| 摘要 |
The present invention provides an improved aerosol generation smoking article 1. The smoking article 1 comprises a heating unit 2, a catalytic unit 3 in gas flow communication with the heating unit 2, an alkali source means 4, in the form of a cylindrical body of paper loaded with ammomium carbonate, an aerosol generation means in the form of an aerosol element 5, comprising a cylindrical body 12 of cut tobacco as a nicotine source means wrapped in an impervious wrapper 13 and an annular layer 14 of particulate substrate material loaded with propylene glycol and glycerol, a mixing space 17 at the rearward end of the aerosol element 5 and a velocity accelerating orifice 20 located intermediate the mixing space 17 and a distribution space 18. A mouthpiece element 6 of porous cellulose acetate is provided at the mouth end of the smoking article 1 adjacent the distribution space 18. Such an arrangement provides an enhanced release of nicotine and propylene glycol/glycerol from their respective sources, the velocity accelerating orifice 20 acting as a capillary press causing the nicotine vapour passing from the mixing space to condense into combination with particles of the polypropylene glycol and glycerol aerosol, thus to provide an aerosol comprising nicotine to the smoker. |
