US 12,304,712 B2
Recyclable film for thermoforming
Michael D. Priscal, Neenah, WI (US); and Jacob A. Lasee, New London, WI (US)
Assigned to AMCOR FLEXIBLES NORTH AMERICA, INC., Neenah, WI (US)
Filed by AMCOR FLEXIBLES NORTH AMERICA, INC., Neenah, WI (US)
Filed on Nov. 7, 2023, as Appl. No. 18/387,779.
Application 18/387,779 is a continuation of application No. 17/439,003, granted, now 11,981,487, previously published as PCT/US2020/026642, filed on Apr. 3, 2020.
Application 17/439,003 is a continuation in part of application No. PCT/US2020/017298, filed on Feb. 7, 2020.
Application 17/439,003 is a continuation in part of application No. PCT/US2019/047530, filed on Aug. 21, 2019.
Application 17/439,003 is a continuation in part of application No. PCT/US2019/047523, filed on Aug. 21, 2019.
Prior Publication US 2024/0076110 A1, Mar. 7, 2024
Int. Cl. B65D 65/40 (2006.01); B29C 51/14 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); C08J 5/18 (2006.01); C08K 3/26 (2006.01); B65D 75/32 (2006.01)
CPC B65D 65/40 (2013.01) [B29C 51/14 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/306 (2013.01); B32B 27/327 (2013.01); C08J 5/18 (2013.01); C08K 3/26 (2013.01); B32B 2250/03 (2013.01); B32B 2250/04 (2013.01); B32B 2250/242 (2013.01); B32B 2250/246 (2013.01); B32B 2264/10 (2013.01); B32B 2264/104 (2013.01); B32B 2307/308 (2013.01); B32B 2307/31 (2013.01); B32B 2307/4023 (2013.01); B32B 2307/558 (2013.01); B32B 2307/72 (2013.01); B32B 2435/02 (2013.01); B32B 2439/70 (2013.01); B32B 2439/80 (2013.01); B65D 75/327 (2013.01); C08J 2323/06 (2013.01); C08J 2331/04 (2013.01); C08K 2003/265 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A thermoformable base film comprising:
a first layer comprising at least one polyethylene and having an overall density between about 0.92 g/cm3 and 0.97 g/cm3,
multiple second layers, each comprising a high-density polyethylene and a hydrocarbon resin, and
a third layer comprising at least one polyethylene and having an overall density between about 0.92 g/cm3 and 0.97 g/cm3,
wherein the multiple second layers are located between the first layer and the third layer, and wherein after thermoforming, the thermoformable base film maintains a shape taken during thermoforming.