Additional treatments that may be required by a packaging to enhance the printing effect, to confer prestige and luxury or to make it safe are many and are implemented right after the stage of printing. Such treatments are varnishes that stabilize colors after printing, lamination that is used to give strong external gloss or make the interior of the box leakproof, and metallic finishes in silver or gold. Other external treatments are gold or silver hot stamping, embossing and spot UV. Finally, the special addition of a “window” in different shapes after request, allows the contents to be seen.