Laminated sheet with security marking, and method for making such a sheet

Multilayer sheet material with security marks comprises a sheet of base material and a heat-sensitive layer and has at least one pressure-sensitive layer which produces visible markings when subjected to pressure. An Independent claim is also included for a process for the production of this materia...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SPANGENBERG, MANFRED
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	COLOUR PRINTING DECORATIVE ARTS LINING MACHINES PERFORMING OPERATIONS PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SPECIAL DESIGNS OR PICTURES STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	Multilayer sheet material with security marks comprises a sheet of base material and a heat-sensitive layer and has at least one pressure-sensitive layer which produces visible markings when subjected to pressure. An Independent claim is also included for a process for the production of this material, in which the base material is first provided with a heat-sensitive layer and then coated on the other side with a pressure-sensitive layer from a separately produced coating material.