Method for paper processing
US7981250B2 · kind B2 · utility
1Cited by
31References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2006 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Feb 8, 2028 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/68
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
According to the present invention, a process is provided for making paper or board comprising forming a cellulosic suspension that may or may not comprise a filler, flocculating the cellulosic suspension, draining the cellulosic suspension on a screen to form a sheet, wherein the cellulosic suspension is flocculated using a flocculation system comprising the sequential or simultaneous addition of a siliceous material and an organic, cationic or anionic, dispersion micropolymer in a salt solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.