Abstract: An aerosol-generating article is provided for producing an inhalable aerosol upon heating, the article including: a mouthpiece assembly including first, second, and third tubes; and an aerosol-forming substrate, in which the first tube abuts a downstream end face of the second tube, and the third tube abuts an upstream end face of the second tube, an internal diameter of the second tube is smaller than an internal diameter of the first tube and of the third tube, the internal diameter of the first tube is between 3 mm and 8 mm, a ratio of the internal diameter of the first tube to the internal diameter of the second tube is between 1.2 and 5, a ratio of the internal diameter of the first tube to the internal diameter of the third tube is between 0.5 and 2, and the second tube is a cellulose acetate tube.

Abstract: An aerosol-generating article is provided for producing an inhalable aerosol upon heating, the article including: a rod of aerosol-generating substrate; a downstream section at a location downstream of the rod and including: a support element located immediately downstream of the rod and being in longitudinal alignment with the rod and including a first hollow tubular segment, and an aerosol cooling element immediately downstream of the support element and in longitudinal alignment with the support element and the rod, the aerosol-cooling element including a second hollow tubular segment; a ventilation zone at a location along the second hollow tubular segment; and an upstream section at a location upstream of the rod and including an upstream element positioned immediately upstream of the rod and having a resistance-to-draw (RTD) of less than 80 millimetres H2O, in which the article has a ventilation level of at least 10 percent.

Abstract: The present invention relates to a casting apparatus (101) for the production of a cast web (1) of a material containing alkaloids, said casting apparatus comprising: ?a casting box (10) having casting box walls including a first and a second opposite walls (12, 14), and adapted to contain a slurry (2); ?a movable support (20); ?a casting blade (70) adapted to cast the slurry contained in the casting box onto the movable support so as to form the cast web (1) of said material containing alkaloids; and ?a bar-like element (80, 180, 280, 380, 480) located inside the casting box (10) in contact with the slurry (2), the bar-like element being positioned at a first and at a second distance from the first and the second opposite walls (12, 14), respectively, so that the slurry (2) can flow around the bar-like element.