Abstract: An absorbent multi-layer sheet, with at least two layers each constituted of at least one embossed ply of creped absorbent paper having a specific surface weight between 10 and 40 g/m.sup.2 per ply, with an external surface forming the outer side of the multi-layer sheet and an inner surface, the inner surface of the first layer including first and second protrusions and the inner surface of the second layer including third protrusions nested between the-protrusions of the first layer, the two layers being bonded together by at least part of the protrusion tips of one layer adhesively joined to the other layer between two protrusions, is characterized in that the bonding is implemented by the first protrusions of the first layer, the second protrusions having a lesser height than the first ones and their tips being adhesive-free.

Abstract: A method for embossing a sheet of creped paper composed of at least one ply, whereby the sheet is engaged between two metallic cylinders fitted with protrusions and driven in rotation in a conventional manner and mesh with each other while having a play e1 between the tops of the protrusions of one cylinder and the opposite surface of the other cylinder, and a play e2 between the slopes of two adjacent protrusions wherein e1 and e2 are determined in the direction transverse to the direction of paper advance in such a manner that the ratio of e1/e2 is between 0.8 and 1.

Abstract: A paper sheet having several distinct layers comprised of at least two plies of paper glued together in discrete areas and characterized by having patterns which correspond to areas of reduced thickness on both outer surfaces of the plies of paper.

Abstract: The present invention is directed to an embossed ply suitable for use in a multi-ply, embossed paper. The embossed ply has bosses of two different depths wherein the bosses having a greater depth or the "big bosses" alternate with the more shallow bosses or "small bosses". When the embossed ply is used to form a multi-ply paper, the small bosses are arranged in a tip-to-tip relation with bosses in a second embossed ply, while the big bosses of the first ply are positioned to nest between the bosses of the second ply. Furthermore, a method and apparatus for manufacturing the embossed, multi-ply paper is described.

Abstract: A method for printing and embossing sheets of paper made of cellulose wadding and with two or more plies, characterized in that one of the plies is directly printed on the embossing roller using one or more printing systems mounted on the embossing systems, and in that this ply is associated with another embossed and glue-sized ply to form a sheet in such manner that the print inks are located on the sheet's inner side between the two or more plies.

Abstract: A combined sheet material including at least two absorbent sheets, such as of cellulose-cotton, each having a density of between from 10 to 40 g/m.sup.2. Each of the sheets is separately embossed by calendaring them into a pattern of protuberances distributed in a first pitch along a first direction for each sheet (P.sub.1 sm, P.sub.2 sm) and in a second pitch in a second direction for each sheet (P.sub.1 st, P.sub.2 st) which subtends the first direction at an angle other than zero. The end of the protuberances extending away from the plane of each of the sheets includes a flat bonding element whereby the two sheets are bonded to each other, preferably by gluing. The pattern of each of the sheets is characterized in that the first pitch of each sheet along the first direction is different and related by the equation..vertline.1/P.sub.1 sm-1/P.sub.2 sm.vertline..gtoreq.