Article with combustion retarding properties and uses thereof

Abstract

An article for use in a non-combustible aerosol provision system, the article including a wrapper with a coating including a combustion retarding salt. Further, methods for manufacturing and uses of said articles are disclosed.

1 . An article for use in a non-combustible aerosol provision system, the article comprising:
 a rod comprising a column of aerosol-generating material, the column of aerosol generating material being at least partially wrapped in a wrapper,   wherein at least a portion of a surface of said wrapper comprises a coating comprising a combustion retarding salt.   
     
     
         2 . The article as claimed in  claim 1 , the coating comprising from about 3 wt % to about 70 wt % of at least one combustion retarding salt (dry weight basis). 
     
     
         3 . The article as claimed in  claim 1 , wherein the coating comprises a binder. 
     
     
         4 . The article as claimed in  claim 3 , wherein the binder is selected from one or more of the group consisting of polyvinyl alcohol (PVA), gelatin, gums, acacia gum, starches, polysaccharides, pectins, alginates, wood pulp, celluloses, and cellulose derivatives such as carboxymethylcellulose. 
     
     
         5 . The article as claimed in  claim 3 , wherein the coating comprises from about 30 wt % to about 97 wt % of at least one binder. 
     
     
         6 . The article as claimed in  claim 1 , wherein
 the combustion retarding salt is a metal halide salt, optionally selected from the group consisting of: sodium chloride, potassium chloride, sodium bromide, potassium bromide and combinations thereof.   
     
     
         7 . A non-combustible aerosol provision system comprising an article as claimed in  claim 1 . 
     
     
         8 . A method for manufacturing the article as claimed in  claim 1  wherein the coating is formed by applying to the wrapper a precursor material comprising a binder and the combustion retarding salt. 
     
     
         9 . A method as claimed in  claim 8 , wherein the mixture further comprises a solvent in which at least some of the mixture is soluble. 
     
     
         10 . A method as claimed in  claim 9 , wherein the solvent is selected from the group consisting of water, distilled water, benzyl alcohol, ethanol, methanol, triacetin, glycerol, propylene glycol and combinations thereof. 
     
     
         11 . A method as claimed in  claim 8 , wherein the coating is applied to the wrapper prior to assembly of the article. 
     
     
         12 . A method as claimed in  claim 8 , wherein the coating is applied to the wrapper of the assembled article. 
     
     
         13 . A method as claimed in  claim 8 , wherein the coating is applied to the wrapper using one or more process selected from the group consisting of: spraying, painting or printing. 
     
     
         14 . Use of a wrapper comprising a coating comprising a combustion-retarding salt for retarding combustion of a consumable.