Packaging film, package, package/packed product unit and use for a packaging film

Abstract

The invention concerns a packaging film comprising or consisting of a layer system with a barrier layer preventing oxygen penetration, an adhesion improvement layer adjacent to the barrier layer and an oxygen scavenger layer adjacent to the adhesion improvement layer. The invention also concerns a packaging, a packaging-packed product unit and the use of a packaging film.

1 . A packaging film comprising a layer system with a barrier layer preventing oxygen penetration, an adhesion improvement layer adjacent to the barrier layer and an oxygen scavenger layer adjacent to the adhesion improvement layer. 
     
     
         2 . A packaging film according to  claim 1 , wherein the oxygen scavenger layer is formed from a lacquer material. 
     
     
         3 . A packaging film according to  claim 2 , wherein the lacquer material comprises a matrix of at least one at least partly organic polymer and at least one component selected from components which after suitable triggering scavenge oxygen. 
     
     
         4 . A packaging film according to  claim 1  wherein the adhesion improvement layer is selected from the group consisting of a polyurethane primer layer, an acrylic resin primer layer, an ethylene acrylic acid polymer layer, an extrusion-coated polymer layer, an ionomer resin layer, a plasma treatment layer, a corona treatment layer, a PVD layer, a CVD layer, and a sol-gel layer. 
     
     
         5 . A packaging film according to  claim 1  wherein the layer system comprises a sealing layer. 
     
     
         6 . A packaging film according to  claim 5 , wherein between the sealing layer and the oxygen scavenger layer is provided an adhesion improvement layer. 
     
     
         7 . A packaging film according to  claim 1  wherein the barrier layer is formed as a metal layer. 
     
     
         8 . A packaging comprising at least one packaging film according to  claim 1 . 
     
     
         9 . A packaging according to  claim 8 , wherein the packaging is formed as a blister pack with a cover film, which is sealed to a base film comprising cavities to seal the cavities. 
     
     
         10 . A packaging according to  claim 9 , wherein the base film is formed as a laminated film comprising a barrier layer and/or a PVC layer and/or an oPA layer. 
     
     
         11 . A packaging-packed product unit with a packed product, packed in a packaging according to  claim 8 . 
     
     
         12 . A method for producing a packaging, comprising using a packaging film according to  claim 1 . 
     
     
         13 . A packaging film according to  claim 3 , wherein the matrix contains one or more inorganic organic hybrid polymers. 
     
     
         14 . A packaging film according to  claim 3 , wherein the matrix contains at least one component selected from components which after suitable triggering by radiation scavenge oxygen. 
     
     
         15 . A packaging film according to  claim 5 , wherein the sealing layer is adjacent to the oxygen scavenger layer. 
     
     
         16 . A packaging film according to  claim 1 , wherein the barrier layer is formed as an aluminium layer. 
     
     
         17 . A packaging according to  claim 9 , wherein the cover film is formed by the packaging film. 
     
     
         18 . A packaging-packed product unit according to  claim 11 , wherein the packed product is at least one foodstuff or at least one pharmaceutical product. 
     
     
         19 . A packaging according to  claim 9 , wherein the packaging is a blister pack. 
     
     
         20 . A packaging according to  claim 9 , wherein the packaging is a blister pack and the packaging film is used as at least one of the cover film or the base film.