Decorative foil
US6602578B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2001 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Oct 1, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24612
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A decorative foil (1) has a laminate structure comprising at least two layers (2; 3). The layers (2; 3) include a for example transparent base foil (2) which is coated on side with a reflection layer (3). A protective layer (4) can protect the reflection layer (3) from external influences. The shaping surface (7) of the base foil (2), which is towards the reflection layer (3), has a structure, obtained by shaping, of groups of geometrical shapes. An area occupied by the group is of width of between 30 &mgr;m and 300 &mgr;m. Elements (14) of the group, which are shaped in the base foil (2), are of a substantially rectangular cross-section, wherein the surface occupied by the group is composed of element surfaces (9 through 11) which are in a parallel plane (8) with respect to the shaping surface (7) and residual surfaces (13) which have remained in the plane of the shaping surface (7). The surfaces occupied by the groups are separated by regions of a background area in the plane of the shaping surface (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.