Aerosol provision systems and articles for use therein

Abstract

The invention relates to aerosol provision systems configured to heat an article (11), wherein the article comprises a first region (1) comprising a first aerosol-generating material (3) and a second region (2) comprising a second aerosol-generating material (4). The invention also relates to articles for an aerosol provision system, the articles comprising a first aerosol-generating material and a second aerosol-generating material. The invention also relates to uses of the systems and articles.

1 . An aerosol provision system comprising an aerosol provision device and an article,
 wherein the article comprises a first region comprising a first aerosol-generating material and a second region comprising a second aerosol-generating material,   wherein the second aerosol-generating material has a greater density than the first aerosol-generating material, and   wherein the device comprises a heating system configured to heat the first region to a first peak temperature and to heat the second region to a second peak temperature, wherein the second region reaches the second peak temperature later than the first region reaches the first peak temperature.   
     
     
         2 . The aerosol provision system as claimed in  claim 1 , wherein the density of the second aerosol-generating material is at least about 25% higher than the density of the first aerosol generating material. 
     
     
         3 . The aerosol provision system as claimed in  claim 1 , wherein the first aerosol generating material has a density of from about 0.1 g/cm3 to about 1 g/cm3. 
     
     
         4 . The aerosol provision system as claimed in  claim 1 , wherein the second aerosol generating material has a density of from about 0.4 g/cm3 to about 2 g/cm3. 
     
     
         5 . The aerosol provision system as claimed in  claim 1 , wherein heating of the second region to the second peak temperature occurs later than the heating of the first region to the first peak temperature. 
     
     
         6 . The aerosol provision system as claimed in  claim 1 , wherein the second region is heated for a longer time period than the first region. 
     
     
         7 . The aerosol provision system as claimed in  claim 1 , wherein there is no overlap between the timing of the heating of the first and second regions. 
     
     
         8 . The aerosol provision system as claimed in  claim 1 , wherein the first peak temperature is from about 150° C. to about 350° C. 
     
     
         9 . The aerosol provision system as claimed in  claim 1 , wherein the first region is heated to the first peak temperature for a period of from about 10 seconds to about 300 seconds. 
     
     
         10 . The aerosol provision system as claimed in  claim 1 , wherein the second peak temperature is from about 150° C. to about 350° C. 
     
     
         11 . The aerosol provision system as claimed in  claim 1 , wherein the second region is heated to the second peak temperature for a period of from about 10 seconds to about 300 seconds. 
     
     
         12 . The aerosol provision system as claimed in  claim 1 , wherein the second peak temperature is from about 10 to about 100° C. higher than the first peak temperature. 
     
     
         13 . The aerosol provision system as claimed in  claim 1 , wherein the heating of the article provides a relatively constant release of volatile compounds into an inhalable medium. 
     
     
         14 . The aerosol provision system as claimed in  claim 1 , wherein the second region is heated to the second peak temperature after the first region has been heated to the first peak temperature. 
     
     
         15 . The aerosol provision system as claimed in  claim 1 , wherein the second region is heated to the second peak temperature after heating of the first region has ceased. 
     
     
         16 . The aerosol provision system as claimed in  claim 1 , wherein the second aerosol-generating material comprises extruded tobacco. 
     
     
         17 . The aerosol provision system as claimed in  claim 1 , wherein the second aerosol-generating material comprises beads. 
     
     
         18 . The aerosol provision system as claimed in  claim 1 , wherein the first aerosol-generating material comprises one or more tobacco material selected from the group consisting of lamina and reconstituted tobacco material. 
     
     
         19 . The aerosol provision system as claimed in  claim 1 , wherein at least one of the first and second aerosol-generating material comprises a combination of lamina and reconstituted tobacco material. 
     
     
         20 . The aerosol provision system as claimed in  claim 19 , wherein the lamina and reconstituted tobacco material are present in the aerosol-generating material in a ratio of from 1:4 to 4:1, by weight. 
     
     
         21 . The aerosol provision system as claimed in  claim 1 , wherein the first and second aerosol-generating materials have the same levels of a volatile compound. 
     
     
         22 . The aerosol provision system as claimed in  claim 21 , wherein the volatile compound is nicotine. 
     
     
         23 . The aerosol provision system as claimed in  claim 1 , wherein the release of a volatile compound from the first and second aerosol-generating material is at the same rate when the materials reach a given temperature. 
     
     
         24 . The aerosol provision system as claimed in  claim 1 , wherein the second region is configured to be downstream of the first region. 
     
     
         25 . The aerosol provision system as claimed in  claim 1 , wherein the first and second aerosol-generating materials are in distinct regions. 
     
     
         26 . The aerosol provision system as claimed in  claim 1 , wherein the first and second aerosol-generating materials are present in the article in a ratio of from 1:10 to 10:1, by weight. 
     
     
         27 . An article for an aerosol provision system, the article comprising a first aerosol-generating material and a second aerosol-generating material,
 wherein the second aerosol-generating material is in the form of discrete particles, or in the form of an agglomerated body of particles,   wherein the second aerosol-generating material has a greater density than the second aerosol-generating material.   
     
     
         28 . The article as claimed in  claim 27 , wherein the second aerosol-generating material comprises beads or pellets of aerosol-generating material. 
     
     
         29 . The article as claimed in  claim 27 , wherein the second aerosol-generating material is a compressed, extruded or moulded body of aerosol-generating material. 
     
     
         30 . (canceled) 
     
     
         31 . The article as claimed in  claim 27 , wherein the first aerosol-generating material and the second aerosol-generating material have the same nicotine content. 
     
     
         32 . The article as claimed in  claim 1 , wherein the first aerosol-generating material and second aerosol-generating material release nicotine at the same rate once heated to a given temperature. 
     
     
         33 . The article as claimed in  claim 27 , wherein the first aerosol-generating material is in the form of discrete particles, or in the form of an agglomerated body of particles. 
     
     
         34 . The article as claimed in  claim 33 , wherein the first aerosol-generating material comprises beads or pellets of aerosol-generating material, or is a compressed, extruded or moulded body of aerosol-generating material. 
     
     
         35 . The article as claimed in  claim 27 , the article comprising a first region comprising the first aerosol-generating material and a second region comprising the second aerosol-generating material. 
     
     
         36 . The article as claimed in  claim 35 , wherein the second region is configured to be downstream of the first region. 
     
     
         37 . (canceled) 
     
     
         38 . (canceled) 
     
     
         39 . (canceled)