Tamper indicating security bag

Abstract

A security bag has tamper indicating features that may be incorporated directly on the bag during manufacture, without requiring conventional tamper-indicating tapes. Release material is selectively applied to the bag in the form of a pattern or void message, prior to treatment of the bag to improve ink-retaining characteristics. After treatment, an ink layer is applied over the release material. An adhesive layer is applied to the bag in an area that will seal an opening of the bag and contact the ink layer at least when the bag is sealed. When the bag is reopened after initial sealing, portions of the ink layer applied over the release material will be retained with the adhesive, while the remainder of the ink layer will be retained on the treated surface of the bag.

1 . A security bag, comprising: 
 first and second opposing wall sections defining a receptacle;    an opening to said receptacle;    release material selectively disposed on at least one of said first and second opposing wall sections, adjacent said opening;    an ink layer disposed on at least one of said first and second opposing wall sections, atop said release material;    an adhesive layer disposed on at least one of said first and second opposing wall sections, proximate said opening, for sealing said opening.    
   
   
       2 . The security bag of  claim 1 , wherein said release material and said ink layer are disposed on only one of said first and second wall sections.  
   
   
       3 . The security bag of  claim 1 , wherein said release material and said ink layer are disposed on both said wall sections.  
   
   
       4 . The security bag of  claim 1 , wherein said release material, said ink layer, and said adhesive layer are all disposed on only one of said wall sections.  
   
   
       5 . A security bag, comprising: 
 first and second opposing wall sections defining a receptacle;    an opening to said receptacle;    a closure configured to engage said opening;    release material selectively disposed on at least one of said first wall section, said second wall section, and said closure;    an ink layer disposed atop said release material on at least one of said first wall section, said second wall section, and said closure;    an adhesive layer disposed on at least one of said first wall section, said second wall section, and said closure, such that said opening may be sealed by said adhesive when said closure is engaged with said opening and said adhesive is in contact with said ink layer at least when said closure is engaged with said opening.    
   
   
       6 . The security bag of  claim 5 , wherein said closure comprises at least one of said first and second wall sections.  
   
   
       7 . The security bag of  claim 5 , wherein said closure comprises a flap member configured to engage said opening.  
   
   
       8 . The security bag of  claim 6 , wherein said opening is defined by an aperture formed said first wall section.  
   
   
       9 . The security bag of  claim 8 , wherein said release material and said ink layer are disposed on said first wall section, adjacent said aperture.  
   
   
       10 . The security bag of  claim 8 , wherein said release material and said ink layer are disposed on said closure engagable with said aperture.  
   
   
       11 . The security bag of  claim 8 , wherein said release material and said ink layer are disposed on said first wall section, adjacent said aperture, and on said closure engageable with said aperture.  
   
   
       12 . The security bag of  claim 6 , wherein said adhesive is positioned to contact said ink layer when said opening is sealed.  
   
   
       13 . The security bag of  claim 6 , wherein said adhesive layer is disposed atop said ink layer on at least one of said first wall section, said second wall section and said closure.  
   
   
       14 . A method of making a tamper indicating bag, comprising: 
 selectively applying release material to at least one portion of the bag;    treating the bag to enhance ink retention characteristics of the bag; and    applying an ink layer to the at least one portion of the bag, atop the release material.    
   
   
       15 . The method of  claim 14 , further comprising: 
 applying an adhesive layer to the bag, atop the ink layer.    
   
   
       16 . The method of  claim 14 , further comprising: 
 applying an adhesive layer to the bag in an area that will engage the ink layer when the bag is sealed.    
   
   
       17 . The method of  claim 14 , wherein treating the bag comprises corona treating at least a portion of the bag.