Article comprising holographic medium between substrates having environmental barrier seal and process for preparing same
US7173744B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2005 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Dec 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/24044
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an article comprising: a pair of substrates comprising a thermoplastic; a holographic recording medium positioned between the substrates such that the holographic recording medium has at least one exposed area; and an environmental barrier seal protecting the at least one exposed area from environmental degradants; wherein the environmental barrier seal comprises: an inner layer adhered to at least one of the substrates and comprising a thermally meltable adhesive; an outer layer comprising a moisture impervious plastic; and an intermediate layer positioned between the inner and outer layers and comprising an moisture and oxygen impervious metallic foil. The present invention also provides a process for forming such an article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.