Carton blank
US5632404A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 1996 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Jan 17, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2105/001
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A carton blank comprising a relatively rigid material having an inner surface, having a central body portion and opposite edge portions and wherein a relatively flexible material, preferably fluid impervious, having a central body portion and opposite edge portions has its central body portion secured to the central body portion of the relatively rigid material and the opposite edge portions of the relatively rigid material and the relatively flexible material are not secured to each other. In some instances strips of another relatively flexible material are secured to the opposite edge portions of the relatively flexible material but are not secured to the opposite edge portions of the reactively rigid material. In other instances, a plurality of spaced apart strips of a relatively flexible material are superposed over portions of a relatively rigid material and a plastic coating is applied to the exposed surfaces thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.