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(11)

EP 4 493 759 A1

(12)

(43) Date of publication: 22.01.2025 Bulletin 2025/04 (21) Application number: 23729242.0 (22) Date of filing: 10.05.2023

(51) International Patent Classification (IPC):  D21H 19/08(2006.01) D21H 19/20(2006.01) D21H 21/16(2006.01) B65D 65/42(2006.01) D21H 19/82(2006.01) D21H 27/10(2006.01) (52) Cooperative Patent Classification (CPC): D21H 27/10; D21H 19/82; D21H 21/16; D21H 19/08; D21H 19/20 (86) International application number: PCT/US2023/021690 (87) International publication number: WO 2023/229845 (30.11.2023 Gazette 2023/48)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 26.05.2022 US 202263346117 P (71) Applicant: Sonoco Development Inc. Hartsville, SC 29550 (US)	(72) Inventors: HUFFER, Scott, William Hartsville, SC 29550 (US) MIRMOW, Mary, Kate Hartsville, SC 29550 (US) (74) Representative: Marks & Clerk LLP  15 Fetter Lane London EC4A 1BW London EC4A 1BW (GB)