Cards and laminates incorporating multilayer optical films
US7271951B2 · kind B2 · utility
172Cited by
37References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 2005 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Oct 28, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D2035/34
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
New constructions of multilayer optical films, laminates thereof, and cards incorporating same are disclosed. In a card, the multilayer optical film can be sandwiched between relatively thick polymer layers using adhesive layers that are at least 0.5 mils thick but that may collectively account for no more than 3 mils of thickness. The cards can if desired be highly transmissive in the visible yet highly opaque in portions of the infrared. The resulting cards can have reduced angel hair formation during card stamping, increased resistance to delamination, and reduced haze.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.