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(11)

EP 4 577 401 A1

(12)

(43) Date of publication: 02.07.2025 Bulletin 2025/27 (21) Application number: 23762180.0 (22) Date of filing: 23.08.2023

(51) International Patent Classification (IPC):  B32B 1/08(2006.01) B32B 5/12(2006.01) B32B 15/08(2006.01) B32B 27/08(2006.01) B32B 27/32(2006.01) B32B 27/40(2006.01) B32B 5/02(2006.01) B32B 5/26(2006.01) B32B 15/092(2006.01) B32B 27/12(2006.01) B32B 27/38(2006.01) (52) Cooperative Patent Classification (CPC): B32B 1/08; B32B 15/08; B32B 5/024; B32B 5/12; B32B 5/26; B32B 15/092; B32B 27/08; B32B 27/12; B32B 27/32; B32B 27/38; B32B 27/40; B32B 2262/101; B32B 2307/714; B32B 2307/7265; B32B 2597/00; B32B 15/18; F16L 58/1054; F16L 9/042; F16L 9/147 (86) International application number: PCT/EP2023/073152 (87) International publication number: WO 2024/042129 (29.02.2024 Gazette 2024/09)

(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: 23.08.2022 DE 102022121332 (71) Applicant: TDC International AG 6004 Luzern (CH)	(72) Inventors: GODBOUT, Patrick 6004 LUZERN (CH) WELKER, Ruirui 6004 LUZERN (CH) WELKER, Daniel 6004 LUZERN (CH) (74) Representative: Eisenführ Speiser  Patentanwälte Rechtsanwälte PartGmbB Stralauer Platz 34 10243 Berlin 10243 Berlin (DE)