(19)

(11)

EP 2 089 188 A1

(12)

(43) Date of publication: 19.08.2009 Bulletin 2009/34 (21) Application number: 07842233.4 (22) Date of filing: 11.09.2007

(51) International Patent Classification (IPC):  B24D 9/08(2006.01) A44B 18/00(2006.01) (86) International application number: PCT/US2007/078131 (87) International publication number: WO 2008/033816 (20.03.2008 Gazette 2008/12)

(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 (30) Priority: 11.09.2006 US 825220 P (71) Applicant: 3M Innovative Properties Company St. Paul MN 55133-3427 (US)	(72) Inventors: CHESLEY, Jason A. Saint Paul, Minnesota 55133-3427 (US) WELYGAN, Dennis G. Saint Paul, Minnesota 55133-3427 (US) ANNEN, Michael J. Saint Paul, Minnesota 55133-3427 (US) (74) Representative: Voortmans, Gilbert J.L.  3M Europe S.A., Hermeslaan 7 1831 Diegem 1831 Diegem (BE)