Method and device for preparation and primary separation of paper pulp
US4818339A · kind A · utility
19Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1986 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Jul 25, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method and device for preparation and primary separation of paper pulp in which the initial disintegration is produced in a primary pulper 1 of known type, the contents of the pulper, after this separation is discharged directly and discontinuously into a large-sized vat where it is stirred by an agitator with longitudinal shaft equipped with spiral arms, and from there poured discontinuously into a separator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.