All polyester film composite useful for credit and identification cards
US5171625A · kind A · utility
45Cited by
8References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Jan 31, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to an all polyester composite film structure having: (a) an opaque, biaxially oriented polyester support core film, (b) a clear, biaxially oriented polyester top film, and (c) a first pair of dye receptive or printable receiver films that can be heat sealed together and sandwiched between the top surface of the core film and one surface of the top film wherein at least one surface of a receiver film of the first pair of receiver films is printed with a dye to form printed matter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.