Methods of adding expansion material to flexible containers
US10640247B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2018 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Jan 24, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D75/5811
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Methods of opening and adding expansion materials to containers made from flexible materials. The methods involve forming a partially completed container blank that may have four layers of flexible materials. The partially completed container blank may be opened by separating a portion of the first layer from a portion of the second layer by bending portions of the second, third, and fourth layers toward a first direction; and dosing the partially completed container blank, by adding an expansion material out of a dispenser and into a space disposed between a portion of the first layer and a portion of the second layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.