US 12,275,572 B2
Ovenable tray composite and package
Hanna-Mari Lahti, Lempäälä (FI); Kalle Ilmari Nättinen, Tempere (FI); and Andrew J. Lischefski, Appleton, WI (US)
Assigned to AMCOR FLEXIBLES NORTH AMERICA, INC., Neenah, WI (US)
Appl. No. 18/016,518
Filed by AMCOR FLEXIBLES NORTH AMERICA, INC., Neenah, WI (US)
PCT Filed Jul. 22, 2020, PCT No. PCT/US2020/043106
§ 371(c)(1), (2) Date Jan. 17, 2023,
PCT Pub. No. WO2022/019905, PCT Pub. Date Jan. 27, 2022.
Prior Publication US 2023/0271767 A1, Aug. 31, 2023
Int. Cl. B65D 1/34 (2006.01); B32B 1/00 (2006.01); B32B 7/06 (2019.01); B32B 27/08 (2006.01); B32B 27/10 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B65D 65/40 (2006.01); B65D 81/34 (2006.01)
CPC B65D 81/343 (2013.01) [B32B 1/00 (2013.01); B32B 7/06 (2013.01); B32B 27/08 (2013.01); B32B 27/10 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B65D 1/34 (2013.01); B65D 65/40 (2013.01); B32B 2255/12 (2013.01); B32B 2255/20 (2013.01); B32B 2255/26 (2013.01); B32B 2307/306 (2013.01); B32B 2307/702 (2013.01); B32B 2307/748 (2013.01); B32B 2439/02 (2013.01); B32B 2439/70 (2013.01); B65D 2565/385 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An ovenable tray composite comprising:
a) a polymeric based liner comprising:
i) an exterior surface layer comprising a polyester;
ii) a first inner layer, wherein the first inner layer is a polyethylene, and,
iii) an interior surface layer comprising a polypropylene, the polypropylene having a Melt Index of about 1.2 grams/10 minutes to about 1.8 grams/10 minutes wherein the first inner layer is located between the exterior surface layer and the interior surface layer;
iv) a second inner layer comprising a first modified polyethylene
v) a third inner layer comprising a barrier polymer, and
vi) a fourth inner layer comprising a second modified polyethylene, wherein layers iv), v) and vi) are located between the first inner layer and the interior surface layer, and
b) a fiber based component, wherein the interior surface layer of the polymeric based liner is removably affixed to the fiber based component.