Container
US4909411A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1989 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Feb 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1359
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In a can-shaped container comprising: a container body including a cup-shaped container base with a flange at its opening, the container base being formed by using a plate-shaped multi-layer base material made up of an intermediate layer and thermally weldable resin layers formed on both sides of the intermediate layer in such a manner that wrinkles are formed in the cylindrical wall, and an injected resin layer formed on the outer surface of the container base by injection molding in such a manner that the injected resin layer extends from the outer periphery of the flange of the container base, thus forming an injected resin flange, the two flanges forming a lid sealing region; and a lid thermally welded to the lid sealing region of the container body; the outer periphery of the flange of the container base is located at least 1 mm inwardly away from the outer periphery of the injected resin flange, and the sealing strength of the flange of the container base with the lid is greater than the sealing strength of the injected resin flange with the lid, whereby the container will never is broken or blasted when dropped or subjected to retort sterilization, and the lid can be readily…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.