Sealed container for use in cooking with improved heat-seal line
US4834247A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Mar 27, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S229/903
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sealed container for use in cooking which has a heat-sealed portion partially opened when there is an increase in the internal pressure during heat cooking of various kinds of food including frozen foods contained therein so as to prevent rupture or deformation of the container, as well as the possibility of the contents boiling over as a result of rupture of the container. The sealed container of the present invention includes a container body provided at the opening thereof with a flange, and a lid, and a heat-sealed strip capable of peeling off is formed on the flange portion, at least one portion of the heat-sealed strip being formed in such a manner as to project toward the interior of the container, and the outer edge of the heat-sealed strip at that position and an innermost point of the outer edge of the heat-sealed strip being disposed on the inner side of a line connection the starting point of the projecting portion located on the inner edge of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.