EP 4230793 A1 20230823 - METHOD AND SYSTEM OF PRODUCING OF FIBER WEBS
Title (en)
METHOD AND SYSTEM OF PRODUCING OF FIBER WEBS
Title (de)
VERFAHREN UND SYSTEM ZUR HERSTELLUNG VON FASERBAHNEN
Title (fr)
PROCÉDÉ ET SYSTÈME DE PRODUCTION DE BANDES DE FIBRES
Publication
Application
Priority
FI 20225142 A 20220217
Abstract (en)
The invention relates to a method of producing of fiber webs, in which method pulp is fed the from a head box (10) to a forming section (20), in which water is removed from the pulp by water removal means and a fiber web is formed, in which water is further removed by pressing the fiber web in a press section (30), in which in a subsequent drying section (40) the fiber web is dried, in which the fiber web is reeled into a parent roll in a reel-up (80), in which the parent roll is unwound in an unwinder of a slitter-winder (90) and then slit into partial fiber webs in a slitter of the slitter-winder (90), which partial fiber webs are wound to customer rolls in a winder of the slitter winder (90), in which method the fiber web is trimmed before the reeling on the reel-up by at least one trim cutting device (100), in which trimming at least one trim strip is removed from at least one edge of the fiber web. The fiber web is trimmed by the cutting of the at least one trim strip to a fullwidth defined by total width of the customer rolls to be produced in the slitter-winder (90). The trim strip has a width of at least 300 mm. The invention also relates to a system of producing of fiber webs.
IPC 8 full level
CPC (source: EP FI)
B26D 3/00 (2013.01 - FI); B26D 5/00 (2013.01 - FI); B26D 7/00 (2013.01 - FI); B26D 7/1863 (2013.01 - FI); B26D 11/00 (2013.01 - FI); B65H 35/02 (2013.01 - FI); D21F 7/006 (2013.01 - EP FI); D21G 9/00 (2013.01 - FI); B26D 7/1863 (2013.01 - EP); B26F 3/004 (2013.01 - EP)
Citation (applicant)
- US 7166194 B2 20070123 - STRAUB KARLHEINZ [DE], et al
- WO 2009022053 A1 20090219 - METSO PAPER INC [FI], et al
- WO 2018236264 A1 20181227 - VALMET OY [SE]
- US 2002124701 A1 20020912 - CASPAR ROMAN C [CA], et al
- EP 3855373 A1 20210728 - HONEYWELL LTD [CA]
Citation (search report)
- [Y] US 2001025696 A1 20011004 - BOCK KARL JOSEF [DE], et al
- [Y] EP 3231936 A1 20171018 - VALMET TECHNOLOGIES OY [FI]
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4230793 A1 20230823; FI 131085 B1 20240917; FI 20225142 A1 20230818
DOCDB simple family (application)
EP 23151644 A 20230116; FI 20225142 A 20220217