(19)

(11)

EP 4 337 551 A1

(12)

(43) Date of publication: 20.03.2024 Bulletin 2024/12 (21) Application number: 22806929.0 (22) Date of filing: 03.05.2022

(51) International Patent Classification (IPC):  B65D 5/52(2006.01) B65D 5/50(2006.01) (52) Cooperative Patent Classification (CPC): B65D 5/52; B65D 5/5445; B65D 5/5035; B65D 77/042; B65D 5/563; B65D 5/4608; B65D 5/40; B65D 5/106 (86) International application number: PCT/IB2022/054071 (87) International publication number: WO 2022/238813 (17.11.2022 Gazette 2022/46)

(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: 10.05.2021 SE 2150591 (71) Applicant: Stora Enso Oyj 00101 Helsinki (FI)	(72) Inventor: VETTENRANTA, Miia 17130 Vesivehmaa (FI) (74) Representative: Steinrud, Henrik  Stora Enso AB Group Intellectual Property Box 9090 65009 Karlstad 65009 Karlstad (SE)