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(11)

EP 4 441 301 A1

(12)

(43) Date of publication: 09.10.2024 Bulletin 2024/41 (21) Application number: 22830434.1 (22) Date of filing: 02.12.2022

(51) International Patent Classification (IPC):  E03F 1/00(2006.01) E03F 5/04(2006.01) E03F 5/14(2006.01) E03F 5/02(2006.01) E03F 5/10(2006.01) (52) Cooperative Patent Classification (CPC): E03F 1/002; E03F 5/02; E03F 5/0404; E03F 5/10; E03F 5/14 (86) International application number: PCT/EP2022/084290 (87) International publication number: WO 2023/099768 (08.06.2023 Gazette 2023/23)

(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: 03.12.2021 EP 21212346 03.12.2021 EP 21212348 (71) Applicant: ROCKWOOL A/S 2640 Hedehusene (DK)	(72) Inventors: THEUNISSEN, Jack Elisabeth Marie 2640 Hedehusene (DK) SEVRIENS, Dave M. J. 2640 Hedehusene (DK) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)