Security paper highly resistant to double folding and method for making same
US7754314B2 · kind B2 · utility
0Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2004 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Aug 6, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24851
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a security paper comprising at least two plies of paper, wherein at least one intermediate layer arranged between the two plies of paper comprises at least one element providing the paper with high double folding resistance, such as defined by the NF ISO 5626 standard, the two plies and said intermediate layer being closely assembled. The invention also concerns a method for making said paper whereby the intermediate layer is deposited by spraying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.