(19)

(11)

EP 3 847 110 A1

(12)

(43) Date of publication: 14.07.2021 Bulletin 2021/28 (21) Application number: 19857359.4 (22) Date of filing: 02.09.2019

(51) International Patent Classification (IPC):  B65D 77/04(2006.01) B65D 85/72(2006.01) B65D 81/38(2006.01) (86) International application number: PCT/IB2019/057376 (87) International publication number: WO 2020/049435 (12.03.2020 Gazette 2020/11)

(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: 05.09.2018 SE 1851057 (71) Applicant: Stora Enso Oyj 00101 Helsinki (FI)	(72) Inventor: HONKAVAARA, Outi 15100 Lahti (FI) (74) Representative: Steinrud, Henrik  Stora Enso AB Group Intellectual Property Box 9090 65009 Karlstad 65009 Karlstad (SE)