(19)

(11)

EP 2 934 794 A1

(12)

(43) Date of publication: 28.10.2015 Bulletin 2015/44 (21) Application number: 13815339.0 (22) Date of filing: 16.12.2013

(51) International Patent Classification (IPC):  B23B 7/06(2006.01) G09F 3/10(2006.01) G09F 3/00(2006.01) (86) International application number: PCT/US2013/075295 (87) International publication number: WO 2014/099731 (26.06.2014 Gazette 2014/26)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 20.12.2012 EP 12198599 (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventors: NGUYEN, Quoc-Hiep 41453 Neuss (DE) NGUYEN, Trung Kien 41453 Neuss (DE) NEUMANN, Bernd 41453 Neuss (DE) BUETTNER, Joern 41453 Neuss (DE) GRIEBENOW, Yolanda 41453 Neuss (DE) (74) Representative: Gabriel, Kiroubagaranne  3M Belgium B.V.B.A./S.P.R.L. Hermeslaan 7 1831 Diegem 1831 Diegem (BE)