Security document and method of producing it

US6294241A · kind A · utility

Assignee

• GIESECKE & DEVRIENT GMBH · DE

Inventors

• Wittich Kaule · Grafing, DE
• Gregor Grauvogl · Hersbruck, DE

Key dates

• Filing date: May 8, 1998
• Grant date: Sep 25, 2001
• Expiry date: May 8, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31993
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A transfer foil for use in a safety document includes a multilayer structure having a carrier layer and a plastic layer in which diffraction structures, for example holographic structures, are embossed in the form of a relief structure and which is combined with a reflective layer. The plastic layer includes a reaction lacquer layer selected from the group consisting of cationical curing lacquers, blue light-curing lacquers and chemical curing multicomponent lacquers.