(19)

(11)

EP 4 363 209 A1

(12)

(43) Date of publication: 08.05.2024 Bulletin 2024/19 (21) Application number: 21948672.7 (22) Date of filing: 02.07.2021

(51) International Patent Classification (IPC):  B31B 170/20(2017.01) (52) Cooperative Patent Classification (CPC): B31B 2170/20; B65D 31/02; B65D 31/10; B65D 75/5827 (86) International application number: PCT/US2021/040344 (87) International publication number: WO 2023/277929 (05.01.2023 Gazette 2023/01)

(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 (71) Applicant: Polytex Fibers LLC Houston, TX 77041 (US)	(72) Inventors: BAZBAZ, Jacobo Houston, Texas 77041 (US) ZAROLI, Alberto Houston, Texas 77041 (US) (74) Representative: Jones, Nicholas Andrew  Withers & Rogers LLP 2 London Bridge London SE1 9RA London SE1 9RA (GB)