(19)

(11)

EP 4 222 311 A1

(12)

(43) Date of publication: 09.08.2023 Bulletin 2023/32 (21) Application number: 21791489.4 (22) Date of filing: 01.10.2021

(51) International Patent Classification (IPC):  D21H 11/18(2006.01) D21J 1/00(2006.01) B27N 3/04(2006.01) (52) Cooperative Patent Classification (CPC): D21H 11/18; B27N 3/04; B27N 5/00; B27N 7/005; B27N 1/00; B27N 3/007; D21B 1/12; D21B 1/021 (86) International application number: PCT/SE2021/050970 (87) International publication number: WO 2022/071871 (07.04.2022 Gazette 2022/14)

(84) Designated Contracting States: 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 States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 02.10.2020 SE 2051168 (71) Applicant: Holmen AB 114 84 Stockholm (SE)	(72) Inventors: ANDERSSON, Jan 603 65 Norrköping (SE) WIKSAND, Tommy 603 79 Norrköping (SE) JONSSON, Jonas 616 33 Åby (SE) SANDBERG, Christer 617 90 Skärblacka (SE) (74) Representative: Zacco Sweden AB  P.O. Box 5581 Löjtnantsgatan 21 114 85 Stockholm 114 85 Stockholm (SE)