System for overall control of different transverse profiles in a paper web manufactured in a board of paper machine and/or treated in a finishing machine
US5649448A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1995 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2553/82
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for controlling transverse profiles of a web in a web-manufacturing machine, such as a board or paper machine, and/or being treated in a finishing machine. At least one of a transverse caliper, grammage and moisture profiles of the web is measured either directly or indirectly. Actuators acting upon these profiles are regulated by measurement signals. In order to optimize the quality of the web to be produced, the reel formation, and the runnability of the machine, the transverse tension profile of the web to be manufactured and/or treated is measured. Based on the measurement of the transverse tension profile, set profiles are formed which control the actuator(s) of the profile regulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.