Abstract: An aerosol-generating article is provided for producing an inhalable aerosol upon heating, the article including: a rod of aerosol-generating substrate extending from a rod proximal end to a rod distal end upstream from the proximal end, the substrate an aerosol-former, an aerosol former content of the substrate being at least 10 percent on a dry weight basis; a downstream section located downstream of the rod; and a wrapper circumscribing the rod, the wrapper including a wrapping base material having a dry basis weight, in which a treated portion of the wrapper extending between the proximal and distal ends includes a flame retardant composition including flame retardant compounds, such that the treated portion has an overall dry basis weight greater than that of the wrapping base material, and in which the treated portion includes at least about 2 g/m2 of the flame retardant compounds of surface area of the treated portion.

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, the aerosol-generating substrate including at least an aerosol-former, in which the aerosol-generating substrate has an aerosol former content of at least about 10 percent on a dry weight basis; a downstream section at a location downstream of the rod of aerosol-generating substrate; and a wrapper circumscribing at least the rod of aerosol-generating substrate, in which a density of the aerosol-generating substrate is greater than about 300 milligrams per cubic centimeter, and in which the wrapper includes a flame retardant composition including one or more flame retardant compounds. A method of manufacturing an aerosol-generating article for generating an inhalable aerosol upon heating is also provided.

Abstract: An aerosol-generating article is provided for producing an inhalable aerosol upon heating, the article including: a rod of aerosol-generating substrate extending from a rod proximal end to a rod distal end upstream from the proximal end; a downstream section downstream of the rod; and a wrapper circumscribing at least the rod, the wrapper including a wrapping base material having a basis weight, at least a treated portion of the wrapper extending between the rod proximal and distal ends includes a flame retardant composition including one or more flame retardant compounds, such that the treated portion has an overall basis weight greater than the basis weight of the wrapping base material, and in which the treated portion extends over at least about 90 percent of an outer surface area of the rod. A method of manufacturing an aerosol-generating article for generating an inhalable aerosol upon heating is also provided.

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, the aerosol-generating substrate including at least 10 percent by weight of an aerosol former; and a filter segment formed of fibrous filtration material, the filter segment arranged in longitudinal alignment with the rod, in which the filter segment includes at least about 85 percent by weight based on a total weight of fibrous filtration material of a polyhydroxyalkanoate (PHA) polymer or copolymer, in which a resistance to draw (RTD) of the filter segment is between about 35 millimetres H2O and about 55 millimetres H2O, and in which a length of the filter segment is from about 4 millimetres to about 27 millimetres. A filter for an aerosol-generating article is also provided.

Abstract: An aerosol-generating article is provided, including: an aerosol-generating substrate; and a filter in axial alignment with the aerosol-generating substrate, the filter including at least one filter segment of filtration material formed of a plurality of fibres including a polyhydroxyalkanoate compound, in which the fibres have a denier per filament (dpf) of between 1.5 dpf and 2.7 dpf, in which a total denier of the fibres is between 25,000 and 40,000, and in which the at least one filter segment includes at least 20 percent by weight of the polyhydroxyalkanoate compound. A filter for an aerosol-generating article is also provided.

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, the aerosol-generating substrate including at least 12 percent by weight of an aerosol former, and the rod having a length of from 5 millimetres to 50 millimetres; and a hollow tube segment with a support element and including fibrous filtration material, the hollow tube segment disposed immediately downstream of the rod and in longitudinal alignment with the rod, in which the fibrous filtration material includes fibres including a polyhydroxyalkanoate (PHA) polymer or copolymer, and in which the hollow tube segment includes at least about 25 percent by weight of the PHA polymer or copolymer. A system including an aerosol-generating device and the aerosol-generating article is also provided.

Abstract: An aerosol-generating article is provided, including: an aerosol-generating substrate; and a filter in axial alignment with the aerosol-generating substrate, the filter including at least one filter segment of filtration material formed of a plurality of fibres including a polyhydroxyalkanoate compound, in which the fibres have a denier per filament (dpf) of between 5.0 dpf and 12.0 dpf, in which the filter segment includes at least 20 percent by weight of the polyhydroxyalkanoate compound, and in which a resistance to draw (RTD) of the filter segment is between 10 millimetres H2O and 25 millimetres H2O. A filter for an aerosol-generating article is also provided.

Abstract: An aerosol-generating article is provided, including: an aerosol-generating substrate; and a filter in axial alignment with the aerosol-generating substrate, the filter including at least one filter segment of filtration material formed of a plurality of fibres including a polyhydroxyalkanoate compound, in which the fibres provide a total external surface area within the filter segment of between 0.12 square metres per gram and 0.28 square metres per gram, and in which the at least one filter segment includes at least 20 percent by weight of the polyhydroxyalkanoate compound. A filter for an aerosol-generating article is also provided.

Abstract: An aerosol-generating article for producing an inhalable aerosol upon heating is provided, including: a rod of aerosol-generating substrate; a mouthpiece segment including a plug; a tubular support element between the rod and the segment and being in longitudinal alignment therewith, arranged immediately downstream of the rod, defining an airflow conduit, and including a cylindrical peripheral wall, a portion of the element projecting inwardly and delimited at an upstream end by a surface spaced from a transverse plane tangent to an upstream end surface of the wall; and a recess defined by the element and being between a downstream end surface of the rod and an upstream end surface of the element, extending longitudinally from a downstream end of the recess to the segment, being less than 10 percent of a length of the article, and a cross-sectional area of the recess changing along a length of the recess.

