Encapsulated barrier for flexible films and a method of making and using the same
US7384679B2 · kind B2 · utility
3Cited by
14References
68Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2004 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Aug 30, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A film structure having an inner barrier layer comprised of a blend of a polyamide and ethylene vinyl alcohol copolymer. The polyamide is present in the blend in an amount of from 15-40%, and most preferably from 25-30%. The inner barrier layer is laminated on each side with a layer of a polyamide. The preferred polyamide is nylon, and particularly nylon 6. In a preferred embodiment, the film structure is layered with an oxide or ceramic layer. Included is a method of manufacturing the film and for using the film structure to package a product in a retort packaging process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.