METHOD FOR MANUFACTURING A MARKING AND CORRESPONDING PRODUCT

The invention relates to the production of an optically detectable marking on a substrate. In the method, a substrate is taken, a printing ink containing a starch derivative in a solution form is printed on at least a selected first area and at least a selected second area is left unprinted, the pri...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: VIRTANEN, JOUKO, HUTTUNEN, OLLI-HEIKKI, ERHO, TOMI, PELTONEN, SOILI
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The invention relates to the production of an optically detectable marking on a substrate. In the method, a substrate is taken, a printing ink containing a starch derivative in a solution form is printed on at least a selected first area and at least a selected second area is left unprinted, the printing ink is allowed to dry, in such a way that the starch derivative form a thermoplastic film in the said first area on the surface of the substrate, and an optically detectable marking is hot-pressed into the film. The invention also relates to a corresponding product. With the aid of the invention hot-pressable diffractive embossing is created at low temperatures, for example, on paper or board.