(19)

(11)

EP 4 175 888 A1

(12)

(43) Date of publication: 10.05.2023 Bulletin 2023/19 (21) Application number: 21748724.8 (22) Date of filing: 02.07.2021

(51) International Patent Classification (IPC):  B65D 5/28(2006.01) B65D 71/36(2006.01) (52) Cooperative Patent Classification (CPC): B65D 71/36; B65D 5/28; B65D 2571/00141; B65D 2571/0066; B65D 2571/00728; B65D 2571/0079; B65D 2571/00839; B65D 2571/00895; B65D 2571/0045 (86) International application number: PCT/US2021/040227 (87) International publication number: WO 2022/006487 (06.01.2022 Gazette 2022/01)

(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: 03.07.2020 US 202063048025 P (71) Applicant: WestRock Shared Services, LLC Atlanta GA 30328 (US)	(72) Inventors: MCLEOD, Michael B. Romeoville, Illinois 60446 (US) SMITH, Kenneth C. Marietta, Georgia 30066 (US) (74) Representative: Rule, John Eric et al Coulson & Rule 13 Whitehall Road Rugby, Warwickshire CV21 3AE Rugby, Warwickshire CV21 3AE (GB)