Smoking article aerosol generating means

Abstract

The invention relates to a smoking article ( 1 ) having a high proportion of non-combustible, inorganic material and a relatively low level of visible sidestream. The smoking article comprises a substantially non-combustible, wrapper ( 5 ) which extends along the full length of the smoking material rod and enwraps a combustible fuel source ( 6 ) and aerosol generating means ( 7 ), both of which extend substantially along the length of the smoking material rod. Various suitable fuel source system and aerosol generating systems are described. The article has a visible burn line which advances along the article and produces an ash which can be removed by the smoker in the normal way.

1 . A smoking article aerosol generating means comprising 95-30% inorganic, non-combustible binder, 45-90% non-combustible inorganic filler material and 5-30% aerosol forming means.  
   
   
       2 . A smoking article aerosol generating means comprising non-combustible inorganic filler matter, aerosol forming means and at least one inorganic binder selected from the group consisting of potassium silicate and magnesium oxide in combination with potassium silicate, or cement.  
   
   
       3 . A smoking article aerosol generating means according to claims  1  or  2 , wherein the non-combustible inorganic filler material is at least one selected from the group consisting of perlite, vermiculite, diatomaceous earth, colloidal silica, chalk, magnesium oxide, magnesium sulphate, magnesium carbonate, and other low density, non-combustible inorganic filler materials.  
   
   
       4 . A smoking article aerosol generating means according to claims  1  or  2 , wherein the aerosol forming means comprises one or more of polyhydric alcohols, esters, or high boiling point hydrocarbons.  
   
   
       5 . A smoking article aerosol generating means according to  claim 3 , wherein the aerosol forming means comprises one or more of polyhydric alcohols, esters, or high boiling point hydrocarbons.  
   
   
       6 . A smoking article aerosol generating means according to  claim 5 , wherein the aerosol forming means is one or more of glycerol, propylene glycol, triethylene glycol, triethyl citrate or triacetin.  
   
   
       7 . A smoking article aerosol generating means according to  claim 5 , wherein the organic binder is selected from one or more of the classes of cellulose derivatives, cellulose ethers, alginic binders, gums, gels, pectins or starches.  
   
   
       8 . A smoking article aerosol generating means according to  claim 7 , wherein the organic binder is one or more of sodium carboxymethyl cellulose, methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, ammonium alginate, sodium alginate, sodium calcium alginate, calcium ammonium alginate, potassium alginate, magnesium alginate, triethanol-amine alginate, propylene glycol alginate, aluminum alginate, copper alginate, zinc alginate, silver alginate, gum Arabic, gum ghatzi, gum tragacanth, Karaya gum, locust bean gum, acacia gum, guar gum, quince seed gum, xanthan gum; agar, agarose, carregeenans, fucoidan or furcelleran.  
   
   
       9 . A smoking article aerosol generating means according to claims  1  or  2 , wherein the aerosol generating means comprises an expansion medium.  
   
   
       10 . A smoking article aerosol generating means according to claims  1  or  2 , wherein the aerosol generating means comprises flavouring agents.