Aerosol generation

Abstract

Provided herein is a heat-not-burn article including an aerosol generating medium and a filter. The filter contains one or more crushable capsules. In use, the aerosol generating medium is heated without being combusted, and the capsule is exposed to a temperature of about 30 to 100° C. During the exposure the structural integrity of the capsule is not compromised such that the capsule can be crushed by the user before, during or after heating.

1 . A heat-not-burn article comprising:
 an aerosol generating medium; and   a filter, the filter containing one or more crushable capsules,   wherein, in use, the aerosol generating medium is heated without being combusted, and the one or more crushable capsules are exposed to a temperature of about 30-100° C. during which exposure a structural integrity of the one or more crushable capsules is not compromised, such that the one or more crushable capsules can be crushed by the user before, during or after heating.   
     
     
         2 . The heat-not-burn article according to  claim 1 , wherein, in use, the aerosol generating medium generates a humid aerosol and the one or more crushable capsules are exposed to at least 12 mg of water. 
     
     
         3 . The heat-not-burn article according to  claim 1 , wherein the one or more crushable capsules have a core-shell structure, the core comprising a liquid and the shell encapsulating the core, and wherein the shell comprises 5-90% by weight based on a total capsule shell weight of a gelling agent, wherein the gelling agent comprises carrageenan. 
     
     
         4 . The heat-not-burn article according to  claim 1 , wherein the aerosol generating medium comprises an aerosol generating agent. 
     
     
         5 . The heat-not-burn article according to  claim 4 , wherein the aerosol generating medium comprises at least 10% by weight of an aerosol generating agent based on a total weight of the aerosol generating medium. 
     
     
         6 . The heat-not-burn article according to  claim 1 , wherein the aerosol generating medium comprises a tobacco material. 
     
     
         7 . The heat-not-burn article according to  claim 1 , wherein the aerosol generating medium comprises an aerosol generating agent and a tobacco material, and wherein the aerosol generating agent and the tobacco material are provided in one of: a same portion of the aerosol generating medium, or in separate sections of the aerosol generating medium. 
     
     
         8 . The heat-not-burn article according to  claim 1 , wherein the one or more capsules fill about 5-30% v/v of the filter. 
     
     
         9 . The heat-not-burn article according to  claim 1 , wherein the filter comprises 70-95% v/v of a filter material. 
     
     
         10 . The heat-not-burn article according to  claim 9 , wherein at least one of:
 the filter material has an average melting point of at least about 150° C., or   the filter material has an average thermal conductivity of at least 0.130 W/mK.   
     
     
         11 . (canceled) 
     
     
         12 . The heat-not-burn article according to  claim 1 , wherein the filter comprises a wrapper that circumscribes other filter components. 
     
     
         13 . The heat-not-burn article according to  claim 3 , wherein the shell of the one or more crushable capsules comprises 5-60% by weight based on a total capsule shell weight of carrageenan as a gelling agent. 
     
     
         14 . (canceled) 
     
     
         15 . The heat-not-burn article according to  claim 3 , wherein the shell of the one or more crushable capsules additionally comprises at least one of a plasticizer or a carbohydrate. 
     
     
         16 . The heat-not-burn article according to  claim 1 , wherein the one or more crushable capsules have a crush strength, before heating is initiated, of from about 0.8 kp to about 3.5 kp. 
     
     
         17 . The heat-not-burn article according to  claim 3 , wherein the core of the one or more crushable capsules comprises a flavorant. 
     
     
         18 . A heat-not-burn assembly comprising the heat-not-burn article according to  claim 1  and a heater. 
     
     
         19 . The heat-not-burn assembly according to  claim 18 , wherein the one or more crushable capsules are disposed at least about 25 mm from the heater. 
     
     
         20 . The heat-not-burn assembly according to  claim 18 , wherein:
 the heater comprises a combustible fuel source which is arranged such that, on ignition, the combustible fuel source heats but does not burn the aerosol generating medium of the heat-not-burn article, or   the heater is a device into which the heat-not-burn article is at least partially inserted, such that in use, the aerosol generating medium is heated but not burned.   
     
     
         21 . (canceled) 
     
     
         22 . The heat-not-burn assembly according to  claim 18 , configured such that the one or more crushable capsules are exposed to a temperature of about 30-100° C. 
     
     
         23 . (canceled) 
     
     
         24 . The heat-not-burn assembly according to  claim 18 , configured to expose the aerosol forming medium to at least 200° C. for at least 50% of a heating period.