Peel mechanism for peelable barrier film for vacuum skin packages and the like
US5979653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Dec 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/2007
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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 gas-permeable film weakly bonded to a gas-impermeable film, permitting the gas-impermeable film to be peeled from the package while leaving the gas-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. A peel initiation mechanism which is a grippable film sealed along an edge of the gas-impermeable film is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.