Methods of making oxygen scavenging articles containing moisture

Abstract

An extruded or molded article containing iron based oxygen scavenger, electrolytes, activated carbon, silica gel, or other water absorbing media, and optionally pore formers, is subjected to deformation to create voids or porosity, and subjected to water spraying or dipping to obtain a water activity of 0.4 or higher. The article is placed in a container or package containing oxygen sensitive articles.

1 .- 25 . (canceled) 
     
     
         26 . An oxygen scavenging material made by:
 stretching a film containing an oxygen scavenger to obtain a stretched film; and   wetting the stretched film with a liquid such that pores in the material retain a portion of the liquid.   
     
     
         27 . The oxygen scavenging material of  claim 26 , wherein the film containing the oxygen scavenger comprises the oxygen scavenger, salt, as moisture absorber, and a polymer. 
     
     
         28 . The oxygen scavenging material of  claim 26 , wherein the film containing the oxygen scavenger comprises a bonding agent. 
     
     
         29 . The oxygen scavenging material of  claim 26 , wherein the film containing the oxygen scavenger comprises a pore former. 
     
     
         30 . The oxygen scavenging material of  claim 26 , wherein the film is extruded from a mixture of the oxygen scavenger, a salt, a moisture absorber, and a polymer. 
     
     
         31 . A sachet formed using the oxygen scavenging material of  claim 26 . 
     
     
         32 . An oxygen scavenging article formed using the oxygen scavenging material of  claim 26 . 
     
     
         33 . The oxygen scavenging article of  claim 32 , formed as a packet, a ribbon, a strand, a ring, a flat film, a sheet, a label, an insert, lid stock, or a sealing layer. 
     
     
         34 . The oxygen scavenging material of  claim 26 , wherein the liquid is water. 
     
     
         35 . The oxygen scavenging material of  claim 26 , wherein the liquid comprises an alcohol and water mixture, glycerin, a glycerin and water mixture or an electrolytic solution 
     
     
         36 . An oxygen scavenging article comprising:
 a stretched oxygen scavenging film having a plurality of axially-extending pores formed by stretching the oxygen scavenging film; and   a liquid retained in the axially-extending pores.   
     
     
         37 . The oxygen scavenging article of  claim 36 , wherein each of the plurality of pores is sized generally between about 0.1 micron and 500 micron across. 
     
     
         38 . The oxygen scavenging article of  claim 36 , wherein the liquid is water. 
     
     
         39 . The oxygen scavenging article of  claim 36 , wherein the stretched oxygen scavenging film comprises a polymer, an oxygen scavenger, a moisture absorber, and a salt. 
     
     
         40 . The oxygen scavenging article of  claim 36 , further comprising at least one of a pore former and a bonding agent. 
     
     
         41 . The oxygen scavenging article of  claim 36 , wherein the oxygen scavenger is one of a packet, a ribbon, a strand, a ring, a flat film, a sheet, a label, an insert, lid stock, or a sealing layer. 
     
     
         42 . The oxygen scavenging material of  claim 26 , wherein the liquid comprises an alcohol and water mixture, glycerin, a glycerin and water mixture or an electrolytic solution