Transfer film
US7820269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2006 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Aug 24, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24917
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Described is a transfer film, in particular a hot embossing film, which includes a carrier film (22) and a transfer layer portion having a structure layer (14), the transfer layer portion being arranged on the carrier film (22) and being detachable from the carrier film (22). It is provided that the carrier film (22) has a master relief structure (22m) on its side towards the structure layer (14), the structure layer (14) on its side towards the carrier film (22) has a first relief structure (14o) complementary to the master relief structure (22m) of the carrier film (22), the structure layer (14) on its side remote from the carrier film (22) has a second relief structure (14u) which differs from the first relief structure (14o), and the second relief structure (14u) is covered at least region-wise with a reflection layer (16). There are further provided a process for the production of the transfer film, a multi-layer body formed with the structure layer and a security document having the multi-layer body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.