Pucker resistant film and package
US6833170B1 · kind B1 · utility
8Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2003 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Sep 29, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flexible food package with a wall comprised of thin film layers, one of which has a reduced permeability characteristic that reduces absorption by the package wall of oils associated with the food product in the package. The reduced permeability characteristic is achieved by an enhanced orientation or enhanced crystallinity of the polymers forming the thin film layer. Reducing the amount of oil absorbed by the package wall reduces the amount of swelling, puckering, and disfigurement of the package.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.