US 12,391,028 B2
Recyclable films and packaging
Otacilio T. Berbert, Oshkosh, WI (US); Zheng Tian, Neenah, WI (US); Desmond J. VanHouten, Appleton, WI (US); and Thomas A. Schell, Winneconne, WI (US)
Assigned to AMCOR FLEXIBLES NORTH AMERICA, INC., Neenah, WI (US)
Appl. No. 17/262,185
Filed by AMCOR FLEXIBLES NORTH AMERICA, INC., Neenah, WI (US)
PCT Filed Sep. 7, 2018, PCT No. PCT/US2018/050054
§ 371(c)(1), (2) Date Jan. 21, 2021,
PCT Pub. No. WO2020/050860, PCT Pub. Date Mar. 12, 2020.
Prior Publication US 2021/0291503 A1, Sep. 23, 2021
Int. Cl. B32B 27/32 (2006.01); B29C 48/00 (2019.01); B29C 48/21 (2019.01); B29C 48/91 (2019.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/34 (2006.01); B65D 65/40 (2006.01); B29L 7/00 (2006.01); B29L 31/00 (2006.01)
CPC B32B 27/32 (2013.01) [B29C 48/0018 (2019.02); B29C 48/022 (2019.02); B29C 48/21 (2019.02); B29C 48/91 (2019.02); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/34 (2013.01); B65D 65/40 (2013.01); B29K 2023/06 (2013.01); B29L 2007/008 (2013.01); B29L 2031/712 (2013.01); B32B 2250/242 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/31 (2013.01); B32B 2307/514 (2013.01); B32B 2307/748 (2013.01); B32B 2435/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A recyclable film comprising:
a. a base film comprising a composition consisting of high density polyethylene, medium density polyethylene, low density polyethylene, linear low density polyethylene, or combinations thereof, the base film being oriented, annealed and irradiatively cross-linked, and
b. a sealant,
wherein the base film has a free shrink rate of less than 10% in the machine direction and a free shrink rate of less than 10% in the transverse direction upon application of heat up to 90° C., and the base film has a clarity of at least 85%.