(19)

(11)

EP 4 284 592 A1

(12)

(43) Date of publication: 06.12.2023 Bulletin 2023/49 (21) Application number: 22702528.5 (22) Date of filing: 27.01.2022

(51) International Patent Classification (IPC):  B24D 3/00(2006.01) B24D 18/00(2006.01) B24D 3/28(2006.01) (52) Cooperative Patent Classification (CPC): B24D 3/007; B24D 3/28; B24D 18/0072 (86) International application number: PCT/IB2022/050724 (87) International publication number: WO 2022/162580 (04.08.2022 Gazette 2022/31)

(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: KH MA MD TN (30) Priority: 01.02.2021 US 202163144162 P (71) Applicant: 3M Innovative Properties Company Saint Paul, Minnesota 55133-3427 (US)	(72) Inventors: BAPTISTA, Carlos A. CEP 13001-970 Sumaré, São Paulo (BR) NERY, Marcos R. CEP 13001-970 Sumaré, São Paulo (BR) (74) Representative: De Clercq & Partners  Edgard Gevaertdreef 10a 9830 Sint-Martens-Latem 9830 Sint-Martens-Latem (BE)