(19)

(11)

EP 4 504 616 A1

(12)

(43) Date of publication: 12.02.2025 Bulletin 2025/07 (21) Application number: 23717504.7 (22) Date of filing: 05.04.2023

(51) International Patent Classification (IPC):  B65D 77/22(2006.01) B65D 65/46(2006.01) (52) Cooperative Patent Classification (CPC): B65D 77/225; B65D 65/466 (86) International application number: PCT/EP2023/058971 (87) International publication number: WO 2023/194452 (12.10.2023 Gazette 2023/41)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 08.04.2022 EP 22167471 (71) Applicant: B&T Entwicklungs- und Vermarktungsgesellschaft mbH 22297 Hamburg (DE)	(72) Inventors: BALKAU, Werner 8762 Glarus-Süd / Schwändi (CH) KRONAWITTLEITHNER, Kurt 8810 Horgen (CH) (74) Representative: Frei Patent Attorneys  Frei Patentanwaltsbüro AG Hagenholzstrasse 85 8050 Zürich 8050 Zürich (CH)