MULTILAYERED FILM, WHICH HAS PASSIVE AND ACTIVE ANTIOXYGEN BARRIER LAYERS Russian patent published in 2012 - IPC B32B27/08 C08K3/10 C08L101/00 C08L23/04 

FIELD: chemistry.

SUBSTANCE: film contains multilayered antioxygen barrier component, in which: i) active antioxygen barrier layer is located between two passive antioxygen barrier layers, or ii) passive antioxygen barrier layer is located between two active antioxygen barrier layers. Active layer contains oxygen-absorbing composition, which represents mixture of thermoplastic resin (A) with carbon-carbon double bonds mainly in main chain, salts of transition metal (B) and antioxygen barrier polymer (C). Passive layer contains material selected from group, including copolymer of ethylene and vinyl alcohol, polyvinyl alcohol and their copolymers and combinations. Multilayered antioxygen barrier component is located between sealing layer and stable to external impact layer. Invention also relates to package, containing food product and said film. Passive antioxygen barrier layers assist in preservation of antioxygen barrier properties of film after depletion of capacity to absorb oxygen of active barrier layer.

EFFECT: increased term of film service life.

9 cl, 6 dwg, 3 tbl, 3 ex