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(11)

EP 3 387 187 A1

(12)

(43) Date of publication: 17.10.2018 Bulletin 2018/42 (21) Application number: 16873463.0 (22) Date of filing: 06.12.2016

(51) International Patent Classification (IPC):  D21C 7/14(2006.01) D21C 3/24(2006.01) (86) International application number: PCT/SE2016/051222 (87) International publication number: WO 2017/099654 (15.06.2017 Gazette 2017/24)

(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: MA MD (30) Priority: 09.12.2015 SE 1551616 (71) Applicant: Valmet AB 851 94 Sundsvall (SE)	(72) Inventor: SAETHERÅSEN, Jonas SE-663 42 Hammarö (SE) (74) Representative: Becker Kurig Straus  Patentanwälte Bavariastrasse 7 80336 München 80336 München (DE)