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(11)

EP 4 404 725 A1

(12)

(43) Date of publication: 31.07.2024 Bulletin 2024/31 (21) Application number: 21798431.9 (22) Date of filing: 21.09.2021

(51) International Patent Classification (IPC):  A01C 3/02(2006.01) B65D 90/42(2006.01) B65D 88/34(2006.01) B01D 53/88(2006.01) (52) Cooperative Patent Classification (CPC): A01C 3/028; B01D 2257/406; B01D 2258/02; B01D 2257/7025; B01D 2257/402; B01D 2257/90; B01D 2255/802; B01D 2255/9202; B01D 2255/20707; B01D 2255/20715; B01D 2255/2092; B01D 2255/30; B01D 2255/50; B01D 53/885; B01D 53/8668; B01D 53/8634; B01D 53/8625; B01D 2255/9205; B01D 2259/804; B01D 2259/802; C02F 2303/02; C02F 2103/22; C02F 3/28; C02F 3/301; Y02E 50/30 (86) International application number: PCT/IB2021/000614 (87) International publication number: WO 2023/047147 (30.03.2023 Gazette 2023/13)

(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 (71) Applicant: IGNASI CLOTET S.L.U. 25230 Mollerussa (ES)	(72) Inventors: CLOS PIJUÁN, Joan 25230 Mollerussa (ES) CABA MUNTADA, Joan 25230 Mollerussa (ES) (74) Representative: Curell Suñol S.L.P.  Muntaner 240, 4º 2ª 08021 Barcelona 08021 Barcelona (ES)