Rotary carton closing and sealing apparatus
US3996724A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1975 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Oct 16, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S53/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Packaging apparatus for closing and sealing the open end of a carton of thermoplastic coated paperboard material or the like. A rotatable drum has a cylindrical wall that supports a plurality of carton closing and sealing units. During rotation of the drum, open ended cartons are successively picked-up at a carton receiving station and are carried by the drum to a carton delivery station. During the movement of the carton from the receiving to the delivery station, the open end of the carton is folded to a closed condition and the layers of the closed carton end are vibration welded together by one of the carton closing and sealing units. Each carton closing and sealing unit includes a pair of jaws movable between an open and closed position with respect to each other, a latching member for locking the jaws in their closed position, and a vibration welding device. When the jaws are in their open position, the open end of a carton can be received between the jaws, and subsequent closing of the jaws collapses the open end of the carton, with an anvil surface on one of the jaws being disposed to engage one outer surface of the layers of the closed carton end. The vibration welding dev…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.