On-line paper sheet strength determination method and device
US4936141A · kind A · utility
19Cited by
2References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1987 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Oct 6, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8663
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and device for determining the strength of a sheet material, such as paper, utilizing floc size and the variability of the local basis weight of the sheet. The force required to deflect the moving sheet out of a nominal position, the distance the sheet is deflected by said force and the average tension applied to the sheet may also be utilized in the above determination of sheet strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.