Selectively tearable stock material for a dunnage conversion machine
US7815989B2 · kind B2 · utility
9Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2006 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Oct 16, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/15
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A stock material (16) for use with a dunnage conversion machine (14) includes at least one ply of sheet material having spaced along the length thereof a plurality of transverse rows (22) of weakened areas (24). The weakened areas (24), which can be formed by perforations, for example, have a reduced strength relative to adjacent portions of the sheet material. Each row (22) of weakened areas (24) has at least one parameter that varies along the row (22). The strength of the stock material at the row (22), in response to a force applied across the row (22), varies across the stock material (16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.