(19)

(11)

EP 4 189 147 A1

(12)

(43) Date of publication: 07.06.2023 Bulletin 2023/23 (21) Application number: 21752736.5 (22) Date of filing: 25.06.2021

(51) International Patent Classification (IPC):  C25D 11/08(2006.01) C25D 11/24(2006.01) C25D 11/22(2006.01) C25D 11/18(2006.01) (52) Cooperative Patent Classification (CPC): C25D 11/22; C25D 11/246; C25D 11/08; C25D 11/18 (86) International application number: PCT/IB2021/055654 (87) International publication number: WO 2022/023836 (03.02.2022 Gazette 2022/05)

(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: 29.07.2020 PL 43483920 (71) Applicant: Canpack S.A. 30-302 Kraków (PL)	(72) Inventor: WODKA, Dawid 30-611 Kraków (PL) (74) Representative: Krekora, Magdalena  ul. Gorna 95 PL-32-091 Michalowice PL-32-091 Michalowice (PL)