US 12,172,812 B2
Food packaging barrier film and method for producing the same
Te-Chao Liao, Taipei (TW); Chun-Che Tsao, Taipei (TW); and Cheng-Hung Chen, Taipei (TW)
Assigned to NAN YA PLASTICS CORPORATION, Taipei (TW)
Filed by NAN YA PLASTICS CORPORATION, Taipei (TW)
Filed on Jul. 24, 2022, as Appl. No. 17/871,977.
Claims priority of application No. 110136637 (TW), filed on Oct. 1, 2021.
Prior Publication US 2023/0109604 A1, Apr. 6, 2023
Int. Cl. C23C 14/00 (2006.01); B65D 65/42 (2006.01); C08J 7/048 (2020.01); C23C 14/08 (2006.01); C23C 14/10 (2006.01); C23C 14/26 (2006.01); C23C 14/30 (2006.01)
CPC B65D 65/42 (2013.01) [C08J 7/048 (2020.01); C23C 14/081 (2013.01); C23C 14/10 (2013.01); C23C 14/26 (2013.01); C23C 14/30 (2013.01); B65D 2565/387 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for producing a food packaging barrier film, comprising:
providing a base film;
depositing an inorganic laminated film on a surface of the base film, wherein the inorganic laminated film sequentially includes a first inorganic material deposition layer, a second inorganic material deposition layer, and a third inorganic material deposition layer, and the first inorganic material deposition layer and the second inorganic material deposition layer are formed in a same vacuum deposition process and in a vacuum condition, and wherein the first inorganic material deposition layer and the second inorganic material deposition layer are respectively formed by different inorganic metal oxides in the same vacuum deposition process, wherein the first inorganic material deposition layer is an aluminum oxide deposition layer, the second inorganic material deposition layer is a silicon oxide deposition layer, and the third inorganic material deposition layer is an aluminum oxide deposition layer; and
coating a barrier coating solution on the inorganic laminated film and then curing the barrier coating solution to form a barrier coating layer.