Abstract: An aerosol-generating article defining a longitudinal direction extending between an upstream end and a downstream end is provided, including: a plug of aerosol-forming substrate at the upstream end; a hollow tubular support element positioned immediately downstream of the plug; and a filter segment at the downstream end of the article and positioned immediately downstream of the element, the article having a length extending in the longitudinal direction, the plug having a length extending in the longitudinal direction, the element having a length extending in the longitudinal direction between a first end of the element and a second end of the element, a ratio of the length of the element to the length of the article is between 0.3 to 1 and 0.5 to 1, and a ratio of the length of the plug to the length of the element is between 0.5 to 1 and 0.8 to 1.

Abstract: An aerosol-generating article having an upstream end and a downstream end is provided, the article defining a longitudinal direction between the upstream end and the downstream end, the article including: an aerosol-forming substrate; a hollow tubular support element disposed downstream of the substrate and extending along the longitudinal direction, defining an opening extending in the longitudinal direction and configured for aerosol to flow towards the downstream end, a filter disposed downstream of the hollow tubular support element in the longitudinal direction, a hardness of the article at the hollow tubular support element is at least about 80%, and the hardness of the article at the hollow tubular support element is determined by means of the DD60A Test. An aerosol-generating system is also provided.

Abstract: An aerosol generating article (10) comprises: an aerosol generating substrate (12); a filter (14) in axial alignment with the aerosol generating substrate, the filter (14) comprising at least one water dispersible filter component (16), wherein the filter component is water dispersible under the test conditions of EN 14987:2006; and a tipping wrapper (20) wrapped around the filter (14) and at least a portion of the aerosol generating substrate (12).

Abstract: There is provided an aerosol-generating article (10) comprising an aerosol-generating substrate (12) and a filter (14) in axial alignment with the aerosol-generating substrate (12). The filter (14) comprises at least one segment of filtration material formed of one or more sheets of a fibrous paper-like material. The fibrous paper-like material comprises a combination of hydrophobic fibres and hydrophilic fibres such that the fibrous paper-like material has a water contact angle as measured in accordance with TAPPI/ANSI T 558 om-15 greater than 90 degrees. Further, the fibrous paper material has a biodegradability in aqueous medium as tested in accordance with ISO 14851 (2005) of at least 90 percent of the maximum degradation of a cellulose reference item within 56 days of testing. In addition, the hydrophobic fibres comprise hydrophobic viscose fibres.

Abstract: A smoking article includes a smokable material and a filter comprising filtration material that is downstream of the smokable material. The filtration material comprises a sheet of hydrophobic cellulosic material with hydrophobic groups covalently bonded to the cellulosic material.

Abstract: An aerosol generating article (10) comprises: an aerosol generating substrate (12); a filter (14) in axial alignment with the aerosol generating substrate, the filter (14) comprising at least one water dispersible filter component (16), wherein the filter component is water dispersible under the test conditions of EN 14987:2006; and a tipping wrapper (20) wrapped around the filter (14) and at least a portion of the aerosol generating substrate (12).

Abstract: A smoking article comprises a tobacco rod and a filter component. The filter component comprises a first filter segment of filtration material having a diameter measured perpendicular to a longitudinal direction of the filter, and a flow restrictor embedded in the filter segment. At least one cross sectional dimension of the flow restrictor, measured in a transverse direction of the filter segment, is at least about 50 percent of the diameter of the filter segment. The flow restrictor is made from an air-impermeable, non-compressible and water-soluble or water-dissolvable material. Further, the flow restrictor comprises a composition that promotes degradation of the filtration material.

Abstract: A smoking article includes a smokable material and a filter comprising filtration material that is downstream of the smokable material. The filtration material comprises a sheet of hydrophobic cellulosic material with hydrophobic groups covalently bonded to the cellulosic material.

Abstract: A smoking article comprises a tobacco rod and a filter component. The filter component comprises a first filter segment of filtration material having a diameter measured perpendicular to a longitudinal direction of the filter, and a flow restrictor embedded in the filter segment. At least one cross sectional dimension of the flow restrictor, measured in a transverse direction of the filter segment, is at least about 50 percent of the diameter of the filter segment. The flow restrictor is made from an air-impermeable, non-compressible and water-soluble or water-dissolvable material. Further, the flow restrictor comprises a composition that promotes degradation of the filtration material.

Abstract: There is provided a smoking article (100) comprising a wrapped rod of smokable material (101);and a filter (102) comprising one or more filter segments(103), wherein the filter is in axial alignment with the wrapped rod of smokable material (101) and abuts the wrapped rod of smokable material (101) at an interface(105). A tipping wrapper (106) circumscribes at least a portion of the filter (102) and attaches the filter (102) to the wrapped rod of smokable material )101). The smoking article (100) further comprises an over-tipping band (107) circumscribing the filter (102) and overlying the tipping wrapper (106) at the upstream end of the filter (102) such that the over-tipping band (107) overlies the interface (105) between the wrapped rod of smokable material and the filter. The over-tipping band (107) is formed of an air impermeable sheet of a non-paper cellulosic material obtained by processing cellulose to form regenerated cellulose fibres.