Food packaging

Abstract

The use of a polyolefin film comprising a polypropylene polymer and a polyethylene polymer for the packaging of fresh produce.

1 - 19 . (canceled)  
   
   
       20 . A method for the packaging of meat or seafood in which the meat or seafood is packaged on a packaging line using a multilayer film having at least a first layer and a sealing layer, said first layer comprising a heterophasic polypropylene block copolymer and said sealing layer comprising a polyethylene polymer wherein the package is frozen immediately after packaging.  
   
   
       21 . A method as claimed in  claim 20  for the packaging of fish.  
   
   
       22 . A method as claimed in  claim 20  wherein said heterophasic polypropylene polymer is a copolymer of propylene with a C 2-10 -alpha olefin.  
   
   
       23 . A method as claimed in  claim 20  wherein said sealing layer comprises an LDPE or LLDPE.  
   
   
       24 . A method as claimed in  claim 23  wherein said sealing layer comprises an LDPE or LLDPE and a polyethylene copolymer with a polar comonomer.  
   
   
       25 . A method as claimed in  claim 24  wherein said polar comonomer is an acrylate comonomer.  
   
   
       26 . A method as claimed in  claim 20  wherein said sealing layer comprises an LLDPE.  
   
   
       27 . A method as claimed in  claim 26  wherein said sealing layer comprises an mLLDPE and an LLPDE made by Ziegler-Natta catalysis.  
   
   
       28 . A method as claimed in  claim 20  wherein said propylene copolymer is a heterophasic ethylene propylene copolymer.  
   
   
       29 . A method as claimed in  claim 20  wherein said first layer comprises an LLPDE.  
   
   
       30 . A method as claimed in  claim 20  wherein said multilayer film has 3 layers.  
   
   
       31 . A method as claimed in claim  11  wherein said three layer film contains two identical sealing layers sandwiching a first layer.  
   
   
       32 . A method as claimed in  claim 20  further comprising coextruding said first layer and a sealing layer, said first layer comprising a heterophasic polypropylene copolymer with a with a C 2-10 -alpha olefin comonomer and said sealing layer comprising an LLDPE and an ethylene acrylate copolymer, and blowing the extrudate to form said multilayer film.  
   
   
       32 . A method as claimed in  claim 20  comprising: 
 (I) Deep drawing said multilayer film to form a container;    (II) placing said meat or seafood in said container;    (III) heat sealing the container with a second multilayer film as defined in any one of claims  1  to  11 ; and    (IV) immediately freezing the container.    
   
   
       33 . A method as claimed in  claim 20  comprising forming an open package using said multilayer film, filling said package with said meat or seafood, heat-sealing the package and immediately freezing the package.  
   
   
       34 . A multilayer film having a first layer and a sealing layer, said first layer comprising a heterophasic polypropylene block copolymer with a C 2-10 -alpha olefin comonomer and said sealing layer comprising an LLDPE and an ethylene acrylate copolymer.