(19)

(11)

EP 4 798 438 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24723537.7 (22) Date of filing: 30.04.2024

(51) International Patent Classification (IPC):  B32B 5/12(2006.01) B32B 7/02(2019.01) B32B 27/32(2006.01) B32B 27/36(2006.01) B32B 5/26(2006.01) B32B 27/30(2006.01) B32B 27/34(2006.01) B32B 27/40(2006.01) (52) Cooperative Patent Classification (CPC): B32B 5/26; B32B 5/12; B32B 7/02; B32B 27/32; B32B 27/40; B32B 27/308; B32B 27/34; B32B 27/365; B32B 27/36; B32B 2250/04; B32B 2250/40; B32B 2250/42; B32B 2260/023; B32B 2260/046; B32B 2262/106; B32B 2262/0253; B32B 2262/0269; B32B 2262/101; B32B 2274/00; B32B 2307/536; B32B 2307/546; B32B 2307/56; B32B 2307/554; B32B 2307/718; B32B 2307/734; B32B 2307/746; B32B 2571/00 (86) International application number: PCT/EP2024/061966 (87) International publication number: WO 2025/087566 (01.05.2025 Gazette 2025/18)

(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: GE KH MA MD TN (30) Priority: 23.10.2023 IT 202300022146 (71) Applicant: Società per Azioni Fratelli Citterio 20842 Besana in Brianza (MB) (IT)	(72) Inventors: CITTERIO, Giorgio Celeste 20842 Besana in Brianza (MB) (IT) CITTERIO, Filippo 20842 Besana in Brianza (MB) (IT) (74) Representative: Murgitroyd & Company  165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)