Systems and methods for providing improved dewatering performance in a papermaking machine
US8337666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Feb 12, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21G3/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A doctoring system is disclosed for a papermaking machine wherein the doctoring system includes a doctor blade and a fluid assist means. The doctor blade is coupled to a doctor blade holder, and is for cleaning a moving surface. The doctor blade holder is coupled to a doctor-back. The fluid assist means is for providing a fluid under positive pressure that is higher than atmospheric pressure and is directed in a direction generally along a direction of movement of the moving surface such that a negative pressure that is lower than atmospheric pressure develops in a negative pressure zone adjacent the moving surface and a following surface of the doctor blade during movement of the moving surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.