(19)

(11)

EP 2 531 643 A1

(12)

(43) Date of publication: 12.12.2012 Bulletin 2012/50 (21) Application number: 11702157.6 (22) Date of filing: 03.02.2011

(51) International Patent Classification (IPC):  D21C 9/00(2006.01) D21D 1/34(2006.01) D21D 1/20(2006.01) D21H 11/18(2006.01) (86) International application number: PCT/EP2011/000489 (87) International publication number: WO 2011/095335 (11.08.2011 Gazette 2011/32)

(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 (30) Priority: 04.02.2010 NO 20100188 (71) Applicant: Borregaard AS 1721 Sarpsborg (NO)	(72) Inventor: BACKA, Stefan, Ole N-1721 Sarpsborg (NO) (74) Representative: Ricker, Mathias  Wallinger Ricker Schlotter Tostmann Patent- und Rechtsanwälte Zweibrückenstrasse 5-7 80331 München 80331 München (DE)