Package and automatic method of forming same
US4353196A · kind A · utility
Inventors
Key dates
| Filing date | Apr 30, 1980 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Apr 30, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/2056
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a method of automatically forming packages of materials or goods such as milk packages from flexible film and to the novel packages produced thereby. The roll stock film is passed over a forming shoulder to give it a tubular shape and the opposite edges are joined by a sealing bar to form a tubular portion. The milk pouches or other material to be packaged are then dropped into the tubular portion which has previously been laterally sealed across the bottom. The weight of the pouches draws the film down between a pair of reciprocating cutting and sealing jaws when they are opened until the pouches come to rest upon a pivotal support member. The jaws are then closed to form two lateral seals, i.e. one for that package and one for the next package, and a lateral cut separates the packages. The package thus formed may also have an upper handle portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.