Method of manufacturing packaging container
US4848063A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Aug 2, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B41/16
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for making parallelepiped or brick-shaped containers of greater mechanical strength and better appearance, avoiding any mismatching of the printed patterns due to displaced joints in the middle of the side of the container walls. A longitudinal seal is positioned at the corners rather than on the face of the side walls, thus leaving the side walls without joints or splices. A packaging material web taped coated with thermoplastic material and provided with folding lines is twisted when passing through two bending rollers and one slack-absorbing roller and is converted into a cylindrical shaped and then sealed at the overlapping side edges. The cylindrical container is then filled with a liquid through a filler pipe and sealed at predetermined intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.