(19)

(11)

EP 2 814 989 A1

(12)

(43) Date of publication: 24.12.2014 Bulletin 2014/52 (21) Application number: 13702066.5 (22) Date of filing: 04.02.2013

(51) International Patent Classification (IPC):  C21D 1/70(2006.01) C21D 9/573(2006.01) F27D 9/00(2006.01) C21D 8/12(2006.01) F27B 9/30(2006.01) F27D 17/00(2006.01) (86) International application number: PCT/EP2013/052120 (87) International publication number: WO 2013/120714 (22.08.2013 Gazette 2013/34)

(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 (30) Priority: 13.02.2012 EP 12290051 (71) Applicant: Solaronics S.A. 59280 Armentières (FR)	(72) Inventors: LENOIR, Patrick F-59650 Villeneuve d'Ascq (FR) EVEN, Nicolas F-59116 Houplines (FR) (74) Representative: Messely, Marc  NV Bekaert SA D.I.E. Bekaertstraat 2 8550 Zwevegem 8550 Zwevegem (BE)