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(11)

EP 4 823 814 A2

(12)

(88) Date of publication A3: 25.09.2025 (43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24833853.5 (22) Date of filing: 13.12.2024

(51) International Patent Classification (IPC):  B27N 5/02(2006.01) B65D 1/44(2006.01) B29C 33/42(2006.01) B27N 3/04(2006.01) B27N 5/00(2006.01) B29C 43/02(2006.01) B31F 1/00(2006.01) B65D 1/34(2006.01) B27N 3/20(2006.01) B27N 3/00(2006.01) B27N 3/18(2006.01) B29C 43/00(2006.01) B31D 5/00(2017.01) B65D 65/46(2006.01) (52) Cooperative Patent Classification (CPC): B65D 1/34; B65D 1/44; B27N 5/02; B27N 5/00; B27N 3/04; B27N 3/203; B27N 3/18; B29C 33/42; B29C 43/003; B29C 43/006; B31B 50/592; B29C 2043/023; B29C 2043/025; B27N 3/007; B31B 50/10; B31B 50/142; B31B 50/16; B31B 50/741; B31B 50/88; B31B 2100/002; B31B 2110/35; B29C 43/021 (86) International application number: PCT/EP2024/086176 (87) International publication number: WO 2025/125548 (19.06.2025 Gazette 2025/25)

(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: 13.12.2023 SE 2351421 (71) Applicant: PulPac AB 421 31 Västra Frölunda (SE)	(72) Inventors: LITTEN, Neil Anthony Reading Berkshire RG7 3AD (GB) STONE, Jamie Walden Essex CB102NW (GB) MORDUE, Adrian Hampshire GU34 5BJ (GB) BERGFJORD, Mathias 416 48 Göteborg (SE) LJUNGBERG, Martin 416 55 Göteborg (SE) (74) Representative: Zacco Sweden AB  P.O. Box 5581 Löjtnantsgatan 21 114 85 Stockholm 114 85 Stockholm (SE)