(19)

(11)

EP 4 072 952 A1

(12)

(43) Date of publication: 19.10.2022 Bulletin 2022/42 (21) Application number: 20897817.1 (22) Date of filing: 03.12.2020

(51) International Patent Classification (IPC):  B65D 5/22(2006.01) B65D 5/00(2006.01) (52) Cooperative Patent Classification (CPC): B65D 5/0025 (86) International application number: PCT/IB2020/061442 (87) International publication number: WO 2021/116848 (17.06.2021 Gazette 2021/24)

(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: KH MA MD TN (30) Priority: 10.12.2019 SE 1951424 (71) Applicant: Stora Enso Oyj 00101 Helsinki (FI)	(72) Inventor: ÖBERG, Nathalie 511 62 Skene (SE) (74) Representative: Steinrud, Henrik  Stora Enso AB Group Intellectual Property Box 9090 65009 Karlstad 65009 Karlstad (SE)