background wallpaper paper

wallpapers are produced from a variety of printing techniques. Three popular printing methods are gravure, rotary and silk-screen. During the first process, a photographic negative of the pattern is exposed to the screen, which is coated with a light-sensitive emulsion. The emulsion then hardens on the areas that are not covered by the negative. Afterwards, the wallpaper must be rewetted to achieve adhesion.

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