US 12,252,321 B2
Elastomer containing multilayer film and method of manufacture
Angelica Bergen Smith, Charlotte, NC (US); Paul Satterwhite, Simpsonville, SC (US); John Myers, Simpsonville, SC (US); and Sarah Lynn Geer, Charlotte, NC (US)
Assigned to Cryovac, LLC, Charlotte, NC (US)
Appl. No. 17/769,092
Filed by Cryovac, LLC, Charlotte, NC (US)
PCT Filed Oct. 15, 2020, PCT No. PCT/US2020/055649
§ 371(c)(1), (2) Date Apr. 14, 2022,
PCT Pub. No. WO2021/076678, PCT Pub. Date Apr. 22, 2021.
Claims priority of provisional application 62/969,726, filed on Feb. 4, 2020.
Claims priority of provisional application 62/915,056, filed on Oct. 15, 2019.
Prior Publication US 2024/0101327 A1, Mar. 28, 2024
Int. Cl. B65D 75/26 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01)
CPC B65D 75/26 (2013.01) [B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/30 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2307/31 (2013.01); B32B 2307/406 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/734 (2013.01); B32B 2307/7376 (2023.05); B32B 2439/70 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A multilayer film comprising:
at least one outer layer comprising at least 70% by weight of one or more of an ethylene/alpha-olefin copolymer;
and at least one inner layer being an abuse layer comprising a blend of:
at least 1% by weight of an anhydride grafted elastomer selected from the group consisting of ethylene propylene diene monomer, ethylene propylene copolymer, styrene-ethylene-butylene-styrene, ethylene/octene copolymer and blends thereof, the anhydride grafted elastomer having a grafting level between 0.1-3.0 wt %; and
at least 25% by weight one or more polyamides;
wherein at least 5%, 10%, 20%, 30%, 40% or 50% by weight of the multilayer film being of one or more polyamides; the multilayer film having a haze measured according to ASTM D1003 not higher than 20%, and/or a gloss measured according to ASTM D 2457 of at least 90.