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(11)

EP 1 940 331 A1

(12)

(43) Date of publication: 09.07.2008 Bulletin 2008/28 (21) Application number: 06814170.4 (22) Date of filing: 06.09.2006

(51) International Patent Classification (IPC):  A61F 13/15(2006.01) A61F 13/56(2006.01) A61F 13/58(2006.01) B32B 5/04(2006.01) (86) International application number: PCT/US2006/034572 (87) International publication number: WO 2007/032965 (22.03.2007 Gazette 2007/12)

(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 NL PL PT RO SE SI SK TR (30) Priority: 12.09.2005 EP 05019777 (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventors: DAHM, Axel J.V. 41452 Neuss (DE) TUSCHY, Joerg O.P. 41452 Neuss (DE) (74) Representative: Wilhelm, Stefan et al 3M Deutschland GmbH Office of Intellectual Property Counsel Carl-Schurz-Strasse 1 D-41453 Neuss D-41453 Neuss (DE)