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(11)

EP 2 720 814 A1

(12)

(43) Date of publication: 23.04.2014 Bulletin 2014/17 (21) Application number: 11729892.7 (22) Date of filing: 15.06.2011

(51) International Patent Classification (IPC):  B21F 23/00(2006.01) B21G 3/20(2006.01) B21G 3/12(2006.01) (86) International application number: PCT/DK2011/050216 (87) International publication number: WO 2012/171528 (20.12.2012 Gazette 2012/51)

(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 (71) Applicant: ENKOTEC A/S 8660 Skanderborg (DK)	(72) Inventors: CARLSEN, Jens DK-8660 Skanderborg (DK) JENSEN, Torben Juul DK-8660 Skanderborg (DK) (74) Representative: Plougmann & Vingtoft A/S  Rued Langgaards Vej 8 2300 Copenhagen S 2300 Copenhagen S (DK)