Apparatus and method for ply bonding as well as multi-ply product

Apparatus for bonding at least two plies of a fibrous web, comprising:

• a first roller having an outer periphery, at least one embossing protuberance being provided on the outer periphery;
• and
• a second roller having an outer periphery and being elastic at least in a radial direction, the second roller comprising at least an inner layer and an outer layer that is harder than the inner layer, the second roller together with the first roller forming a nip through which the at least two plies are to be fed,
• wherein an embossing element is located on top of the at least one embossing protuberance, an embossing area of the embossing element being smaller than an embossing area of the at least one embossing protuberance, and the embossing element presses the at least two plies against the most radially outward surface of the second roller or of the first roller so that the at least two plies are bonded at a discrete location corresponding to the embossing element, the embossing element being smaller in height than the at least one embossing protuberance.