US 11,858,242 B2
All-polyethylene laminate film structures having barrier adhesive layer
Kalyan Sehanobish, Sanford, MI (US); Amira A. Marine, Missouri City, TX (US); and Daniele Vinci, Lucerne (CH)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Filed by Dow Global Technologies LLC, Midland, MI (US)
Filed on Jun. 29, 2022, as Appl. No. 17/852,446.
Application 17/852,446 is a division of application No. 16/634,944, granted, now 11,472,167, previously published as PCT/US2018/031722, filed on May 9, 2018.
Claims priority of provisional application 62/539,115, filed on Jul. 31, 2017.
Prior Publication US 2022/0324214 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 27/32 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01)
CPC B32B 27/32 (2013.01) [B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 2250/242 (2013.01); B32B 2307/72 (2013.01); B32B 2307/7244 (2013.01); B32B 2553/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A recyclable, all-polyethylene laminate film structure suitable for use in a flexible packaging, consisting of:
a first film consisting essentially of
(A) a sealant film layer consisting essentially of an ethylene-based polymer;
(B) one or more intermediate film layers, each intermediate film layer consisting essentially of an ethylene-based polymer; and
(C) a structural film layer consisting essentially of an ethylene-based polymer,
wherein the one or more intermediate film layers (B) are disposed between the sealant film layer (A) and the structural film layer (C);
a second film consisting essentially of an ethylene-based polymer; and
a barrier adhesive layer disposed on a surface of the structural film layer (C) opposite the one or more intermediate film layers (B), wherein the first film is bonded to the second film by way of the barrier adhesive layer, and
wherein the recyclable, all-polyethylene laminate film structure has an oxygen transmission rate not greater than 100 cc O2/m2/day, measured according to ASTM Method D3985.