Smoking article with improved delivery profile
First Claim
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1. A smoking article comprising:
- a cylinder of smoking material;
a hollow tube within the cylinder of smoking material;
a heat sink at a downstream end of the hollow tube; and
a filter system attached to the cylinder of smoking material, the filtering system comprising a sorbent material and at least one downstream segment of filtering material.
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Abstract
A smoking article, which provides lower amounts of total particulate matter in a latter portion of its puff count, includes a cylinder of smoking material, a combustible hollow tube within the cylinder of smoking material, and a heat sink at a downstream end of the hollow tube. The smoking article also includes a filter system attached to the cylinder of smoking material having a sorbent material and at least one downstream segment of filtering material.
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Citations
29 Claims
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1. A smoking article comprising:
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a cylinder of smoking material;
a hollow tube within the cylinder of smoking material;
a heat sink at a downstream end of the hollow tube; and
a filter system attached to the cylinder of smoking material, the filtering system comprising a sorbent material and at least one downstream segment of filtering material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A smoking article comprising:
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a cylinder of smoking material;
a hollow tube within the cylinder of smoking material and having a heat sink at a downstream end thereof; and
a filter system attached to the cylinder of smoking material, the filtering system comprising a substrate containing an aerosol former. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A smoking article comprising:
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a tobacco rod ignitable to form a coal;
a filter in cooperative relation with said tobacco rod;
said tobacco rod comprising;
a fully filled rod portion adjacent a free end of said tobacco rod; and
a hollow, partially filled, rod portion located between said free end and said filter;
such that tar delivery per puff is reduced as a coal progresses from said fully filled rod portion into said hollow, partially filled, rod portion.
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28. A method of making a smoking article, comprising:
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forming a tobacco rod portion of the smoking article by placing smoking material between a hollow tube and an outer layer of wrapper paper;
forming a filter system of the smoking article having a plurality of segments comprising a heat sink segment and at least one filtering material segment; and
joining said tobacco rod portion in end-to-end relationship with the filter system.
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29. A method of generating from a smoking article a smoke of enhanced perceived strength by altering the puff count profile of the smoking article to have stronger per puff delivery along one or more first puffs by spacing a hollow tobacco rod portion in a spaced relation away from a fully filled tip portion of the smoking article.
Specification