(19)

(11)

EP 4 313 793 A1

(12)

(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 22713004.4 (22) Date of filing: 15.03.2022

(51) International Patent Classification (IPC):  B65D 51/22(2006.01) B65D 81/20(2006.01) (52) Cooperative Patent Classification (CPC): B65D 51/224; B65D 2251/00; B65D 2251/0003; B65D 2251/0006; B65D 2251/0018; B65D 2251/0068; B65D 2251/0093; B65D 2543/00; B65D 2543/00009; B65D 2543/00064; B65D 2543/00101; B65D 2543/00175; B65D 2543/00194; B65D 2543/00259; B65D 2543/00296; B65D 2543/00342; B65D 2543/0037; B65D 81/2069 (86) International application number: PCT/GB2022/050664 (87) International publication number: WO 2022/208046 (06.10.2022 Gazette 2022/40)

(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: 01.04.2021 GB 202104737 (71) Applicant: Par-Pak Europe Limited Milton Keynes Buckinghamshire MK11 3HA (GB)	(72) Inventors: PRETTEJOHN, Joseph Milton Keynes, Buckinghamshire MK11 3HA (GB) HARRISON, Keith Milton Keynes, Buckinghamshire MK11 3HA (GB) (74) Representative: Murgitroyd & Company  Murgitroyd House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)