(19)

(11)

EP 4 041 645 A1

(12)

(43) Date of publication: 17.08.2022 Bulletin 2022/33 (21) Application number: 20874349.2 (22) Date of filing: 09.10.2020

(51) International Patent Classification (IPC):  B65D 5/50(2006.01) (52) Cooperative Patent Classification (CPC): B65D 81/058; B65D 5/5069 (86) International application number: PCT/IB2020/059508 (87) International publication number: WO 2021/070133 (15.04.2021 Gazette 2021/15)

(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: 10.10.2019 SE 1951151 (71) Applicant: Stora Enso Oyj 00101 Helsinki (FI)	(72) Inventor: MAGNUSSON, Pär 51131 Örby (SE) (74) Representative: Steinrud, Henrik  Stora Enso AB Group Intellectual Property Box 9090 65009 Karlstad 65009 Karlstad (SE)