(19)

(11)

EP 3 737 621 A1

(12)

(43) Date of publication: 18.11.2020 Bulletin 2020/47 (21) Application number: 18899864.5 (22) Date of filing: 20.12.2018

(51) International Patent Classification (IPC):  B65D 75/58(2006.01) B32B 27/00(2006.01) B32B 29/02(2006.01) B32B 5/02(2006.01) B32B 27/12(2006.01) (86) International application number: PCT/US2018/066893 (87) International publication number: WO 2019/139768 (18.07.2019 Gazette 2019/29)

(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: 09.01.2018 US 201815866354 (71) Applicant: Polytex Fibers Corporation Houston, TX 77041 (US)	(72) Inventors: BAZBAZ, Jacobo Bellaire, TX 77401 (US) ZAROLI, Alberto Katy, TX 77494 (US) (74) Representative: Jones, Nicholas Andrew  Withers & Rogers LLP 4 More London Riverside London, SE1 2AU London, SE1 2AU (GB)