Paper/ plastic laminate and electromagnetic shielding material

Abstract

A laminate material comprising: a paper web; a polymeric film having a top surface and a bottom surface, wherein the top surface of the polymeric film is bonded to a bottom surface of the paper web by a first adhesive; and a layer of conductive material with a thickness of at least 2×10 −7 inches, the layer of conductive material having a top surface and a bottom surface, wherein the top surface of the layer of conductive material is bonded to the bottom surface of the polymeric film by a second adhesive, wherein the laminate material is configured to shield radiation having frequencies from 125 kHz to at least 3 GHz.

What is claimed is: 
     
         1 . A laminate material comprising:
 a paper web;   a polymeric film having a top surface and a bottom surface, wherein the top surface of the polymeric film is bonded to a bottom surface of the paper web by a first adhesive; and   a layer of conductive material with a thickness of at least 2×10 −7  inches, the layer of conductive material having a top surface and a bottom surface, wherein the top surface of the layer of conductive material is bonded to the bottom surface of the polymeric film by a second adhesive,   wherein the laminate material is configured to shield radiation having frequencies from 125 kHz to at least 3 GHz.   
     
     
         2 . The laminate material of  claim 1 , wherein the polymeric film includes polyester. 
     
     
         3 . The laminate material of  claim 1 , wherein the layer of conductive material includes one or both of aluminum and copper. 
     
     
         4 . The laminate material of  claim 1 , wherein one or both of the first adhesive and the second adhesive is a 100% solids adhesive. 
     
     
         5 . The laminate material of  claim 1 , wherein one or both of the first adhesive and the second adhesive is solid. 
     
     
         6 . The laminate material of  claim 1 , wherein one or both of the first adhesive and the second adhesive is a water-based adhesive. 
     
     
         7 . The laminate material of  claim 1 , wherein one or both of the first adhesive and the second adhesive is a solvent-based adhesive. 
     
     
         8 . The laminate material of  claim 1 , wherein the paper web includes a filler material capable of providing a particular visual property of the paper web. 
     
     
         9 . A laminate material comprising:
 a first paper web;   a polymeric film having a top surface and a bottom surface, wherein the top surface of the polymeric film is bonded to a bottom surface of the first paper web by a first adhesive;   a layer of conductive material with a thickness of at least 2×10 −7  inches, the layer of conductive material having a top surface and a bottom surface, wherein the top surface of the layer of conductive material is bonded to the bottom surface of the polymeric film by a second adhesive; and   a second paper web having a top surface that is bonded to the bottom surface of the layer of conductive material by a third adhesive,   wherein the laminate material is configured to shield radiation having frequencies from 125 kHz to at least 3 GHz.   
     
     
         10 . The laminate material of  claim 9 , wherein the polymeric film includes polyester. 
     
     
         11 . The laminate material of  claim 9 , wherein the layer of conductive material includes one or both of aluminum and copper. 
     
     
         12 . The laminate material of  claim 9 , wherein one or more of the first, second, and third adhesives is a 100% solids adhesive. 
     
     
         13 . The laminate material of  claim 9 , wherein one or more of the first, second, and third adhesives is solid. 
     
     
         14 . The laminate material of  claim 9 , wherein one or more of the first, second, and third adhesives is a water-based adhesive. 
     
     
         15 . The laminate material of  claim 9 , wherein one or more of the first, second, and third adhesives is a solvent-based adhesive. 
     
     
         16 . The laminate material of  claim 9 , wherein one or both of the first paper web and the second paper web includes a filler material capable of providing a particular visual property of the respective paper web. 
     
     
         17 . A security device capable of electromagnetically shielding an RFID smart chip, the security device comprising:
 a dimensionally stable electromagnetic shielding laminate material comprising:
 a paper web, and 
 a layer of conductive material with a thickness of at least 2×10 −7  inches, the layer of conductive material having a top surface and a bottom surface, wherein the top surface of the layer of conductive material is bonded to a bottom surface of the paper web by a first adhesive; and 
   a substrate positioned adjacent to the dimensionally stable electromagnetic shielding laminate material;   wherein the dimensionally stable electromagnetic shielding laminate material is configured to shield radiation having frequencies from 125 kHz to at least 3 GHz.   
     
     
         18 . The security device of  claim 17 , wherein the layer of conductive material includes one or both of aluminum and copper. 
     
     
         19 . The security device of  claim 17 , further comprising a polymeric film having a top surface and a bottom surface, wherein the top surface of the polymeric film is bonded to the bottom surface of the layer of conductive material by a second adhesive. 
     
     
         20 . The security device of  claim 19 , wherein the polymeric film includes polyester. 
     
     
         21 . The security device of  claim 17 , wherein one or both of the first adhesive and the second adhesive is a 100% solids adhesive. 
     
     
         22 . The security device of  claim 17 , wherein one or both of the first adhesive and the second adhesive is solid. 
     
     
         23 . The security device of  claim 17 , wherein one or both of the first adhesive and the second adhesive is a water-based adhesive. 
     
     
         24 . The security device of  claim 17 , wherein one or both of the first adhesive and the second adhesive is a solvent-based adhesive. 
     
     
         25 . The security device of  claim 17 , wherein the paper web includes a filler material capable of providing a particular visual property of the paper web. 
     
     
         26 . The security device of  claim 17 , wherein the substrate is one or more of wallpaper, paper of an envelope, a sleeve, a passport sleeve, a sheath, a holder, and a folder into which the RFID smart chip can be inserted.