Packaging container provided with an indication for opening
US5156330A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1992 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Feb 12, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D5/065
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Packaging container of a material containing a skeletal layer of plastic and filler mixed into the plastic in a quality of between 50 and 80% of the total weight of the skeletal layer. In order to facilitate the opening of the container the container is provided with a tearing mark incorporated in the packaging material, along which the material in the container must be torn to expose a container opening through which the contents of the container are made accessible. The tearing mark consists of an unbroken recess in the skeletal layer or a similar linear recess weakening the material with a depth of penetration of approximately 10-30% of the total thickness of the skeletal layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.