Multilayer functional paper

Abstract

A paper packaging structure is provided herein. The paper packaging structure comprises a paper structure having an inner surface and an outer surface. The structure further includes a barrier layer disposed adjacent the inner surface of the paper structure. The barrier layer comprises a water-based oxygen barrier and a solvent based sealant layer, wherein the oxygen barrier is positioned adjacent the inner surface of the paper structure.

That which is claimed: 
     
         1 . A paper packaging structure comprising:
 a paper structure having an inner surface and an outer surface;   a barrier layer disposed adjacent the inner surface of the paper structure, wherein the barrier layer comprises a water-based oxygen barrier and a solvent-based sealant layer, wherein the oxygen barrier is positioned adjacent the inner surface of the paper structure.   
     
     
         2 . The paper packaging structure of  claim 1 , wherein the inner surface of the paper structure is surface treated. 
     
     
         3 . The paper packaging structure of  claim 1 , wherein the paper structure comprises a vacuum deposited barrier coating. 
     
     
         4 . The paper packaging structure of  claim 3 , wherein the vacuum deposited barrier coating is AlOx, or SiOx. 
     
     
         5 . The paper packaging structure of  claim 1 , wherein the paper structure comprises a metalized paper. 
     
     
         6 . The paper packaging structure of  claim 5 , wherein the paper structure comprises a topcoat applied to the metalized surface of the paper structure. 
     
     
         7 . The paper packaging structure of  claim 1 , wherein the paper structure comprises a metal layer. 
     
     
         8 . The paper packaging structure of  claim 7 , wherein the paper structure comprises a topcoat applied to the metal layer. 
     
     
         9 . The paper packaging structure of  claim 8 , wherein the topcoat is configured to facilitate a bond between the paper structure and the barrier layer. 
     
     
         10 . The paper packaging structure of  claim 7 , wherein the metal layer is applied to a primer layer. 
     
     
         11 . The paper packaging structure of  claim 1 , wherein the sealant layer is a heat seal coating. 
     
     
         12 . The paper packaging structure of  claim 1 , wherein the oxygen barrier is a PVA solution. 
     
     
         13 . The paper packaging structure of  claim 10 , wherein the PVA solution is cross linked. 
     
     
         14 . The paper packaging structure of  claim 1 , wherein the sealant layer is a cold seal coating. 
     
     
         15 . The paper packaging structure of  claim 1 , wherein the barrier layer defines a uniform thickness. 
     
     
         16 . The paper packaging structure of  claim 1 , wherein the paper structure comprises a moisture barrier. 
     
     
         17 . A method of making a paper structure, the method comprising:
 applying a surface treatment to a paper structure;   coating a water-based oxygen barrier onto the surface treated surface of the paper structure;   at least partially drying the water-based oxygen barrier; and   coating a solvent-based sealant layer onto the water-based oxygen barrier.   
     
     
         18 . The method of  claim 17 , wherein the paper structure comprises a moisture barrier. 
     
     
         19 . The method of  claim 17 , wherein the paper structure is metalized and forms a metalized surface. 
     
     
         20 . The method of  claim 17 , additionally comprising applying a topcoat to the metalized surface of the paper structure. 
     
     
         21 . The method of  claim 17 , additionally comprising applying a primer to the paper structure. 
     
     
         22 . The method of  claim 17 , wherein the surface treatment is a corona treatment. 
     
     
         23 . The method of  claim 17 , wherein the oxygen barrier is applied to the paper structure at a ratio of between 0.25-1 pound per ream. 
     
     
         24 . The method of  claim 17 , wherein the oxygen barrier is applied to the paper structure at a ratio of between 0.5-0.7 pounds per ream. 
     
     
         25 . The method of  claim 17 , wherein the sealant layer is applied at a weight ratio between 1-4 pounds per ream. 
     
     
         26 . The method of  claim 17 , wherein the sealant layer is applied at a weight ratio between 2-3 pounds per ream. 
     
     
         27 . The method of  claim 17 , wherein the paper structure comprises a vacuum deposited barrier coating. 
     
     
         28 . A package comprising:
 a paper packaging structure, wherein the paper packaging structure comprises:
 paper structure having an inner surface and an outer surface; and 
 a barrier layer disposed adjacent the inner surface of the paper structure, wherein the barrier layer comprises a water-based oxygen barrier and a solvent-based sealant layer, wherein the oxygen barrier is positioned adjacent the inner surface of the paper structure, 
   and wherein the paper packaging structure is sealed about a product to form a package.