JPWO2021170677A5 - - Google Patents

Claims (14)

An aerosol-generating article for producing an inhalable aerosol upon heating, the article comprising:
an aerosol-generating base rod;
a downstream section located downstream of the rod of the aerosol-generating substrate, the downstream section comprising an aerosol cooling element longitudinally aligned with the rod of the aerosol-generating substrate;
the aerosol cooling element comprises a hollow tubular segment defining a cavity extending entirely from an upstream end of the hollow tubular segment to a downstream end of the hollow tubular segment;
the aerosol-generating article further comprises a ventilation zone at a location along the hollow tubular segment, the hollow tubular segment having a length of less than about 10 millimeters;
The volumetric ratio of ventilation airflow entering the aerosol-generating article through the ventilation zone at the location along the hollow tubular segment to the sum of the airflow from the rod of the aerosol-generating substrate and the ventilation airflow is about An aerosol-generating article that is between 25 percent and about 45 percent. The aerosol-generating article of claim 1, further comprising an elongate susceptor longitudinally disposed within the aerosol-generating substrate. The aerosol-generating article of claim 1 or 2, further comprising an upstream section located upstream of the rod of the aerosol-generating substrate, the upstream section comprising an upstream element located immediately upstream of the rod of the aerosol-generating substrate. . 4. The aerosol-generating article of claim 3, wherein the upstream element has a resistance to withdrawal (RTD) of less than about 40 millimeters _H2O . The downstream section further comprises a support element located upstream of the aerosol cooling element and immediately downstream of the rod of the aerosol generating substrate, the support element being longitudinally aligned with the rod. , the aerosol-generating article according to any one of claims 1 to 4. An aerosol-generating article according to any preceding claim, wherein the downstream section further comprises a mouthpiece element located downstream of the aerosol cooling element. 7. The aerosol generating article of claim 6, wherein the mouthpiece element has an RTD of less than about 15 millimeters _H2O . An aerosol-generating article according to any preceding claim, wherein the hollow tubular segment has a length of at least about 5 millimeters. The aerosol-generating article of any one of claims 1-8, wherein the ratio of the length of the hollow tubular segment to the overall length of the aerosol-generating article is less than about 0.3. The aerosol-generating article of any one of claims 1-9, wherein the ratio of the length of the hollow tubular segment to the length of the rod of the aerosol-generating article is less than about 0.9. The aerosol-generating article of any one of claims 1-10, wherein the peripheral wall of the hollow tube segment has a thickness of less than about 2500 micrometers. the volume of the vent airflow entering the aerosol-generating article through the vent zone at the location along the hollow tubular segment and the sum of the airflow from the rod of the aerosol-generating substrate and the vent airflow; The aerosol-generating article of any one of claims 1-11, wherein the ratio is from about 28 percent to about 42 percent. An aerosol-generating article according to any preceding claim, wherein the distance between the ventilation zone and the upstream end of the hollow tubular segment is at least about 2 millimeters. An aerosol-generating article according to any preceding claim, wherein the hollow tubular segment has an equivalent internal diameter of at least about 2 millimeters.