Method of delivering a pigment dispersion and retention aid to a papermaking process
US9200408B2 · kind B2 · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2013 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Nov 5, 2033 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/005
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The disclosure is directed toward methods for delivering a pigment dispersion and an inverted retention aid emulsion to a papermaking process. The method comprises injecting the pigment dispersion and the inverted retention aid emulsion into a process line of the papermaking process. The pigment dispersion comprises titanium dioxide, and the retention aid may comprise an anionic flocculant. The process line is located downstream from a screen and upstream from a headbox. The methods may incorporate the use of one or several nozzle devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.