(19)

(11)

EP 1 853 760 A1

(12)

(43) Date of publication: 14.11.2007 Bulletin 2007/46 (21) Application number: 06716944.1 (22) Date of filing: 27.02.2006

(51) International Patent Classification (IPC):  D21F 1/36(2006.01) D21F 9/00(2006.01) (86) International application number: PCT/SE2006/000256 (87) International publication number: WO 2006/091165 (31.08.2006 Gazette 2006/35)

(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 NL PL PT RO SE SI SK TR (30) Priority: 28.02.2005 SE 0500447 (71) Applicant: STFI-Packforsk AB 114 86 Stockholm (SE)	(72) Inventors: NORMAN, Bo S-130 38 Runmarö (SE) HERMANSSON, Lennart S-183 62 Täby (SE) (74) Representative: Nilsson, Brita Linnea et al Zacco Sweden AB Patent Department Sveavägen 151 104 35 Stockholm 104 35 Stockholm (SE)