Method for equipping papers of value with authenticity features

Paper making and fiber liberation – Processes and products – Safety – identification and fraud preventing paper

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162134, 162110, 427185, D21H 2140, D21H 2324, B44F 112

Patent

active

058977465

ABSTRACT:
In a method for providing papers of value with authenticity features, a homogeneous mixture is produced in a defined concentration from a feature substance present in powder form and a gas. This mixture is ejected at high speed from at least one nozzle disposed at a given distance from the paper web and transferred onto the running paper web.

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