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(11)

EP 2 572 061 A1

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(43) Date of publication: 27.03.2013 Bulletin 2013/13 (21) Application number: 11783143.8 (22) Date of filing: 23.05.2011

(51) International Patent Classification (IPC):  E04D 13/16(2006.01) E04B 1/76(2006.01) E04D 12/00(2006.01) E04B 7/00(2006.01) (86) International application number: PCT/FI2011/050463 (87) International publication number: WO 2011/144819 (24.11.2011 Gazette 2011/47)

(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: 21.05.2010 FI 20105564 (71) Applicant: Saint-Gobain Rakennustuotteet OY 05801 Hyvinkää (FI)	(72) Inventors: MÄKELÄ, Petri FI-33580 Tampere (FI) JOKINEN, Jussi FI-33720 Tampere (FI) (74) Representative: Galdeano, Sophie Marie et al Saint-Gobain Recherche Département Proprété Industrielle 39, quai Lucien Lefranc 93300 Aubervilliers 93300 Aubervilliers (FR)