Sheet of a material containing alkaloids

Abstract

The present invention relates to a multi-layered sheet of a material containing alkaloids comprising:—a first layer comprising a substrate sheet including fibres having a mean fibre length comprised between about 1 millimetres and about 5 millimetres, the first layer defining a first surface and a second surface;—a second layer comprising a mixture of: # a powder of the material containing alkaloids, the powder having a size comprised between about 8 micrometers and about 200 micrometers; # water; # a binder; # an aerosol former; the second layer being applied to the first surface of the substrate sheet, and wherein the binder is comprised in an amount comprised between about 0 percent and about 1 percent of the total weight of the multi-layered sheet of material containing alkaloids.

1 - 14 . (canceled) 
     
     
         15 . A multi-layered sheet of a material containing alkaloids comprising:
 a first layer comprising a substrate sheet including fibres having a mean fibre length comprised between about 1 millimetres and about 5 millimetres, the first layer defining a first surface and a second surface;   a second layer being applied to the first surface of the substrate sheet, the second layer comprising a mixture of:
 a powder of the material containing alkaloids, the powder having a size comprised between about 8 micrometers and about 200 micrometers; 
 water; 
 a binder in an amount comprised between about 0 percent and about 1 percent of the total weight of the multi-layered sheet of material containing alkaloids; and 
 an aerosol former in an amount comprised between about 2.9 percent and about 8.5 percent of the total weight of the multi-layered sheet of material containing alkaloids or of the sheet of a composite material containing alkaloids. 
   
     
     
         16 . The multi-layered sheet of a material containing alkaloids according to  claim 15 , wherein the first layer is partly impregnated with the second layer. 
     
     
         17 . The multi-layered sheet of material containing alkaloids according to  claim 15 , comprising a third layer, the third layer comprising a mixture of:
 a powder of the material containing alkaloids, the powder having a size comprised between about 8 micrometers and about 200 micrometers;   water;   a binder;   an aerosol former;   the third layer being applied to the second surface of the substrate sheet.   
     
     
         18 . A sheet of a composite material containing alkaloids comprising:
 a substrate sheet including fibres having a nominal average fibre length comprised between about 1 millimetres and about 5 millimetres and defining a first surface and a second surface;   the substrate sheet being impregnated with a mixture of:
 a powder of the material containing alkaloids, the powder having a size comprised between about 8 micrometers and about 200 micrometers; 
 water; 
 a binder in an amount comprised between about 0 percent and about 1 percent of the total weight of the sheet of a composite material containing alkaloids; and 
 an aerosol former in an amount comprised between about 2.9 percent and about 8.5 percent of the total weight of the multi-layered sheet of material containing alkaloids or of the sheet of a composite material containing alkaloids. 
   
     
     
         19 . The multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids according to  claim 15 , comprising the powder of the material containing alkaloids in an amount comprised between about 40 percent and about 80 percent of the total weight of the multi-layered sheet of material containing alkaloids or of the sheet of a composite material containing alkaloids. 
     
     
         20 . The multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids according to  claim 15 , comprising water in an amount comprised between about 7 percent and about 15 percent of the total weight of the multi-layered sheet of material containing alkaloids or of the sheet of a composite material containing alkaloids. 
     
     
         21 . The multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids according to  claim 15 , comprising fibres other than the fibres of the material containing alkaloids in an amount comprised between about 2 percent and about 5 percent of the total weight of the multi-layered sheet of material containing alkaloids or of the sheet of a composite material containing alkaloids. 
     
     
         22 . The multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids according to  claim 15 , wherein the multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids has a thickness comprised between about 150 micrometers and about 400 micrometers. 
     
     
         23 . The multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids according to  claim 15 , wherein the multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids has a width comprised between about 0.1 meters and about 2.0 meters. 
     
     
         24 . The multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids according to  claim 15 , wherein the powder of the material containing alkaloids comprises tobacco powder. 
     
     
         25 . The multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids according to  claim 15 , wherein the substrate sheet including fibres comprises cellulose fibres. 
     
     
         26 . The multi-layered sheet of material containing alkaloids or the sheet of a composite material containing alkaloids according to  claim 15 , wherein the substrate sheet including fibres comprises fibres derived from hemp, kenaf, bamboo, wood, cotton, or silk. 
     
     
         27 . Aerosol-generating article, comprising a portion of the multi-layered sheet of material containing alkaloids or of the sheet of the composite material containing alkaloids according to  claim 15 .