US 12,291,386 B2
Liners for bulk containers
Scott J. Kelly, Kimberly, WI (US); and David A. Busche, Neenah, WI (US)
Assigned to AMCOR FLEXIBLES NORTH AMERICA, INC., Neenah, WI (US)
Appl. No. 17/279,085
Filed by AMCOR FLEXIBLES NORTH AMERICA, INC., Neenah, WI (US)
PCT Filed Sep. 25, 2018, PCT No. PCT/US2018/052666
§ 371(c)(1), (2) Date Mar. 23, 2021,
PCT Pub. No. WO2020/068053, PCT Pub. Date Apr. 2, 2020.
Prior Publication US 2021/0387786 A1, Dec. 16, 2021
Int. Cl. B65D 77/06 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B65D 88/16 (2006.01)
CPC B65D 77/062 (2013.01) [B32B 27/08 (2013.01); B32B 27/32 (2013.01); B65D 88/1618 (2013.01); B32B 2250/246 (2013.01); B32B 2270/00 (2013.01); B32B 2307/412 (2013.01); B32B 2307/552 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/748 (2013.01); B32B 2439/46 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A liner for a bulk container, the liner comprising:
at least one sidewall comprising at least an exterior ply, an interior ply and optionally, at least one intermediate ply; and
wherein at least one of the plies comprises a first polyolefin-silicone copolymer, wherein the adhesion between the plies of the first sidewall is from 0 g/2.54 cm to 50 g/2.54 cm (0 g/in to 50 g/in), and wherein the liner comprises a flex crack failure time of greater than 125 minutes when measured according to ASTM D 999-08, Method A2, free of dunnage, and with the liner being filled with water having a water weight of 1.089 kg (2,400 lb).