Procedure for adding a filler into a pulp based on cellulose fibers
US6436232B1 · kind B1 · utility
36Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1997 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Feb 20, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/70
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a procedure for adding a filler into a pulp based on cellulose fibers, in which the pulp is fluidized and the filler is added into it. Preferably the pulp is stirred in the fluidized state while the filler is being added. The pulp is preferably at a medium consistency when the filler is being added. Preferably the filler added into the pulp is calcium hydroxide and the calcium carbonate is precipitated with carbon dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.