(19)

(11)

EP 2 370 348 A2

(12)

(88) Date of publication A3: 26.08.2010 (43) Date of publication: 05.10.2011 Bulletin 2011/40 (21) Application number: 09836644.6 (22) Date of filing: 02.12.2009

(51) International Patent Classification (IPC):  B82B 3/00(2006.01) B82B 1/00(2006.01) (86) International application number: PCT/US2009/066302 (87) International publication number: WO 2010/077529 (08.07.2010 Gazette 2010/27)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 17.12.2008 US 138272 P (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventors: WANG, Ding Saint Paul, Minnesota 55133-3427 (US) PORQUE, Jerome, C. Bridgewater, New Jersey 08807 (US) (74) Representative: Vossius & Partner  Siebertstrasse 4 81675 München 81675 München (DE)