Assembly system for container flexible end closures
US4155439A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1977 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Mar 11, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2251/0093
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A system for assembling flexible end closures for containers, the closure itself including a peelable sealing membrane, with a folded pull tab, and a plastic overcap separably combined as a single unit for application to the container. Apparatus cuts the individual sealing membranes from a continuous web for deposit thereof on individual holders which vacuum retain the membranes during movement through stations which fold an integral pull tab in overlying relation to each membrane for subsequent reception within an associated overcap applied to the holder along the path of movement thereof, the combined membrane and overcap ultimately being discharged for later application to a container as a closure therefor. A central manifold controls air flow to and away from the individual holders so as to selectively retain and discharge the closure forming membrane and overcap components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.