Smokable rod for a cigarette

Abstract

A smokable rod for a smoking article, such as a cigarette, possesses a co-axial or concentric construction. A longitudinally extending inner core of tobacco cut filler is positioned within a smokable rod. The outer material that circumscribes the inner core in an annular fashion is composed of a tobacco material treated with an optional burn suppressing agent, and the outer material acts as a substrate for an aerosol forming material. A preferred aerosol forming material is glycerin. An outer paper wrapper circumscribes the length of the smokable rod, and another paper wrapping material also can circumscribe the inner core material. In use, one end of the smokable rod is lit. When the opposite end of the smokable rod is drawn upon, an aerosol composed of tobacco smoke, thermal decomposition products of tobacco, and volatilized aerosol forming material, is provided. Alternatively, a smokable rod can be provided by positioning the tobacco cut filler in the outer annular region, and by constructing the inner core portion using the tobacco material treated with aerosol forming material and an optional burn suppressing agent. Alternatively, a smokable rod possesses a single blend of smokable materials; at least a portion the smokable material being a tobacco material carrying a relatively high amount of aerosol forming material; and optionally at least a portion of the smokable material being in intimate contact with a burn suppressing agent. A filtered cigarette can be produced by attaching a filter element to one end of any of those smokable rods.

1 . A smokable rod for a cigarette comprising: 
 (a) a lighting end and a mouth end;    (b) an inner portion incorporating a smokable material composed predominantly of tobacco and aerosol forming material; the aerosol forming material in intimate contact with a processed tobacco material that is processed such that at least a portion of a solvent soluble portion of the tobacco material is removed therefrom and such that the processed tobacco material is a substrate for the aerosol forming material; and    (c) an outer wrapping material circumscribing the inner portion.    
     
     
         2 . The rod of  claim 1  having a cylindrical shape, the rod having a longitudinally extending outer surface, the outer wrapping material providing the longitudinally extending outer surface, and the lighting end and mouth end each being open to expose the inner portion.  
     
     
         3 . The rod of  claim 1  or  2  having a mouth end piece attached to the mouth end thereof.  
     
     
         4 . The rod of  claim 1  or  2  wherein the aerosol forming material includes glycerin.  
     
     
         5 . The rod of  claim 1  or  2  wherein the outer wrapping material is composed of paper.  
     
     
         6 . The rod of  claim 1  or  2  wherein the outer wrapping material exhibits an inherent porosity of at least about 15 CORESTA units.  
     
     
         7 . The rod of  claim 1  or  2  wherein essentially all of the smokable tobacco material is composed of tobacco in cut filler form.  
     
     
         8 . The rod of  claim 1  or  2  wherein essentially all of the smokable tobacco material is composed of tobacco laminae, processed tobacco, or a blend thereof.  
     
     
         9 . The rod of  claim 7  wherein at least a portion of the tobacco material is cased and/or top dressed.  
     
     
         10 . The rod of  claim 8  wherein the processed tobacco is composed of essentially all tobacco.  
     
     
         11 . The rod of  claim 1  or  2  wherein the aerosol forming material is present within the smokable rod in an amount of at least about 5 percent, based on the dry weight of the tobacco material and aerosol forming material within the smokable rod.  
     
     
         12 . The rod of  claim 1  or  2  wherein the aerosol forming material is present within the smokable rod in an amount of at least about 10 percent, based on the dry weight of the tobacco material and aerosol forming material within the smokable rod.  
     
     
         13 . The rod of  claim 1  or  2  wherein the aerosol forming material is present within the smokable rod in an amount of at least about 15 percent, based on the dry weight of the tobacco material and aerosol forming material within the smokable rod.  
     
     
         14 . The rod of  claim 1  or  2  wherein the aerosol forming material is present within the smokable rod in an amount of at least about 20 percent, based on the dry weight of the tobacco material and aerosol forming material within the smokable rod.  
     
     
         15 . The rod of  claim 1  or  2  further including aerosol forming material that has been applied to at least a portion of the smokable material in the form of a spray.  
     
     
         16 . The rod of  claim 1  or  2  wherein a portion of the smokable material further includes a material composed primarily of aerosol forming material.  
     
     
         17 . A smokable rod for a cigarette comprising: 
 (a) a lighting end and a mouth end;    (b) smokable material composed primarily of tobacco material and aerosol forming material;    (c) at least a portion of the tobacco material acting as a substrate for the aerosol forming material; and    (e) a wrapping material circumscribing the smokable material, the wrapping material having an inherent porosity of at least about 15 CORESTA units.    
     
     
         18 . The rod of  claim 17  having a cylindrical shape, the rod having a longitudinally extending outer surface, the outer wrapping material providing the longitudinally extending outer surface, and the lighting end and mouth end each being open to expose the inner portion.  
     
     
         19 . The rod of  claim 17  or  18  having a mouth end piece attached to the mouth end thereof.  
     
     
         20 . The rod of  claim 17  or  18  wherein the aerosol forming material includes glycerin.  
     
     
         21 . The rod of  claim 17  or  18  wherein the outer wrapping material is composed of paper.  
     
     
         22 . The rod of  claim 17  or  18  wherein the outer wrapping material exhibits an inherent porosity of at least about 20 CORESTA units.  
     
     
         23 . The rod of  claim 17  or  18  wherein essentially all of the smokable tobacco material is composed of tobacco in cut filler form.  
     
     
         24 . The rod of  claim 17  or  18  wherein essentially all of the smokable tobacco material is composed of tobacco laminae, processed tobacco, or a blend thereof.  
     
     
         25 . The rod of  claim 23  wherein at least a portion of the tobacco material is cased and/or top dressed.  
     
     
         26 . The rod of  claim 24  wherein the processed tobacco is composed of essentially all tobacco.  
     
     
         27 . The rod of  claim 17  or  18  wherein the aerosol forming material is present within the smokable rod in an amount of at least about 5 percent, based on the dry weight of the tobacco material and aerosol forming material within the smokable rod.  
     
     
         28 . The rod of  claim 17  or  18  wherein the aerosol forming material is present within the smokable rod in an amount of at least about 10 percent, based on the dry weight of the tobacco material and aerosol forming material within the smokable rod.  
     
     
         29 . The rod of  claim 17  or  18  wherein the aerosol forming material is present within the smokable rod in an amount of at least about 15 percent, based on the dry weight of the tobacco material and aerosol forming material within the smokable rod.  
     
     
         30 . The rod of  claim 17  or  18  wherein the aerosol forming material is present within the smokable rod in an amount of at least about 20 percent, based on the dry weight of the tobacco material and aerosol forming material within the smokable rod.  
     
     
         31 . The rod of  claim 17  or  18  including aerosol forming material that has been applied to at least a portion of the smokable material in the form of a spray.  
     
     
         32 . The rod of  claim 17  or  18  wherein a portion of the smokable material includes a material composed primarily of aerosol forming material.