Aerosol-generating substrate comprising an oil additive

Abstract

A heated aerosol-generating article for producing an inhalable aerosol is provided, the article including a rod of aerosol-generating substrate formed of one or more sheets of a homogenised tobacco material, the material being formed of an agglomeration of particles of tobacco material and including between 1 percent and 10 percent by weight of a medium chain triglyceride oil, on a dry weight basis, the oil having a melting point below 18 degrees Celsius and including one or more triglycerides having at least two fatty acid chains with a chain length of between 6 and 12 carbon atoms, and the one or more sheets being selected from reconstituted tobacco sheet and cast leaf. A rod of aerosol-generating substrate, an aerosol-generating system, and a method of making a homogenised tobacco material for an aerosol-generating article are also provided.

1 .- 14 . (canceled) 
     
     
         15 . A heated aerosol-generating article for producing an inhalable aerosol, the heated aerosol-generating article comprising a rod of aerosol-generating substrate, wherein the rod of aerosol-generating substrate is formed of one or more sheets of a homogenised tobacco material, the homogenised tobacco material being formed of an agglomeration of particles of tobacco material and comprising between 1 percent by weight and 10 percent by weight of a medium chain triglyceride oil, on a dry weight basis, the medium chain triglyceride oil having a melting point below 18 degrees Celsius and comprising one or more triglycerides having at least two fatty acid chains with a chain length of between 6 and 12 carbon atoms, and wherein the one or more sheets of homogenised tobacco material are selected from reconstituted tobacco sheet and cast leaf. 
     
     
         16 . The heated aerosol-generating article according to  claim 15 , wherein the medium chain triglyceride oil has an iodine value of less than 2. 
     
     
         17 . The heated aerosol-generating article according to  claim 15 , wherein the medium chain triglyceride oil has a melting point below 15 degrees Celsius. 
     
     
         18 . The heated aerosol-generating article according to  claim 15 , wherein the medium chain triglyceride oil has a melting point below 10 degrees Celsius. 
     
     
         19 . The heated aerosol-generating article according to  claim 15 , wherein the medium chain triglyceride oil comprises at least 80 percent triglycerides having at least two fatty acid chains with a chain length of between 8 and 10 carbon atoms. 
     
     
         20 . The heated aerosol-generating article according to  claim 15 , wherein a total content of the medium chain triglyceride oil in the homogenised tobacco material is between 1 percent and 5 percent by weight, on a dry weight basis. 
     
     
         21 . The heated aerosol-generating article according to  claim 15 , wherein the homogenised tobacco material comprises at least 70 percent by weight tobacco, on a dry weight basis. 
     
     
         22 . The heated aerosol-generating article according to  claim 15 , wherein the homogenised tobacco material further comprises one or more aerosol formers. 
     
     
         23 . The heated aerosol-generating article according to  claim 22 , wherein the total content of aerosol former in the homogenised tobacco material is between 5 percent and 20 percent by weight, on a dry weight basis. 
     
     
         24 . The heated aerosol-generating article according to  claim 15 , wherein the homogenised tobacco material further comprises at least 1 percent by weight reinforcement fibres, on a dry weight basis. 
     
     
         25 . The heated aerosol-generating article according to  claim 15 , wherein the aerosol-generating substrate is a rod formed from a gathered sheet of the homogenised tobacco material. 
     
     
         26 . A rod of aerosol-generating substrate for a heated aerosol-generating article according to  claim 15 , the aerosol-generating substrate comprising a homogenised tobacco material comprising between 1 percent by weight and 10 percent by weight of a medium chain triglyceride oil, on a dry weight basis, the medium chain triglyceride oil having a melting point below 18 degrees Celsius and comprising one or more triglycerides having at least two fatty acid chains with a chain length of between 6 and 12 carbon atoms. 
     
     
         27 . An aerosol-generating system, comprising:
 an aerosol-generating device comprising a heating element; and   an aerosol-generating article for the aerosol-generating device, the aerosol-generating article comprising a rod of aerosol-generating substrate, wherein the rod of aerosol-generating substrate is formed of one or more sheets of a homogenised tobacco material, the homogenised tobacco material being formed of an agglomeration of particles of tobacco material and comprising between 1 percent by weight and 10 percent by weight of a medium chain triglyceride oil, on a dry weight basis, the medium chain triglyceride oil having a melting point below 18 degrees Celsius and comprising one or more triglycerides having at least two fatty acid chains with a chain length of between 6 and 12 carbon atoms,   wherein the one or more sheets of homogenised tobacco material are selected from reconstituted tobacco sheet and cast leaf.   
     
     
         28 . A method of making a homogenised tobacco material for an aerosol-generating article according to  claim 15 , the method comprising the steps of:
 forming an homogenised slurry comprising tobacco material, water, and a medium chain triglyceride oil having a melting point below 18 degrees Celsius and comprising one or more triglycerides having at least two fatty acid chains with a chain length of between 6 and 12 carbon atoms;   casting the homogenised slurry onto a moving belt; and   drying the cast slurry to form a sheet of homogenised tobacco material,   wherein the method is performed without any external heating of the slurry.