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US 12,564,215 B2Granted
Paper sheet filter element for a smoking article, and associated method
AssigneeR.J. Reynolds Tobacco Company
InventorsBalager Ademe, Paul Stuart Chapman, Wesley Steven Jones
Life of this patent
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Abstract
A filter element for use in a smoking article includes a filter material comprised of paper sheet having a crimped three-dimensional structure. Polyethylene glycol, triethyl citrate, or triacetin is interacted with the filter material to increase the selective removal of semi-volatile compounds from mainstream smoke being drawn through the filter element, over the filter material alone. An associated method of making a filter element for use in a smoking article is also provided.
Claims10
A method of making a filter element for use in a smoking article, consisting of:
- only crimping a filter material comprised of a paper sheet to form a three-dimensional structure from the paper sheet;
- and
- interacting polyethylene glycol, triethyl citrate, or triacetin with the filter material, by applying polyethylene glycol, triethyl citrate, or triacetin to the filter material during only crimping the filter material, to increase the selective removal of semi-volatile compounds from mainstream smoke being drawn through the filter element, over the filter material alone.
Dependencies are inferred from the claim text.