Packaging article with offset vented seal
US6214392A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Mar 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S426/805
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A packaged product comprises a packaging article and a product surrounded by the packaging article. The packaging article comprises a flexible packaging film. The packaging article has a seal along one edge thereof, the seal comprising two seals each having a gap therein, i.e., a vent, which allows air within the package to escape during stacking of the bags on, for example, a pallet. The vents also allow air to reenter the bag so that the bags maintain a uniform appearance for display and sale. The vents are offset from one another, to provide a tortuous path into and out of the packaging article, to minimize the escape of the product and the entry of foreign objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.