Patent CA-3080400-A1 (CA)
Title: Flex-crack resistant and thermally resistant aseptic bulk bags for flexible packaging
Inventor: FARKAS NICHOLAS
IPC: B32B27/08
Filed: 2018-11-13
Abstract: CA 03080400 2020-04-24 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 11111110iiiinili 0 111 11111 0 Ill 1111 I 0 01 1101 1101 11111 0111 11111 110 1111101111 001111 Organization 0 International Bureau (10) International Publication Number (43) International Publication Date ......="1 WO 2019/099348 A3 23 May 2019 (23.05.2019) WIPO I PC T (51) International Patent Classification: (72) Inventor: FARKAS, Nicholas; P.O. Box 198, 943 Ellen CO8L 23/06 (2006.01) B32B 27/32 (2006.01) Ave., Glenburnie, ON KOH 150 (CA). C08L 23/08 (2006.01) B65D 75/26 (2006.01) (74) Agent: MEHTA, Rakesh H. et al.; Baker & Hostetler LLP, B32B 27/08 (2006.01) 2929 Arch Street, Cira Centre, 12th Floor, Philadelphia, PA (21) International Application Number: 19104-2891 (US). PCT/US2018/060623 (81) Designated States (unless otherwise indicated, for every (22) International Filing Date: kind of national protection available): AE, AG, AL, AM, 13 November 2018 (13.11.2018) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (25) Filing Language: English DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (26) Publication Language: English HR, HU, ED, EL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (30) Priority Data: MG, MK, MN, MW, MX, MY, MZ, NA, NG, NL NO, NZ, 62/585,673 14 November 2017 (14.11.2017) US OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (71) Applicant: LIQUI-BOX CORPORATION [US/US]; SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, Riverfront Plaza, 901 East Byrd Street, Suite 1105, Rich- TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. mond, VA 23219 (US). (54) Title: FLEX-CRACK RESISTANT AND THERMALLY RESISTANT ASEPTIC BULK BAGS FOR FLEXEBLE PACKAGING ._ =Zr ' 4,, . , " ,µ t 4- , ' ' ' ----r\--,-T.---4---A=:==. ---7 = ,,A:\ tv, ¨ . ... _ ,-*.... r = %4' '''µµ, s,:,,A, N H , , ' = -, ¨ : . 4: : =: , =.,,,:,,w,,,: _ = ''i'''µAl = = " . . . ,., = 1 ,11;VIN z = . , ,, . .. , - .. , ,..,..;:aõ = = , , Z,,, ..z =i, '.....M= = = , , , ss.s: = ;t:µ;;;!., V , = = ., = \ .,,,,= ,1 =:µ,.v. = ., _ k ........................................ . a _ ,. --en Fig. 8 IC (57) Abstract: This invention relates to inner-plies for bulk-bags that surprisingly offer not only high thermal resistance, but also high Nre en flex-crack resistance. This invention also relates to such bulk- bags made for packaging of flowable materials, aseptic or otherwise, and = the process for improving their flex-crack and thermal resistance. Preferably, the packaging is aseptic. More specifically, the inner-ply = of the invention comprises a resin blend comprising the Exceed XP resin; an LDPE resin or an ethylene¨ a-olefin copolymer (EAO 0 ----. copolymer); or a blend of said LDPE resin and said EAO copolymer, with flex-crack resistance improved in both machine direction and 0'1 transverse direction, in conjunction with an improved thermal resistance. Thus, in addition to possessing good flex-crack resistance, Il the bulk-bags can withstand steam sterilization and/or aseptic packaging conditions. NI c [Continued on next page] CA 03080400 2020-04-24 WO 2019/099348 A3 HIM l0llll l llll 11111 11111 3E1111 1111111111 IllIl 1111 11111 111111101111111111101111 (84) Designated States (unless otherwise indicated, for every kind of regional protection available): AREPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: ¨ with international search report (Art. 21(3)) ¨ before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) (88) Date of publication of the international search report: 2'7 June 2019 (2'7.06.2019)