(19)

(11)

EP 3 927 628 A1

(12)

(43) Date of publication: 29.12.2021 Bulletin 2021/52 (21) Application number: 20760334.1 (22) Date of filing: 19.02.2020

(51) International Patent Classification (IPC):  B65D 81/38(2006.01) B65D 81/18(2006.01) B65D 81/00(2006.01) (52) Cooperative Patent Classification (CPC): B65D 81/3848; B65D 81/3858 (86) International application number: PCT/US2020/018800 (87) International publication number: WO 2020/172254 (27.08.2020 Gazette 2020/35)

(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: 19.02.2019 US 201916279282 14.02.2020 US 202016791228 (71) Applicant: WestRock Shared Services, LLC Atlanta GA 30328 (US)	(72) Inventors: WIEMANN, David J. Chesterfield, Missouri 63017 (US) HASCHKE, Paul C. Carol Stream, Illinois 60188 (US) MCCARTHY, Timothy L. Wilmette, Illinois 60091 (US) MCDONNELL, William T. Elmhurst, Illinois 60126 (US) (74) Representative: Rule, John Eric et al Coulson & Rule 13 Whitehall Road Rugby, Warwickshire CV21 3AE Rugby, Warwickshire CV21 3AE (GB)