Processes and devices for the disintegration of cellulose materials
US4443296A · kind A · utility
6Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1980 |
| Grant date | Apr 17, 1984 |
| Priority date | — |
| Expiry date | Aug 25, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21B1/345
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process is provided for the removal from paper pulp of impurities, the pulp being contained in a pulping machine. Some of the pulp is periodically transferred into an enclosed chamber annexed to the pulping machine, the chamber having a volume which is small compared to the volume of the pulping machine. The pulp in the chamber is stirred and separated by a rotor, and fibre suspension is returned to the pulping machine, dilution water being introduced into this chamber. The chamber is emptied and impurities thereafter discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.