(19)

(11)

EP 4 211 057 A1

(12)

(43) Date of publication: 19.07.2023 Bulletin 2023/29 (21) Application number: 21867373.9 (22) Date of filing: 31.08.2021

(51) International Patent Classification (IPC):  B65D 88/14(2006.01) B65D 81/38(2006.01) B65D 88/52(2006.01) B65D 19/02(2006.01) (52) Cooperative Patent Classification (CPC): B65D 81/382; B65D 88/14; B65D 88/744; F25D 3/06; F25D 2303/08221; F25D 2303/08222; F25D 23/063; F25D 23/085 (86) International application number: PCT/US2021/048497 (87) International publication number: WO 2022/055756 (17.03.2022 Gazette 2022/11)

(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: 11.09.2020 US 202017018905 (71) Applicant: Sonoco Development, Inc. Hartsville, SC 29550 (US)	(72) Inventors: VANDERPLAS, Benjamin, Gerald Northbrook, IL 60062 (US) DEGROW, Bradley, Morrison Cary, NC 27519 (US) AHMED, Iftekhar Pierrefonds, QC H9H 3T5 (CA) FOSTER, John Mount Prospect, IL 60056 (US) (74) Representative: Reinhardt, Markus  Patentanwaltskanzlei Reinhardt Postfach 11 65 83225 Aschau 83225 Aschau (DE)