(19)

(11)

EP 4 409 081 A1

(12)

(43) Date of publication: 07.08.2024 Bulletin 2024/32 (21) Application number: 22789235.3 (22) Date of filing: 28.09.2022

(51) International Patent Classification (IPC):  E04B 5/32(2006.01) E04C 2/06(2006.01) E04C 5/01(2006.01) E04B 5/43(2006.01) E04B 5/02(2006.01) E04C 5/07(2006.01) (52) Cooperative Patent Classification (CPC): E04B 5/32; E04B 5/43; E04C 5/012; E04C 5/07; E04C 2/06; E04C 2/50; E04C 5/073 (86) International application number: PCT/EP2022/076997 (87) International publication number: WO 2023/052434 (06.04.2023 Gazette 2023/14)

(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: 28.09.2021 EP 21250005 (71) Applicants: NV Bekaert SA 8550 Zwevegem (BE) CCL Stressing International Ltd Leeds LS11 5BP (GB)	(72) Inventors: THOOFT, Hendrik 9700 Welden (BE) HAYEK, Carol Leeds LS11 SBP (GB) (74) Representative: Serwas, Harry  NV Bekaert SA IPD - PC6030 Bekaertstraat 2 8550 Zwevegem 8550 Zwevegem (BE)