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EP 4 409 070 A1

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(43) Date of publication: 07.08.2024 Bulletin 2024/32 (21) Application number: 22789233.8 (22) Date of filing: 27.09.2022

(51) International Patent Classification (IPC):  D21H 19/58(2006.01) D21H 19/82(2006.01) B65D 65/42(2006.01) D21H 27/10(2006.01) (52) Cooperative Patent Classification (CPC): D21H 19/822; D21H 27/10; D21H 19/58; B65D 65/42 (86) International application number: PCT/EP2022/076813 (87) International publication number: WO 2023/046985 (30.03.2023 Gazette 2023/13)

(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: 27.09.2021 EP 21199210 (71) Applicant: Billerud Aktiebolag (publ) 169 27 Solna (SE)	(72) Inventors: GILLGREN, Thomas 703 57 Örebro (SE) LARSSON, Johan 805 98 Gävle (SE) PROSPER, Wouter 714 93 Kopparberg (SE) (74) Representative: Kransell & Wennborg KB  P.O. Box 2096 403 12 Göteborg 403 12 Göteborg (SE)