(19)

(11)

EP 3 419 785 A1

(12)

(43) Date of publication: 02.01.2019 Bulletin 2019/01 (21) Application number: 17757044.7 (22) Date of filing: 21.02.2017

(51) International Patent Classification (IPC):  B24B 41/00(2006.01) B24D 5/16(2006.01) B24D 5/06(2006.01) B24D 7/06(2006.01) (86) International application number: PCT/US2017/018623 (87) International publication number: WO 2017/147035 (31.08.2017 Gazette 2017/35)

(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 Designated Validation States: MA MD (30) Priority: 26.02.2016 US 201662300476 P (71) Applicant: 3M Innovative Properties Company St. Paul, MN 55133-3427 (US)	(72) Inventors: RIFAUT, Jean-Luc 1831 Diegem (BE) CHARLOTTEAU, Jonathan 1831 Diegem (BE) (74) Representative: De Clercq & Partners  Edgard Gevaertdreef 10a 9830 Sint-Martens-Latem 9830 Sint-Martens-Latem (BE)