Web materials with active agent for use in forming reclosable packages

Abstract

Web materials for use in forming reclosable packages generally include a first material layer made of a barrier material, and an active agent carried by the first material layer. When embodied as a bag, the web is used to form at least one of the body panels of the bag, with a pair of opposing body panels joined together along a pair of opposing sides, with a bottom bridging the sides in order to define a compartment between the opposing body panels. The active agent is disposed on the first material layer so as to be in communication with the compartment.

1 . A bag comprising: 
 a pair of opposing body panels joined together along a pair of opposing sides and a bottom bridging the sides to define a compartment between the opposing body panels;    at least one of the body panels formed of a web including 
 a first material layer made of a barrier material, and  
 an active agent carried by the first material layer in communication with the compartment.  
   
   
   
       2 . The bag of  claim 1 , wherein the barrier material is capable of inhibiting transfer of water therethrough.  
   
   
       3 . The bag of  claim 1 , wherein the barrier material is capable of inhibiting transfer of the active agent therethrough.  
   
   
       4 . The bag of  claim 1 , wherein the active agent is disposed in the form of a coating on the first material layer.  
   
   
       5 . The bag of  claim 1 , wherein the active agent is disposed in the form of a stripe on the first material layer.  
   
   
       6 . The bag of  claim 5 , wherein a mouth is defined between the pair of panels opposite the bottom, the stripe being disposed proximate the mouth.  
   
   
       7 . The bag of  claim 1 , wherein the active agent is disposed in the form of a pattern distributed on the first material layer.  
   
   
       8 . The bag of  claim 1 , wherein the active agent is disposed in microcapsules.  
   
   
       9 . The bag of  claim 1 , wherein the active agent is disposed through co-extrusion with the barrier material of the first material layer.  
   
   
       10 . The bag of  claim 1 , wherein the active agent is selected from the group consisting of a freshness-extension agent, an antimicrobial agent, an odor management agent, a color indicator, a spoilage indicator, a fragrant and combinations thereof.  
   
   
       11 . The bag of  claim 1 , further comprising a second material layer having a predetermined material property.  
   
   
       12 . The bag of  claim 11 , wherein the predetermined material property includes permeability to the active agent.  
   
   
       13 . The bag of  claim 11 , wherein the predetermined material property includes permeability to water.  
   
   
       14 . The bag of  claim 11 , wherein the active agent is disposed in an intermediate layer between the first material layer and the second material layer.  
   
   
       15 . The bag of  claim 11 , wherein the predetermined material property includes a sealing characteristic.  
   
   
       16 . The bag of  claim 15 , wherein the sealing characteristic includes at least one of a heat seal, cold seal, ultrasonic, friction characteristic, adhesive or cohesive.  
   
   
       17 . The bag of  claim 11 , wherein the second material layer is hydrophilic.  
   
   
       18 . The bag of  claim 11 , further comprising at least one additional layer disposed between the active agent and the first material layer.  
   
   
       19 . The bag of  claim 11 , wherein the second material layer is made of a barrier material, the second material layer being removable from the first material layer.