At P+S, paper wall coverings are printed using the rotogravure printing process. Rotogravure is a particularly high quality printing process enabling the finest spot colour blends as are known, for example, from illustration printing and high grade art prints.
The printing process is followed by lamination and embossing to finish the wallpaper. Lamination means that a second paper web is glued underneath the upper paper face using a special adhesive. During the subsequent embossing process, the glued and still moist wallpaper webs are pressed together between a positive steel roller and a negative paper roller. The paper webs are now joined together and show the required structure as defined by the steel roller used.
After the drying process in the corresponding channels, the edges are serged and the wallpapers cut to size, rolled up and packed.
Laminated and embossed wallpapers can be affixed without any problems and have enhanced dimensional stability of the imprint compared with single-layer papers.