Recyclable paper and method and recycling the same

Abstract

A recyclable structure and methods of forming are provided herein. The recyclable structure comprises a paper layer defining a first surface and a second surface opposite the first surface. A coating layer is disposed adjacent at least one of the first surface or the second surface of the paper layer, and the coating layer is water soluble. The recyclable structure further comprises at least one second layer adjacent the coating layer.

1 . A recyclable structure comprising:
 a paper layer defining an inner surface and an outer surface opposite the inner surface;   a coating layer disposed adjacent at least one of the inner surface or the outer surface of the paper layer, wherein the coating layer is water soluble; and   at least one second layer adjacent the coating layer.   
     
     
         2 . The recyclable structure of  claim 1 , wherein the coating layer is a modified starch. 
     
     
         3 . The recyclable structure of  claim 1 , wherein the coating layer is a food grade starch. 
     
     
         4 . The recyclable structure of  claim 1 , wherein the coating layer defines a low molecular weight. 
     
     
         5 . The recyclable structure of  claim 1 , wherein the coating layer is printable onto the paper layer. 
     
     
         6 . The recyclable structure of  claim 1 , wherein the coating layer is a first coating layer and wherein the at least one second layer is an outer second layer and an inner second layer, wherein the recyclable structure further comprises a second coating layer,
 wherein the first coating layer is disposed on the inner surface of the paper layer, and the inner second layer is disposed on the first coating layer; and   wherein the second coating layer is disposed on the outer surface of the paper layer, and the outer second layer is disposed on the second coating layer.   
     
     
         7 . The recyclable structure of  claim 1 , wherein when exposed to water, the coating layer is configured to dissolve so as to separate the paper layer and the at least one second layer. 
     
     
         8 . The recyclable structure of  claim 1 , wherein the at least one second layer is an ink layer. 
     
     
         9 . The recyclable structure of  claim 1 , wherein the at least one second layer is a polymeric layer. 
     
     
         10 . The recyclable structure of  claim 1 , wherein the at least one second layer is an electron-beam coating. 
     
     
         11 . The recyclable structure of  claim 10 , further comprising a layer of aluminum oxide on the electron-beam coating. 
     
     
         12 . The recyclable structure of  claim 1 , further comprising a heat seal layer adjacent the at least one second layer opposite the coating layer. 
     
     
         13 . The recyclable structure of  claim 1 , wherein the coating layer has a degree of hydrolysis between 70%-100%. 
     
     
         14 . A recyclable structure comprising:
 a paper layer defining an outer surface and an inner surface opposite the outer surface;   a first coating layer disposed adjacent the inner surface of the paper layer, wherein the coating layer is water soluble;   a primer positioned adjacent the first coating layer; and   a barrier layer adjacent the primer layer.   
     
     
         15 . The recyclable structure of  claim 14 , further comprising:
 a second coating layer disposed adjacent the outer surface of the paper layer;   and   an ink layer disposed on the second coating layer.   
     
     
         16 . The recyclable structure of  claim 14 , wherein the primer is an adhesive and the barrier layer is a polymeric barrier. 
     
     
         17 . The recyclable structure of  claim 14 , wherein the barrier layer comprises an electron-beam coating. 
     
     
         18 . The recyclable structure of  claim 14 , wherein the coating layer has a degree of hydrolysis between 70%-100%. 
     
     
         19 . A method of forming a recyclable structure, the method comprising:
 printing a coating layer onto an inner surface or an outer surface of a paper layer, wherein the inner surface is opposite the outer surface, and wherein the coating layer is water soluble; and   applying at least one second layer adjacent the coating layer.   
     
     
         20 . The method of  claim 19 , wherein the at least one second layer is one of a barrier layer or an ink layer.