Method of making and filling a corrugated carton
US4461137A · kind A · utility
Inventor
Key dates
| Filing date | Jun 1, 1982 |
| Grant date | Jul 24, 1984 |
| Priority date | — |
| Expiry date | Jun 1, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2120/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A corrugated container and the method of forming the container saves paper. The method of forming the container includes gluing backing webs of paper to each side of a corrugated web, resulting in a composite web of three layer thickness. One of the backing layers is wider than the other backing layers, defining single layer strips on each edge of the multiple layer central section. Longitudinal fold lines are placed in the multiple and single layer strips. The composite web is sheared into sheets, with the sheet being folded along the fold lines into a container. The fold lines are placed to position the single layer portions on the upper sidewalls and top of the container, where less strength is required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.