Method and apparatus for waste paper treatment
US5271805A · kind A · utility
10Cited by
5References
21Claims
0Family size
Inventors
Key dates
| Filing date | Mar 20, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Mar 20, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for reclaiming cellulosic fibers from a bale containing waste papers, in which the bale is positioned in a treatment enclosure, and the enclosure is placed under a vacuum. A treating fluid is drawn into the enclosure, which penetrates the bale interior spaces, and produces a preferential swelling of uncontaminated cellulosic fibers. After the treating fluid is withdrawn from the enclosure, a slurrying fluid is passed through the bale contents, to form a fiber-fluid suspension slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.