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US 12,672,671 B2Granted
Firm filter for aerosol-generating article
AssigneePhilip Morris Products S.A.
InventorsAlberto Bonici, Edoardo Montanari, Emeric Grandjean
Life of this patent
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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.
Claims9
A heat-not-burn aerosol-generating article, comprising:
- a length, a diameter and a longitudinal axis;
- an aerosol forming substrate;
- and
- a filter downstream of the aerosol forming substrate, wherein the filter comprises a length and a diameter;
- wherein the filter comprises filter material comprising cellulose acetate filaments in the form of a plug of filter material having the same diameter as the diameter of the aerosol-generating article;
- wherein the length of the filter is the length of filter material;
- and wherein the filter material has a linear density of greater than 7 denier and a density of from 0.11 g/cm3 to 0.2 g/cm3,
- wherein the filter has a resistance to draw of less than 70 mmWG
- and wherein the aerosol forming substrate and the filter downstream of the aerosol forming substrate are aligned along the longitudinal axis of the heat-not-burn aerosol-generating article.
6 more elements
Dependencies are inferred from the claim text.