Method of fabricating a multilayer barrier packaging material
US5240525A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Aug 30, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for fabricating multilayered high barrier film products providing gas and moisture barrier properties is provided. The film products comprise at least a first polymer film having low permeability to moisture and a polymer blend film containing a gas barrier polymer and a second polymer functionalized for compatibility with the gas barrier polymer and so as to allow the polymer blend film to adhere to the first polymer film. A method for the preparation of multilayered high barrier film products includes the steps of forming a gas barrier polymer film from a polymer blend containing a gas barrier polymer and a second polymer and, bonding a moisture barrier polymer film to at least one side of the gas barrier film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.