(19)

(11)

EP 3 976 898 A1

(12)

(43) Date of publication: 06.04.2022 Bulletin 2022/14 (21) Application number: 20730411.4 (22) Date of filing: 31.05.2020

(51) International Patent Classification (IPC):  E04B 9/06(2006.01) E04B 9/10(2006.01) E04B 9/12(2006.01) (52) Cooperative Patent Classification (CPC): E04B 9/068; E04B 9/10; E04B 9/122; E04B 9/125 (86) International application number: PCT/EP2020/065104 (87) International publication number: WO 2020/245067 (10.12.2020 Gazette 2020/50)

(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: 03.06.2019 US 201962856217 P 21.04.2020 US 202016854184 (71) Applicant: Rockwool International A/S 2640 Hedehusene (DK)	(72) Inventor: JANKOVEC, Scott G. Elmhurst, Illinois 60126 (US) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)