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EP 2 855 716 A1

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(43) Date of publication: 08.04.2015 Bulletin 2015/15 (21) Application number: 13723491.0 (22) Date of filing: 15.05.2013

(51) International Patent Classification (IPC):  C21D 1/767(2006.01) B05D 3/04(2006.01) F26B 13/00(2006.01) F27D 15/02(2006.01) C21D 8/02(2006.01) C21D 9/573(2006.01) B21B 45/02(2006.01) F27D 9/00(2006.01) C21D 9/46(2006.01) (86) International application number: PCT/EP2013/060063 (87) International publication number: WO 2013/178470 (05.12.2013 Gazette 2013/49)

(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: 30.05.2012 EP 12290177 (71) Applicant: Solaronics S.A. 59280 Armentières (FR)	(72) Inventors: LENOIR, Patrick F-59650 Villeneuve d'Ascq (FR) WILS, Anthony F-59130 Lambersart (FR) (74) Representative: Messely, Marc  NV Bekaert SA D.I.E. Bekaertstraat 2 8550 Zwevegem 8550 Zwevegem (BE)