(19)

(11)

EP 4 149 860 A1

(12)

(43) Date of publication: 22.03.2023 Bulletin 2023/12 (21) Application number: 21729734.0 (22) Date of filing: 12.05.2021

(51) International Patent Classification (IPC):  B65D 81/03(2006.01) (52) Cooperative Patent Classification (CPC): B65D 2571/00296; B65D 5/42; B65D 5/542; B65D 73/0078; B65D 71/42; B65D 71/46; B65D 5/5445; B65D 5/029; B65D 5/425; B65D 2571/00444; B65D 2571/0045; B65D 71/20; B65D 2571/00277; B65D 2571/0066; B65D 2571/00185; B65D 2571/00543; B65D 2571/00759 (86) International application number: PCT/US2021/032016 (87) International publication number: WO 2021/231587 (18.11.2021 Gazette 2021/46)

(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: 12.05.2020 US 202063023793 P (71) Applicant: WestRock Packaging Systems, LLC Atlanta GA 30328 (US)	(72) Inventor: BARRETTE, Alex N. Richmond, Virginia 23222 (US) (74) Representative: Rule, John Eric et al Coulson & Rule 13 Whitehall Road Rugby, Warwickshire CV21 3AE Rugby, Warwickshire CV21 3AE (GB)