Self-venting polymeric film
US8197925B2 · kind B2 · utility
10Cited by
15References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2004 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Jul 20, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A heat-scalable, composite film said film comprising a polymeric substrate layer having a first and second surface and disposed on a surface of the substrate layer a water-soluble barrier layer, wherein (i) the substrate layer has one or more venting means therein; and (ii) the thickness of the barrier layer is from about 0.05 to about 40 μm; a process for the manufacture thereof; and use thereof as a self-venting film in the packaging of an ovenable meal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.