(19)

(11)

EP 3 924 096 A1

(12)

(43) Date of publication: 22.12.2021 Bulletin 2021/51 (21) Application number: 20713089.9 (22) Date of filing: 13.02.2020

(51) International Patent Classification (IPC):  B01F 13/10(2006.01) (52) Cooperative Patent Classification (CPC): B01F 15/0243; B01F 13/1058 (86) International application number: PCT/IB2020/051186 (87) International publication number: WO 2020/165822 (20.08.2020 Gazette 2020/34)

(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: 14.02.2019 IT 201900002165 (71) Applicant: Alfa S.r.l. 40124 Bologna (BO) (IT)	(72) Inventors: ROSSETTI, Edoardo 40012 Calderara di Reno (BO) (IT) ROSSETTI, Marco 40012 Calderara di Reno (BO) (IT) (74) Representative: Provvisionato, Paolo  Provvisionato & Co S.r.l. Piazza di Porta Mascarella 7 40126 Bologna 40126 Bologna (IT)