(19)

(11)

EP 3 380 667 A1

(12)

(43) Date of publication: 03.10.2018 Bulletin 2018/40 (21) Application number: 16868982.6 (22) Date of filing: 16.11.2016

(51) International Patent Classification (IPC):  D21C 9/147(2006.01) (86) International application number: PCT/SE2016/051128 (87) International publication number: WO 2017/091129 (01.06.2017 Gazette 2017/22)

(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: 27.11.2015 SE 1551539 (71) Applicant: VALMET AB 851 94 Sundsvall (SE)	(72) Inventor: DAHLLÖF, Håkan 653 49 Karlstad (SE)