EP 2682521 A1 20140108 - Process and device for treating fiber webs
Title (en)
Process and device for treating fiber webs
Title (de)
Verfahren und Vorrichtung zur Behandlung von Faserbahnen
Title (fr)
Procédé et dispositif pour le traitement d'une feuille fibreuse
Publication
Application
Priority
EP 12174933 A 20120704
Abstract (en)
The invention relates to process for treating a fiber web, especially a board web, in which process fiber web is guided into a processing zone that is created in between a belt (21) and at least one cylinder or roll (14, 16) and/or in between two belts (22, 23), in which processing zone the fiber web (w) is treated, advantageously calendered, during a dwell time. In the process the fiber web is treated in the processing zone for a long dwell time for at least 200 ms and in moderate temperatures in the range of 60 - 180 ºC. The processing zone comprises at least three stages in any order: a short-treatement stage, a loading stage and a long-treatment stage. In the short-treatment stage the dwell time is less than 200 ms and the load is 0,01- 10 MPa. In the loading stage the dwell time is 1 €• 20 ms and the load is 0,1 €• 100 MPa. In the long-treatment stage the dwell time is more than 100 ms and the load is 0,01 €• 10 MPa. The invention also relates to a device for treating a fiber web.
IPC 8 full level
D21G 1/00 (2006.01)
CPC (source: EP)
D21G 1/0066 (2013.01)
Citation (applicant)
- WO 03064764 A1 20030807 - METSO PAPER INC [FI], et al
- WO 2006012856 A1 20060209 - WEBASTO AG FAHRZEUGTECHNIK [DE], et al
- WO 2007110472 A1 20071004 - METSO PAPER INC [FI], et al
- "Papermaking Science and Technology", 1999, FAPET OY, pages: 362
Citation (search report)
- [XDY] WO 2006125856 A1 20061130 - METSO PAPER INC [FI], et al
- [YA] WO 2006024695 A1 20060309 - METSO PAPER INC [FI], et al
- [YDA] WO 03064762 A1 20030807 - METSO PAPER INC [FI], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 12174933 A 20120704