Plastic container and breakable sealing unit ultrasonically welded thereto
US4011961A · kind A · utility
27Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1975 |
| Grant date | Mar 15, 1977 |
| Priority date | — |
| Expiry date | Sep 3, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D51/002
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The neck opening of a filled plastic bottle is sealed by a sealing unit ultrasonically welded to the top of the neck. The sealing unit can be a one-piece member having an upwardly projecting hollow portion arranged to be broken off to provide an opening for dispensing the contents of the bottle. Alternatively, the sealing unit can be composed of an inner cap, an outer cap and a sealing disc interposed between the caps, this unit being arranged to be pierced by a cannula for withdrawing the contents of the bottle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.