Embossing and lamination assembly and relative embossing and lamination method

A embossing and lamination method of multi-ply laminated tissue paper comprising a plurality of paper plies comprising:

• conveying a first paper ply between an upper steel embossing roll and an upper rubber embossing counter-roll to emboss first protuberances on the first paper ply;
• conveying a second paper ply between a lower steel embossing roll and a lower rubber embossing counter-roll to emboss second protuberances on the second paper ply;
• applying glue by a glue delivery assembly on the first protuberances realized by embossing on the first paper ply;
• pressing the first and second paper plies one against the other by a coupling roll acting against the upper steel embossing roll,
• wherein at least one of the embossing the first paper ply or embossing the second paper ply is performed on at least one of the first paper ply or the second paper ply, heated by direct contact with a hot surface of at least one of the upper steel embossing roll or the lower steel embossing roll,
• wherein the heating of the at least one of the first paper ply or the second paper ply is carried out heating the at least one of the upper steel embossing roll or the lower steel embossing roll to a temperature comprised between about 100° C. and 200° C.,
• wherein at least one of the upper rubber embossing counter-roll or the lower rubber embossing counter-roll is mounted on a movable aim, and
• wherein return rolls are arranged around the upper rubber embossing counter-roll and around the lower rubber embossing counter-roll to guarantee a tangential passage of paper between the two pairs of steel rubber embossing rolls without wrapping the respective rubber embossing counter-roll.