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(11)

EP 4 562 236 A1

(12)

(43) Date of publication: 04.06.2025 Bulletin 2025/23 (21) Application number: 23748495.1 (22) Date of filing: 25.07.2023

(51) International Patent Classification (IPC):  D04H 1/4209(2012.01) E04B 1/86(2006.01) D04H 1/58(2012.01) (52) Cooperative Patent Classification (CPC): D04H 1/4209; D04H 1/58; E04B 1/86 (86) International application number: PCT/EP2023/070652 (87) International publication number: WO 2024/023125 (01.02.2024 Gazette 2024/05)

(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: 25.07.2022 EP 22186800 (71) Applicant: ROCKWOOL A/S 2640 Hedehusene (DK)	(72) Inventors: GHIJZEN, Cornelus Johannes Maria 6114 MZ Susteren (NL) BAETS, Martinus Adriana 6071 AW Swalmen (NL) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)