(19)

(11)

EP 4 313 613 A1

(12)

(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 21718564.4 (22) Date of filing: 13.04.2021

(51) International Patent Classification (IPC):  B41M 5/50(2006.01) B31F 1/00(2006.01) B41M 5/52(2006.01) B32B 29/08(2006.01) (52) Cooperative Patent Classification (CPC): B41M 5/52; B41M 5/502; B41M 2205/42; B32B 29/08; B32B 29/02; B32B 2255/02; B32B 2255/26; B31F 5/04 (86) International application number: PCT/EP2021/059488 (87) International publication number: WO 2022/199858 (29.09.2022 Gazette 2022/39)

(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: 23.03.2021 EP 21164401 (71) Applicant: Sappi Ehingen GmbH 89584 Ehingen (DE)	(72) Inventor: LEX, Rainer 89584 Ehingen (DE) (74) Representative: Schmitz, Joseph  Isler & Pedrazzini AG Giesshübelstrasse 45 Postfach 1772 8027 Zürich 8027 Zürich (CH)