A multi-ply tissue paper product includes at least four plies made of tissue paper base-sheet or non-woven. Two inner plies are positioned between a first outer ply on one side and a second outer ply on another side. The two inner plies are flat plies. The first and second outer plies include a micro-embossing pattern. Only one of the outer plies further includes a décor embossing pattern. The multi-ply tissue paper product is configured to provide improved thickness and strength parameters with less use of paper fiber material.

Disclosed are embossed, multi-ply tissue products having consumer preferred physical properties and an aesthetically pleasing appearance. The products may have a first ply embossed with a first pattern comprising line emboss elements and a second ply embossed with a second embossing pattern comprising dot emboss elements. In addition to having plies with different embossing patterns, the plies may have different tensile strength, such as a first ply having a geometric mean tensile (GMT) strength greater than 500 g/3″ and a second ply having a GMT less than 500 g/3″. Preferably the difference in the GMT between the first and second plies is at least about 20 percent, such as from about 20 to about 50 percent.

This disclosure relates to an apparatus for manufacturing a tissue paper product, such as toilet paper or household towel. The apparatus comprises an embossing unit comprising a first counter roll, a first heatable embossing roll, a second counter roll, and a second heatable embossing roll, and a marrying roll. The apparatus is configured to emboss a first ply between the first heatable embossing roll and the first counter roll, to emboss a second ply between the second heatable embossing roll and the second counter roll, and to ply-bond the first ply and the second ply between the first heatable embossing roll and the marrying roll.

An embossing group with interchangeable rollers for the surface processing of tissue paper comprises a frame (13) bearing three pairs of steel embossing rollers (17), each pair being movable between a first operative position for embossing two paper plies (11, 12) and rest positions, as well as it comprises two rubber-coated rollers (19, 20) which can be coupled with the pair of embossing rollers (17) placed in the operative position, and it further comprises two pairs of rotating supports (14, 15), wherein each one is provided with three arms (16), each one bearing at the end a locking element (18) for one end of an embossing roller (17), the rotating supports (14, 15) being constrained to the frame (13) rotating around their own central axis.

An embosser/laminator machine has an adhesive unit releasably connectable with a main frame structure of the machine, and a roll extractor configured to move a roll between the main frame structure and an exchange position between the main frame structure and the adhesive unit when the adhesive unit is spaced from the main frame structure during removal and installation of the roll. The sub-frame comprising the adhesive unit may be formed with a bearing cap that cooperates with the main frame structure such that when the adhesive unit is connected with the main frame structure, the roll is operatively secured to the machine between main frame structure and the sub-frame of the adhesive unit for normal operation of the machine. When the sub-frame comprising the adhesive unit is released and spaced from main frame structure, the roll may be removed from and installed into the main frame structure.

A tissue product with at least four plies made of tissue paper base sheet or nonwoven comprises: a first outer ply and a second outer ply and at least two inner plies between the first outer ply and the second outer ply, wherein only one of the inner plies is un-embossed; the outer plies comprise a micro-embossing pattern; at least one of the outer plies comprises a décor embossing pattern; and at least two adjacent inner plies comprise the un-embossed inner ply and one micro-embossed inner ply; wherein the density of the micro-embossed protrusions of the micro-embossed inner ply is different to the density of further embossed protrusions of the micro-embossing pattern of the outer ply which is adjacent to the micro-embossed inner ply.

An embossing device and a method for embossing, employing an electromagnetic induction device such as to induce an eddy current prevalently on the outer surface of an embossing roller. The eddy currents are such as to prevalently heat the outer surface of the embossing roller.

An embossing group includes: a first embossing roller and at least one embossing unit associated with the first roller. The embossing unit includes a second embossing roller, a third embossing roller, and a sleeve surrounding the second roller and the third roller by coupling them. The sleeve faces the first roller and is configured to contact the first roller. The embossing unit and the first roller are configured to emboss at least one paper sheet wound between the first roller and the embossing unit.

Disclosed are multi-ply embossed tissue products having improved softness, strength, embossment clarity and/or embossment height compared to prior art embossed tissue products. The multi-ply tissue products may comprise an embossed tissue ply having a basis weight less than about 25 grams per square meter (gsm) and relatively deep embossments, such as an embossment height from about 500 to about 1,000 μm and relatively narrow bottom portions compared to top portions. The combination of these elements provides an aesthetically pleasing and well-defined embossment, while improving important tissue product properties such as sheet and roll bulk and softness.

Disclosed are multi-ply embossed tissue products having improved softness, strength, embossment clarity and/or embossment height compared to prior art embossed tissue products. The multi-ply tissue products may comprise an embossed tissue ply having a basis weight less than about 25 grams per square meter (gsm) and relatively deep embossments, such as an embossment height from about 500 to about 1,000 μm and relatively narrow bottom portions compared to top portions. The combination of these elements provides an aesthetically pleasing and well-defined embossment, while improving important tissue product properties such as sheet and roll bulk and softness.