Method of producing lamented embossed webs having equal embossed definition on both sides

摘要

A method of forming a multi-ply web by embossing a first ply (1) between a first pair (2) of matched embossing rolls including a first embossing roll (3) having protuberances formed in a substantially rigid outer surface and a second embossing roll (4) having protuberances formed of a resilient material thereby forming raised portions and recessed portions in the first ply, embossing a second ply (10) between a second pair of matched embossing rolls including a third roll (12) having protuberances formed in an outer surface formed of a resilient material and a fourth roll (14) having protuberances formed in a substantially rigid outer surface thereby forming raised portions and recessed portions in the second ply with the first and second pairs of matched embossing rolls being positioned such that the first embossing roll is positioned adjacent the third embossing roll forming a nip region between the respective protuberances formed in each roll. An adhesive is then applied to the web carried by the third adhesive roll with the first ply and second ply being adhered to one another in the nip region (24) wherein the raised portions of the first and second plies are adhered to one another and the recessed portions of the first and second plies are spaced from one another.