(19)

(11)

EP 3 137 236 A1

(12)

(43) Date of publication: 08.03.2017 Bulletin 2017/10 (21) Application number: 15718161.1 (22) Date of filing: 07.04.2015

(51) International Patent Classification (IPC):  B21C 1/14(2006.01) (86) International application number: PCT/EP2015/057492 (87) International publication number: WO 2015/165695 (05.11.2015 Gazette 2015/44)

(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: MA (30) Priority: 29.04.2014 EP 14166322 (71) Applicant: NV Bekaert SA 8550 Zwevegem (BE)	(72) Inventors: VEREECKEN, Erwin B-9270 Kalken (BE) VAN HOECKE, Hendrik B-8400 Oostende (BE) (74) Representative: Seynhaeve, Geert Filiep  NV Bekaert SA D.I.E. Bekaertstraat 2 8550 Zwevegem 8550 Zwevegem (BE)