Process for production of a fibrous pulp web
US9856603B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2016 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Oct 3, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F11/145
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a fibrous pulp web, in which a fibrous pulp suspension is dewatered in a Twin Wire Former to form a fibrous pulp web which is dried with a TAD dryer. A pre-dewatering device with a hood and suction roll is provided after the Twin Wire Former and before the TAD dryer. The fibrous pulp web is guided through the pre-dewatering device between exactly two machine cloths. The machine cloth between suction roll and the web is a porous felt, and the machine cloth between web and hood is a structured wire. A volume flux of hot drying fluid greater than 100 m3/(m2·min), preferably greater than 250 m3/(m2·min,) is drawn through the fibrous pulp web into the suction roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.