Patent · US Active

Method and film system for producing a personalised, optically variable element

US7771629B2 · kind B2 · utility

0Cited by

3References

16Claims

0Family size

Assignee

LEONHARD KURZ Stiftung & Co. KG · DE

Inventors

Haymo Katschorek · Herzogenaurach, DE
Werner Reinhart · Zirndorf, DE
Mathias Seitz · Buckenhof, DE

Key dates

Filing date	Sep 9, 2004
Grant date	Aug 10, 2010
Priority date	—
Expiry date	Jul 2, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG03H2250/40
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention concerns a process for the production of a personalised, optically variable element having polarising properties, and a film system for carrying out the process. To produce the optically variable element a film body which comprises two or more layers and which has an LCP layer comprising a liquid crystal material is applied to a substrate body which has an orientation layer for the orientation of liquid crystals. The orientation layer of the substrate body is personalised prior to application of the film body to the substrate body. The film body is then applied to the personalised orientation layer of the substrate body in such a way that the LCP layer of the film body lies on the personalised orientation layer of the substrate body for then orientation of liquid crystals of the LCP layer of the film body.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.