(19)

(11)

EP 3 965 596 A1

(12)

(43) Date of publication: 16.03.2022 Bulletin 2022/11 (21) Application number: 20723867.6 (22) Date of filing: 07.05.2020

(51) International Patent Classification (IPC):  A24B 15/12(2006.01) A24B 15/14(2006.01) (52) Cooperative Patent Classification (CPC): A24B 15/12 (86) International application number: PCT/EP2020/062779 (87) International publication number: WO 2020/225388 (12.11.2020 Gazette 2020/46)

(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: 07.05.2019 FR 1904782 (71) Applicant: SWM Luxembourg 5326 Contern (LU)	(72) Inventor: RIGOULAY, Christophe 5326 Luxembourg (LU) (74) Representative: Plasseraud IP  66, rue de la Chaussée d'Antin 75440 Paris Cedex 09 75440 Paris Cedex 09 (FR)