Highly absorbent open cell polymer foam and food package comprised thereof
US7175021B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2003 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Jan 3, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1376
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A highly absorptive open cell foam having a ratio of cell size to pore size of between about 1 and about 10. A juice absorbing food package comprising a tray having a bottom bounded by an upwardly extending lip around the perimeter of the bottom and a liquid-absorbing pad comprised of polymer foam joined to the bottom of said tray, wherein the polymer foam is a highly absorptive open cell foam having a ratio of cell size to pore size of between about 1 and about 10. The tray of the juice-absorbing package may be overwrapped with gas permeable film, and may be provided with an oxygen absorbing substance therein. Alternatively, the overwrapped tray may be placed in a sealed barrier bag that is subsequently purged with a non-oxidizing gas such as carbon dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.