Microwavable food package having a bag with reverse folded gussets
US5460839A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Feb 7, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2581/3494
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An expandable collapsed bag, preferably made of paper, suitable for cooking corn in a microwave oven. The bag of the invention has front and back panels and two side panels, each side panel having two or more gussets. These gussets permit relatively free upward movement of the corn and fuller expansion of the bag during cooking. In its collapsed configuration, the back panel is folded to expose a portion of each side panel that forms one gussets. The collapsed bag thereby forms strips extending along each side edge in which the bag is four layers thick. Since a conventionally folded, two gusseted bag has six layers along its edges, the reverse folded bag is thinner and, therefore, advantageous from handling, shipping and storage viewpoints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.