US 11,939,146 B2
Silo bags with non-uniform thickness and methods of producing
Akanksha Garg, Pearland, TX (US); Ashishkumar S. Lokhande, Mumbai (IN); Pavan Kumar Valavala, Missouri City, TX (US); Jose Eduardo Ruiz, Sugar Land, TX (US); Maximiliano Zanetti, Bahia Blanca (AR); and Kurt A. Koppi, Midland, MI (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and PBBPolisur S.R.L., Buenos Aires (AR)
Appl. No. 17/311,457
Filed by Dow Global Technologies LLC, Midland, MI (US); and PBBPolisur S.R.L., Buenos Aires (AR)
PCT Filed Nov. 14, 2019, PCT No. PCT/US2019/061446
§ 371(c)(1), (2) Date Jun. 7, 2021,
PCT Pub. No. WO2020/123091, PCT Pub. Date Jun. 18, 2020.
Claims priority of provisional application 62/777,978, filed on Dec. 11, 2018.
Prior Publication US 2022/0024686 A1, Jan. 27, 2022
Int. Cl. B32B 1/08 (2006.01); B32B 3/26 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B65D 88/16 (2006.01)
CPC B65D 88/1618 (2013.01) [B32B 1/08 (2013.01); B32B 3/263 (2013.01); B32B 27/08 (2013.01); B32B 27/327 (2013.01); B32B 2307/308 (2013.01); B32B 2307/72 (2013.01); B32B 2307/732 (2013.01); B32B 2439/06 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A multilayer silo bag comprising:
a tube comprising at least two layers, the tube having a first open end, a second open end, and a first region disposed between the first and second end and a second region disposed between the first and second end,
wherein each of the at least two layers comprises an ethylene/alpha-olefin interpolymer having a density of 0.90 g/cc to 0.965 g/cc when measured according to ASTM D792 and a melt index (I2) of 0.1 to 6.0 g/10 minutes when measured according to ASTM D1238, a low density ethylene-based polymer having a density of 0.917 g/cc to 0.935 g/cc and melt index (I2) of 0.1 to 2.0 g/10 minutes, or combinations thereof;
wherein the first region has a thickness of at least 10% greater than a thickness of the second region;
wherein the first region has a surface area that is at least 65% of an overall surface area of the multilayer silo bag; and
wherein the tube has an overall thickness of 50 micrometers (μm) to 350 μm.