APPARATUS AND METHOD FOR PLY BONDING AS WELL AS MULTI-PLY PRODUCT

摘要

Apparatus for bonding at least two plies (13, 14) of a fibrous web, comprising: a first roller (10) having an outer periphery, at least one embossing protuberance being provided on the outer periphery; and a second roller (20) 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 (13, 14) are to be fed, wherein an embossing element is located on top of at least one of the embossing protuberance (s), an embossing area of each embossing element being smaller than an embossing area of the corresponding embossing protuberance (s) so that the at least two plies (13, 14) are bonded at discrete locations corresponding to the first and second embossing elements. Multi-ply product comprising the bonded plies and corresponding method.