(19)

(11)

EP 2 034 846 A1

(12)

(43) Date of publication: 18.03.2009 Bulletin 2009/12 (21) Application number: 07730811.2 (22) Date of filing: 05.06.2007

(51) International Patent Classification (IPC):  A23C 9/00(2006.01) A23C 9/123(2006.01) A23C 9/12(2006.01) A23C 13/16(2006.01) (86) International application number: PCT/FI2007/050324 (87) International publication number: WO 2007/141385 (13.12.2007 Gazette 2007/50)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 07.06.2006 FI 20065387 (71) Applicant: Valtion Teknillinen Tutkimuskeskus 02150 Espoo (FI)	(72) Inventors: AUTIO, Karin FI-02940 Espoo (FI) LILLE, Martina FI-01640 Vantaa (FI) MYLLÄRINEN, Päivi FI-00190 Helsinki (FI) (74) Representative: Boije-Backman, Solveig Magdalena  Kolster Oy Ab, Iso Roobertinkatu 23, P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)