Method and device for controlling the moisture or coating quantity profile in a paper web
US7249424B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2001 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Nov 22, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21G7/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The narrow-scale moisture profile of a paper web is controlled by profiling nozzles (11) of a profiling device (10) which cover part of the width of the web and desired variations of the moisture profile are corrected by the profiling nozzles (11). Coating quantity profile of a paper web may also be controlled. The narrow-scale coating quantity profile is controlled by profiling nozzles (11) of a profiling device (10) which cover part of the width of the web and desired variations of the coating quantity profile are corrected by the profiling nozzles (11). The device (10) for controlling the moisture profile or the coating quantity profile of a paper web has profiling nozzles (11) for controlling narrow-scale moisture profile variation, which cover a desired part of the width of the web, to correct desired variations occurring in the profile in the width direction of the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.