Abstract: A method for enhancing hardness of a filter for a smoking article includes disposing a plug wrap about filter material; and applying a hardness-enhancing coating composition to the plug wrap after the plug wrap has been disposed about the filter material to enhance the hardness of the filter.

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: An aerosol-generating article for producing an inhalable aerosol upon heating is provided, the aerosol-generating article including: a rod of aerosol-generating substrate; and a downstream section arranged downstream of the rod of aerosol-generating substrate and in axial alignment with the rod of aerosol-generating substrate, the downstream section including one or more downstream elements, the aerosol-generating article being arranged such that a center of mass of the aerosol-generating article is at least 60 percent of the way along a length of the aerosol-generating article from a downstream end.

Abstract: An aerosol-generating article for producing an inhalable aerosol upon heating is provided, the article including: a rod of aerosol-generating substrate; a mouthpiece element having a length L1 and including at least one mouthpiece filter segment formed of a fibrous filtration material; and an intermediate hollow section between the rod and the mouthpiece element, the intermediate hollow section having a length L2 and including: an aerosol-cooling element downstream of the rod and including a hollow tubular segment defining a longitudinal cavity providing an unrestricted flow channel, a length of the aerosol-cooling element being less than 10 millimetres, and a support element between the aerosol-cooling element and the rod, in which an upstream end of the aerosol-cooling element abuts a downstream end of the support element, and in which the length L1 of the mouthpiece element is at least 0.4 times the length L2 of the intermediate hollow section.

Abstract: An aerosol-generating article is provided for producing an inhalable aerosol upon heating, the aerosol-generating article including: a rod of aerosol-generating substrate including a gel composition, the gel composition including at least one gelling agent, at least one of an alkaloid compound, and a cannabinoid compound, and at least 50 percent by weight of an aerosol former; an upstream element upstream of the rod of aerosol-generating substrate and abutting the upstream end of the rod of aerosol-generating substrate, in which a resistance-to-draw (RTD) of the upstream element is between 5 millimetres H2O and 80 millimetres H2O; and a downstream section arranged downstream of the rod of aerosol-generating substrate and in axial alignment with the rod of aerosol-generating substrate, the downstream section including one or more downstream elements.

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 having an internal diameter (DFTS), and an aerosol cooling element positioned immediately downstream of the support element and in longitudinal alignment with the support element and the rod and including a second hollow tubular segment having an internal diameter (DSTS); and a ventilation zone at a location along the second segment, in which the DSTS of the second segment is greater than the DFTS of the first segment, a ratio between the DSTS of the second segment and the DFTS of the first segment being at least about 1.25.

Abstract: An aerosol-generating article (10) includes an aerosol forming substrate (20) and a filter (30) downstream of the substrate. The filter comprises filter material comprising filaments having a linear density of about 4 denier or greater. The filter has a resistance to draw of less than 130 mmWG. Preferably, the filter has a resistance to draw of 90 mmWG or less. More preferably, the filter has a resistance to draw of 70 mmWG or less. Preferably, the density of the filter material is about 0.12 g/cm3 or greater.

Abstract: An aerosol-generating article (10) includes an aerosol forming substrate (20) and a filter (30) downstream of the substrate. The filter comprises filter material having filaments that are distributed throughout a transverse cross section of the filter. The filter comprises from about 7.5% by weight to about 11.5% by weight of plasticizer or from about 10.5% by weight to about 15% by weight of plasticizer. The filters may be hard, while maintaining suitable resistance to draw.

Abstract: An aerosol-generating article (10) includes an aerosol forming substrate (20) and a filter (30) downstream of the substrate. The aerosol-generating article has an average radial hardness of 95.5% or greater when measured around the filter. The filter has a resistance to draw of 70 mmWG or less.

Abstract: A method for enhancing hardness of a filter (30) for a smoking article (10) includes disposing a plug wrap (60) about filter material; and applying a hardness-enhancing coating composition to the plug wrap after the plug wrap has been disposed about the filter material to enhance the hardness of the filter.