Apparatus for the dewatering of a web of cellulosic matter or a web of material for the pasteboard or cardboard production
US5085737A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1990 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Jun 8, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F3/0281
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to apparatus for the dewatering of a web of cellulosic matter or a web of material for the pasteboard or cardboard production, having endless screen belts or the like circulating in opposite directions between which the web is made to pass for dewatering, the web being made to pass through at least one first dewatering zone with at least two screen belts or the like and thereupon to at least one further dewatering zone, in particular a compresion zone, with at least two screen belts. The invention is mainly characterized in that the web is made to pass at least largely unsupported from at least one dewatering zone serving as a pre-dewatering zone and in particular formed as a double screen belt press to at least one further dewatering zone, in particular to a compression zone in particular formed as a double screen belt press, preferably as a high-pressure press, one or a plurality of heating means, in particular means for applying a heating medium, conveniently one or a plurality of steam-blowing box(es), being provided behind the at least one first dewatering zone serving for pre-dewatering on the web or on the path of the web, in particular above it, one or…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.