Smoking article with single radially-separated heat-conducting element

Abstract

A smoking article is provided, including a combustible heat source having opposed front and rear faces; an aerosol-forming substrate downstream of the rear face; and a single heat-conducting element overlying a rear portion of the combustible heat source and at least a front portion of the aerosol-forming substrate. The single heat-conducting element includes one or more layers of heat conductive material that are radially separated from the combustible heat source and the aerosol-forming substrate. The combustible heat source is either a blind combustible heat source or a non-blind combustible heat source, and the smoking article further includes a non-combustible substantially air impermeable barrier between the non-blind source and one or more airflow channels extending from the front face to the rear face of the non-blind source. The single heat-conducting element includes an outer layer of heat conductive material that is visible on the exterior of the smoking article.

1 . A smoking article, comprising:
 a combustible heat source having opposed front and rear faces;   an aerosol-forming substrate downstream of the rear face of the combustible heat source; and   a single heat-conducting element overlying a rear portion of the combustible heat source and at least a front portion of the aerosol-forming substrate, wherein the single heat-conducting element comprises one or more layers of heat conductive material and the one or more layers of heat conductive material are radially separated from the combustible heat source and the aerosol-forming substrate,   wherein the combustible heat source is either a blind combustible heat source or the combustible heat source is a non-blind combustible heat source, and the smoking article further comprises a non-combustible substantially air impermeable barrier between the non-blind combustible heat source and one or more airflow channels extending from the front face to the rear face of the non-blind combustible heat source, and   wherein the single heat-conducting element comprises an outer layer of heat conductive material that is visible on the exterior of the smoking article.   
     
     
         2 . The smoking article according to  claim 1 , wherein the one or more layers of heat conductive material are radially separated from the combustible heat source and the aerosol-forming substrate by one or more layers of heat insulative material. 
     
     
         3 . The smoking article according to  claim 1 , wherein the one or more layers of heat conductive material are radially separated from the combustible heat source and the aerosol-forming substrate by at least 50 microns. 
     
     
         4 . The smoking article according to  claim 1 , wherein the single heat-conducting element is formed of a laminate material comprising one or more layers of heat conductive material and one or more layers of heat insulative material. 
     
     
         5 . The smoking article according to  claim 4 , wherein the one or more layers of heat conductive material are radially separated from the combustible heat source and the aerosol-forming substrate by at least one of the one or more layers of heat insulative material. 
     
     
         6 . The smoking article according to  claim 4 , wherein the one or more layers of heat conductive material comprise a heat-reflective material. 
     
     
         7 . The smoking article according to  claim 6 , wherein the heat-reflective material reflects more than 50% of incident radiation. 
     
     
         8 . The smoking article according to  claim 1 , wherein the single heat-conducting element overlies an entire length of the aerosol-forming substrate. 
     
     
         9 . The smoking article according to  claim 8 , wherein the single heat-conducting element extends downstream beyond the aerosol-forming substrate. 
     
     
         10 . The smoking article according to  claim 1 , further comprising a non-combustible substantially air impermeable barrier between the rear face of the combustible heat source and the aerosol-forming substrate. 
     
     
         11 . The smoking article according to  claim 1 , further comprising one or more first air inlets around a periphery of the aerosol-forming substrate. 
     
     
         12 . The smoking article according to  claim 1 , wherein the aerosol-forming substrate abuts the rear face of the combustible heat source. 
     
     
         13 . The smoking article according to  claim 1 , wherein the aerosol-forming substrate is spaced apart from the rear face of the combustible heat source. 
     
     
         14 . The smoking article according to  claim 11 , further comprising one or more second air inlets between the rear face of the combustible heat source and the aerosol-forming substrate. 
     
     
         15 . The smoking article according to  claim 1 , further comprising one or more aerosol modifying agents downstream of the aerosol-forming substrate.