(19)

(11)

EP 4 572 952 A1

(12)

(43) Date of publication: 25.06.2025 Bulletin 2025/26 (21) Application number: 23768937.7 (22) Date of filing: 16.08.2023

(51) International Patent Classification (IPC):  B32B 1/00(2024.01) B32B 5/06(2006.01) B32B 5/26(2006.01) B32B 7/09(2019.01) B32B 27/12(2006.01) B32B 27/28(2006.01) B32B 27/36(2006.01) B32B 27/40(2006.01) B32B 5/02(2006.01) B32B 5/12(2006.01) B32B 7/05(2019.01) B32B 7/12(2006.01) B32B 27/20(2006.01) B32B 27/30(2006.01) B32B 27/38(2006.01) B32B 27/42(2006.01) (52) Cooperative Patent Classification (CPC): B32B 1/00; B32B 5/022; B32B 5/024; B32B 5/026; B32B 5/028; B32B 5/06; B32B 5/12; B32B 5/26; B32B 7/05; B32B 7/09; B32B 7/12; B32B 27/12; B32B 27/20; B32B 27/281; B32B 27/283; B32B 27/308; B32B 27/36; B32B 27/38; B32B 27/40; B32B 27/42; B32B 2250/42; B32B 2255/02; B32B 2255/26; B32B 2260/021; B32B 2260/046; B32B 2262/101; B32B 2262/106; B32B 2262/108; B32B 2262/065; B32B 2262/0269; B32B 2262/0276; B32B 2270/00; B32B 2307/30; B32B 2307/718; B32B 2307/732; B32B 2307/734; B32B 2307/738; B32B 2605/003 (86) International application number: PCT/IB2023/058222 (87) International publication number: WO 2024/038387 (22.02.2024 Gazette 2024/08)

(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: 19.08.2022 IT 202200017424 (71) Applicants: Delta-Tech S.p.A 55011 Lucca (IT) Delta Preg S.p.A. Con Unico Socio 64016 Sant'Egidio Alla Vibrata (TE) (IT)	(72) Inventors: NIERI, Antonio 55011 Altopascio (LU) (IT) NUCARA, Luca 55011 Altopascio (LU) (IT) GOTO, Masateru 55011 Altopascio (LU) (IT) DEL DEBBIO, Nicola 55011 Altopascio (LU) (IT) PAGANO, Giuseppe 55011 Altopascio (LU) (IT) SERRONI, Marzia 64016 Sant'Egidio Alla Vibrata (TE) (IT) (74) Representative: Studio Torta S.p.A.  Via Viotti, 9 10121 Torino 10121 Torino (IT)