Vacuum skin package and composite film therefor
US5770287A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1996 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Sep 17, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3192
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite film and vacuum skin package for packaging a product such as a fresh red meat is disclosed. The composite film is thermoformed and sealed under vacuum to a support member to completely enclose a product which is positioned on the support member. The composite film is a permeable film weakly bonded to an impermeable film, permitting the impermeable film to be peeled from the package while leaving the permeable film intact so that the fresh red meat product can bloom from a purplish color to a desirable red color upon exposure to oxygen. The permeable and impermeable films are fully peelable without the need for a migratable wax to enhance peelability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.