Reseal with a partial perforation and method and apparatus for creating a partial perforation in a reseal
US5983770A · kind A · utility
2Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Feb 24, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9314
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A reseal is partially perforated by stretching the reseal membrane, establishing contact between one side of the membrane and an anvil, and by effecting partial penetration of the membrane with at least one cutting edge from the other side of the membrane to a predetermined distance from the anvil. Multiple partial perforations may be made with one or more cutting edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.