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(11)

EP 3 631 093 A1

(12)

(43) Date of publication: 08.04.2020 Bulletin 2020/15 (21) Application number: 18725793.6 (22) Date of filing: 09.05.2018

(51) International Patent Classification (IPC):  E01F 7/04(2006.01) E04H 17/10(2006.01) E01F 15/06(2006.01) (86) International application number: PCT/EP2018/062102 (87) International publication number: WO 2018/215216 (29.11.2018 Gazette 2018/48)

(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: 24.05.2017 EP 17172793 (71) Applicant: NV Bekaert SA 8550 Zwevegem West Vlaanderen (BE)	(72) Inventors: CASTRO FRESNO, Daniel 39005 Santander (Cantabria) (ES) BLANCO FERNANDEZ, Elena 39005 Santander (Cantabria) (ES) CASTANON - JANO, Laura 39005 Santander (Cantabria) (ES) ALONSO - ESTEBANEZ, Alejandro 39005 Santander (Cantabria) (ES) (74) Representative: Zhang, Li  NV Bekaert SA IP Department - PC6030 Bekaertstraat 2 8550 Zwevegem 8550 Zwevegem (BE)