Method for dewatering a sheet of cellulose material using hot air caused to flow therethrough by means of a high vacuum, device therefor and resulting material
US5974691A · kind A · utility
26Cited by
6References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 19, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Sep 19, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F5/182
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for drying a cellulose web, in particular a moist paper web evincing a dry-state specific surface weight of between 10 and 80 g/m.sup.2 and initially a solids content between 8 and 30% approximately, and including supporting the web on a permeable conveying fabric and having a high-speed flow of hot air pass through the web, is characterized in that the flow of air is generated by a relative negative pressure of 100 to 500 mbars generated underneath the fabric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.