bearing structure to remove one of said first embossing rollers from an operating position and bring another one of said first embossing rollers into the operating position;
• bringing the second load-bearing structure and the first load-bearing structure back together again after bringing said another one of said first embossing rollers into the operating position;
• restarting the embosser.