JPWO2020128048A5 - - Google Patents

Claims (15)

An aerosol-generating article for producing an inhalable aerosol when heated, said aerosol-generating article comprising:
a rod of aerosol-generating substrate;
A hollow tubular segment downstream of said rod, said hollow tubular segment longitudinally aligned with said rod, said hollow tubular segment extending from said hollow tubular segment upstream end to said hollow tubular segment. a hollow tubular segment defining a recess extending all the way to the downstream end of the hollow tubular segment;
a mouthpiece segment downstream of said hollow tubular segment, said mouthpiece segment including a plug of filtering material and a mouth end recess downstream of said plug of filtering material; a segment;
a ventilation zone located less than 20 millimeters from the downstream end of the aerosol-generating article along the hollow tubular segment, the ventilation zone being defined by perforations formed through a peripheral wall of the hollow tubular segment. comprising one or more rows, said hollow tubular segment having a length of about 25 millimeters;
the ratio of the weight of said hollow tubular segment to the volume of said internal cavity defined by said hollow tubular segment is preferably less than 1 milligram per cubic millimeter;
An aerosol-generating article, wherein said rod of aerosol-generating substrate comprises at least an aerosol former, said rod of aerosol-generating substrate having an aerosol former content of at least about 12 percent on a dry weight basis. 2. The aerosol-generating article of claim 1, wherein said hollow tubular segment comprises a wrapper, said wrapper also surrounding said rod. 2. The aerosol generator of claim 1, wherein said hollow tubular segment comprises a tube formed from polymeric or cellulosic material, and said heated aerosol-generating article further comprises a wrapper surrounding said rod and said tube. Goods. 4. A ratio of the weight of the hollow tubular segment to the volume of the internal cavity defined by the hollow tubular segment is less than 0.2 milligrams per cubic millimeter. aerosol-generating articles. 5. The aerosol-generating article of any one of claims 1-4, wherein the hollow tubular segment has an equivalent inner diameter of at least about 5 millimeters at the location of the vent zone. 6. The aerosol-generating article of any one of claims 1-5, wherein the equivalent inner diameter of the hollow tubular segment is less than about 9 millimeters at the location of the vent zone. The mouthpiece segment includes a mouth-end hollow tube defining a mouth-end recess, the mouth-end hollow tube longitudinally aligned with the plug of filtering material to provide a filter for filtering the filter. 7. Arranged immediately downstream of a plug of material, said recess being open to the outside environment at said downstream end of said mouthpiece segment and said aerosol-generating article. The aerosol-generating article according to . The aerosol-generating article of any one of claims 1-7, wherein the hollow tubular segment has a peripheral wall thickness of less than about 1.5 millimeters. 9. The aerosol-generating article of any one of claims 1-8, wherein the RTD of the aerosol-generating article is from about 30 millimeters _H2O to about 90 millimeters _H2O . 10. Any one of claims 1 to 9, wherein the ratio between the weight of the hollow tubular segment and the volume of the internal cavity defined by the hollow tubular segment is preferably less than 0.5 milligrams per cubic millimeter. 10. The aerosol-generating article described in Section 1. 11. The aerosol-generating article of any one of claims 1-10, having a ventilation level of at least about 20 percent. The aerosol-generating article of any one of claims 1-11, wherein the distance between the ventilation zone and the upstream end of the hollow tubular segment is at least about 6 millimeters. 13. The method of claims 1-12, wherein the ratio of the distance between the vent zone and the upstream end of the hollow tubular segment to the equivalent inner diameter of the hollow tubular segment at the position of the vent zone is less than 4. An aerosol-generating article according to any one of the clauses. 14. The aerosol-generating article of any one of claims 1-13, wherein the outer diameter of the rod of the aerosol-generating substrate is from about 6 millimeters to about 8 millimeters. The ventilation zone includes two rows of perforations formed through the peripheral wall of the hollow tubular segment, the rows of perforations being longitudinally spaced from each other along the hollow tubular segment. The aerosol-generating article of any one of claims 1-14.