Barrier film
US7288311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2004 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Oct 14, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A barrier film is provided having extremely high barrier properties and a good transparency as part of a laminated material having use as a packaging container which may possess an image display medium, the high barrier properties and good transparency which are achieved with a barrier film comprised of a base material film and a barrier layer deposited on at least one side surface of the base material film, with the barrier layer comprising a water repellent layer and a dense layer, the water repellent layer being a silicon oxide carbide film having the atomic percent of Si:O:C in a range of 100:40 to 120:80 to 160, and the thickness in a range of 2 to 300 nm, and the dense layer being a silicon oxide carbide film having the atomic percent of Si:O:C in a range of 100:100 to 200:5 to 100, and the thickness in a range of 5 to 300 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.