A plug comprising a combustion retarding additive and uses thereof

Abstract

An article for use in a non-combustible aerosol provision system, the article including a plug having a combustion retarding additive and related methods for manufacturing and use of said articles.

1 . An article for use in a non-combustible aerosol provision system, the article:
 a rod comprising an aerosol-generating material,   and a plug comprising a combustion retarding additive.   
     
     
         2 . The article as claimed in  claim 1 , wherein the plug comprising a combustion retarding additive is;
 (i) at the distal end of the article;   (ii) adjacent to the rod of aerosol generating material; and/or   (iii) in contact with the rod of aerosol generating material.   
     
     
         3 . (canceled). 
     
     
         4 . (canceled). 
     
     
         5 . The article as claimed in  claim 1 , wherein the combustion retarding additive is an alkali metal salt, optionally selected from the group consisting of: sodium chloride, potassium chloride, sodium bromide, potassium bromide, and combinations thereof. 
     
     
         6 . The article as claimed in  claim 1 , wherein the plug is formed from a sheet material, optionally wherein the sheet material is paper or paper-like material or wherein the sheet material comprises an amorphous solid, optionally wherein the combustion retarding additive is incorporated in the amorphous solid material. 
     
     
         7 . (canceled) 
     
     
         8 . (canceled) 
     
     
         9 . The article as claimed in  claim 6 , wherein the combustion retarding additive is incorporated in the sheet material; and/or wherein the combustion retarding additive is provided in a coating on a surface of the sheet material. 
     
     
         10 . (canceled) 
     
     
         11 . The article as claimed in  claim 1 , wherein the plug comprises a mass of an amorphous solid material, optionally wherein the combustion retarding additive is incorporated in the amorphous solid material. 
     
     
         12 . (canceled) 
     
     
         13 . The article as claimed in  claim 11 , wherein the amorphous solid material comprises from about 3 wt % to about 60 wt % combustion retarding salt (dry weight basis). 
     
     
         14 . The article as claimed in  claim 1 , wherein the combustion retarding additive is provided in a coating on a surface of the plug, the coating optionally comprising from about 3 wt % to about 70 wt % of at least one combustion retarding additive (dry weight basis), and/or optionally comprising a binder. 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . The article as claimed in  claim 14 , 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, optionally wherein the coating comprises from about 10 wt % to about 97 wt % of at least one binder. 
     
     
         18 . (canceled) 
     
     
         19 . The article as claimed in  claim 1 , comprising
 heating material, optionally wherein the heating material is:   (i) heatable by penetration with a varying magnetic field to heat the aerosol generating material; and/or   (ii) in contact with the aerosol generating material; and/or   (iii) in contact with the plug comprising a combustion retarding additive.   
     
     
         20 . (canceled) 
     
     
         21 . (canceled) 
     
     
         22 . (canceled) 
     
     
         23 . The article as claimed in  claim 1 , wherein the aerosol generating material:
 (i) comprises one or more of tobacco per se, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco extract, homogenised tobacco or tobacco substitutes;   (ii) is in the form of ground tobacco, cut rag tobacco, extruded tobacco, reconstituted tobacco, reconstituted smokeable material, liquid, gel, gelled sheet, powder or agglomerates; and/or   (iii) comprises non-tobacco material.   
     
     
         24 . (canceled) 
     
     
         25 . (canceled) 
     
     
         26 . The article as claimed in  claim 1 , wherein the plug comprising a combustion retarding additive;
 (i) exhibits a pressure drop of from about 5 to about 40 mmWG; and/or   (ii) has a bulk density of between about 0.1 and about 0.3 mg/mm3.   
     
     
         27 . (canceled) 
     
     
         28 . A non-combustible aerosol provision system comprising an article as claimed in  claim 1 . 
     
     
         29 . A method for manufacturing the article as claimed in  claim 1 , wherein a combustion retarding additive is incorporated into a plug or is applied to a surface of a plug, and the plug is incorporated into an article with a rod of aerosol generating material, optionally wherein the plug is incorporated at the distal end of the article. 
     
     
         30 . (canceled) 
     
     
         31 . The method as claimed in  claim 29 , comprising gathering one or more sheets into a rod, wrapping the rod and cutting it into discrete sections to form the plug, optionally crimping the sheet prior to gathering the sheet into a rod, and/or gathering the sheet around a former to form a hole though the plug. 
     
     
         32 . (canceled) 
     
     
         33 . (canceled) 
     
     
         34 . The method as claimed in  claim 31 , comprising applying to a surface of the sheet material a coating comprising the combustion retarding additive or comprising applying to a surface of the plug a coating comprising the combustion retarding additive. 
     
     
         35 . (canceled) 
     
     
         36 . The method as claimed in  claim 34 , wherein the coating is formed by applying a precursor material comprising a binder and the combustion retarding additive to a surface, optionally wherein the coating is applied to a surface using one or more processes selected from the group consisting of: spraying, painting or printing. 
     
     
         37 . (canceled) 
     
     
         38 . Use of a combustion retarding additive for retarding combustion of a plug in an article for use in a non-combustible aerosol provision system. 
     
     
         39 . A plug for use in an article for use in a non-combustible aerosol provision system, the plug comprising a combustion retarding additive. 
     
     
         40 . The plug as claimed in  claim 39 , wherein the plug;
 (i) comprises a combustible material;   (ii) comprises one or more sheets of paper or paper-like material or comprises a body of an amorphous solid material; and/or   (iii) is resistant to combustion when exposed to temperatures up to 300° C.   
     
     
         41 . (canceled) 
     
     
         42 . (canceled) 
     
     
         43 . (canceled)