Machine and method for producing dunnage having an x-shaped cross-sectional profile
US11123943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2015 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Apr 3, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31D2205/0047
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dunnage conversion machine includes a bunching assembly that randomly crumples at least two plies of sheet stock material into modified plies having a relatively thicker three-dimensional shape, and a feeding assembly that advances and connects together longitudinally-extending portions of the modified plies to form a dunnage strip. A diverter minimizes overlap of and encourages separation of lateral edges of the modified plies from one another, and a severing assembly severs distinct dunnage products from the strip. An exemplary resultant dunnage product includes two or more plies of crumpled sheet material interconnected along a longitudinally-extending portion having interconnected overlapped portions of each of the plies and a longitudinally-extending line of connection. Each ply may extend laterally outwardly along randomly crumpled edge portions having a crumpled lateral width greater than a lateral width of the longitudinally-extending portion, the edge portions extending from the line of connection to opposed, laterally-extending free edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.