(19)

(11)

EP 4 263 934 A1

(12)

(43) Date of publication: 25.10.2023 Bulletin 2023/43 (21) Application number: 21859356.4 (22) Date of filing: 14.12.2021

(51) International Patent Classification (IPC):  D07B 5/00(2006.01) D07B 1/14(2006.01) (52) Cooperative Patent Classification (CPC): D07B 5/007; D07B 2201/2019; D07B 2201/2011; D07B 2201/2059; D07B 2201/2065; D07B 2205/306; D07B 2205/3071; D07B 2205/3092; D07B 2501/2023; D07B 1/0693; D07B 2501/2015; D07B 1/147; D07B 2201/2014; B21F 37/04; B21C 23/26   C-Sets: D07B 2205/3071, D07B 2801/18; D07B 2205/3092, D07B 2801/18; D07B 2201/2011, D07B 2801/10, D07B 2801/14; D07B 2201/2059, D07B 2801/12; D07B 2201/2065, D07B 2801/12; D07B 2205/306, D07B 2801/18; (86) International application number: PCT/EP2021/085721 (87) International publication number: WO 2022/129067 (23.06.2022 Gazette 2022/25)

(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: 17.12.2020 EP 20214792 (71) Applicant: NV Bekaert SA 8550 Zwevegem (BE)	(72) Inventors: VITKO, Stefan 920 28 Hlohovec (SK) FILO, Jozef 920 28 Hlohovec (SK) SUDY, Robert 920 28 Hlohovec (SK) SOBOTA, Lubos 920 28 Hlohovec (SK)