Security sheet comprising a transparent or translucent layer
US8658273B2 · kind B2 · utility
1Cited by
12References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2001 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Jul 3, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a coated sheet of security paper which includes security elements and has a high print rendition and a high resistance to circulation, which sheet is characterized in that at least one of its sides is coated with a transparent or translucent coating comprising at least one colloidal silica and at least one transparent or translucent elastomeric binder. In particular, the binder is a polyurethane.The invention also relates to the process for manufacturing the said sheet and to a banknote obtained from this sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.