(19)

(11)

EP 4 568 489 A1

(12)

(43) Date of publication: 18.06.2025 Bulletin 2025/25 (21) Application number: 23852066.2 (22) Date of filing: 10.08.2023

(51) International Patent Classification (IPC):  A22B 3/00(2006.01) (52) Cooperative Patent Classification (CPC): A22B 3/005 (86) International application number: PCT/FI2023/050462 (87) International publication number: WO 2024/033573 (15.02.2024 Gazette 2024/07)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 11.08.2022 FI 20225716 (71) Applicant: Honkajoki Oy 38950 Honkajoki (FI)	(72) Inventors: KENOLA, Keijo 38950 Honkajoki (FI) VALKOSALO, Kari 38950 Honkajoki (FI) RÄIKKÖNEN, Arto 38950 Honkajoki (FI) BACKLUND, Lars-Johan 38950 Honkajoki (FI) EMET, Folke 38950 Honkajoki (FI) EMET, Tommy 38950 Honkajoki (FI) (74) Representative: Kolster Oy Ab  Salmisaarenaukio 1 P.O. Box 204 00181 Helsinki 00181 Helsinki (FI)