Security foil or security label comprising a manipulation detection system
US8857856B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2010 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Apr 22, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D2033/24
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A security foil includes two or more carrier substrates which have at least one optically active structure and at least two metal layers. The security foil is composed as follows: a) a first carrier substrate, b) a first radiation-curable lacquer layer into which an optically active structure is incorporated, c) a first metal layer, d) a protective lacquer layer, e) an adhesive layer, f) a second carrier substrate, g) a second radiation-curable lacquer layer, h) a second metal layer, i) optionally a protective lacquer layer, and k) optionally an adhesive coating. The adhesion between the layers g) and h) or f) and g) is significantly lower than the adhesion between the remaining layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.