Method for making an absorbent structure

A method of manufacturing an absorbent structure having at least two plies with each ply constituted of at least one embossed absorbent paper sheet, said method comprising

• engaging the at least two plies between a first engraved cylinder and a second engraved cylinder, each engraved cylinder having protrusions with troughs between the protrusions and being driven in synchronized rotation, wherein a play is provided between tops of the protrusions of the first engraved cylinder and opposing surfaces in the troughs of the second engraved cylinder,
• prior to insertion of the at least two plies between the first engraved cylinder and the second engraved cylinder, matching each ply in shape totally or partially to a surface of an associated engraved cylinder by applying each ply against an associated engraved cylinder by an associated compressing cylinder having a flexible cladding material thereon,
• applying an adhesive onto salient zones of at least one ply of said at least two plies before the at least two plies are engaged between the first engraved cylinder and the second engraved cylinder, and
• combining the at least two plies by bonding following mutual engagement of the at least two plies between the first engraved cylinder and the second engraved cylinder by forcing the at least two plies against one engraved cylinder by a laminator roll fitted with a flexible cladding,
• wherein said play is less than a depth of the protrusions of the first engraved cylinder or of the second engraved cylinder and said play is larger than a sum of thicknesses of the at least two plies matched in shape so that the at least two plies are not compressed in any region when engaged between the first engraved cylinder and the second engraved cylinder.