Container closure having weaker opening means
US4448324A · kind A · utility
14Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1983 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | May 3, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2517/0088
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container closure of the composite type comprising a supporting and protecting part of plastics, having a central panel and a circumferential flange, and a thin metal foil acting as sealing label, attached to said part. A tearing denotation is formed in a multi step injection moulded weld zone and a sealing label is arranged to cover at least the weld zone of the container part. The weld zone includes abutment surfaces of the sequentially moulded parts acting as stop members preventing free relative movement between said parts after the weld zone is broken.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.