System and process for detecting properties of travelling sheets in the cross direction
US4903528A · kind A · utility
56Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Sep 26, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21G9/0009
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
To determine measurements such as basis weight and caliper of a travelling sheet during production, the sheet is repeatedly traversed with a scanning sensor and, during each traverse, measurements are taken at a plurality of slice locations. Then, a series of reference locations are selected which are spaced apart in the machine direction along the sheet surface. Then, for selected slices, measurement values are estimated based upon actual measurements taken at locations on the selected slices which are not spaced in the machine direction at the same spacing as reference locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.