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Smoking articles having reduced carbon monoxide delivery

a technology of carbon monoxide and smoking articles, which is applied in the direction of tobacco, tobacco treatment, applications, etc., to achieve the effects of reducing ignition proclivity, low permeability, and low cos

Inactive Publication Date: 2005-01-13
SCHWEITZER MAUDUIT INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] Unfortunately, the low permeability areas may have a tendency to increase the amount of carbon monoxide produced in the mainstream of the smoke of the article. In this regard, the teachings of the present invention are particularly well suited for use in combination with the above described smoking articles having reduced ignition proclivity properties.

Problems solved by technology

Some of the constituents contained in mainstream smoke, however, are scrutinized by government agencies and, therefore, may be undesirable in particular applications.

Method used

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  • Smoking articles having reduced carbon monoxide delivery
  • Smoking articles having reduced carbon monoxide delivery
  • Smoking articles having reduced carbon monoxide delivery

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0080] The following tests were conducted in order to demonstrate the teachings of the present invention and to show reductions in carbon monoxide delivery in smoking articles.

[0081] Hand sheets were made containing cellulosic fibers in combination with either a conventional filler or a carbon monoxide reducing agent in accordance with the present invention. All of the carbon monoxide reducing agents used in this example were forms of iron oxide.

[0082] The control contained calcium carbonate sold under the trade name ALBACAR 5970. ALBACAR 5970 calcium carbonate has a median particle size of about 1.9 microns.

[0083] Each of the hand sheets had a basis weight of about 30 gsm and contained the filler or the carbon monoxide reducing agent in an amount of about 30%. The hand sheets had a permeability of 15 Coresta units.

[0084] Each of the trial papers was used to form cigarettes. The cigarettes were tested using a Model R04 Smoking Machine, manufactured by Borgwaldt Technik GmbH of H...

example 2

[0088] In this example, further hand sheets were made all having a total filler loading of about 30% by weight. The hand sheets had a permeability of about 20 Coresta units and had a basis weight of about 30 gsm. As in Example 1, the control contained ALBACAR 5970 calcium carbonate in an amount of 30% by weight.

[0089] Three other hand sheets were constructed in accordance with the present invention. In particular, in two of the hand sheets, a portion of the calcium carbonate filler was replaced by hydrated iron oxide. In the third trial paper, the calcium carbonate was completely replaced by hydrated iron oxide.

[0090] The tests described in Example 1 were repeated and the following results were obtained:

TABLE 2COCO2O2Wet TarWet TarPuff(%)(%)(%)(g / cig)(mg / cig)CountControl4.099.112.530.012512.57.910%2.878.613.250.012612.68.05hydratedFe20320%2.077.2614.30.011311.38.3hydratedFe20330%1.847.0614.50.00898.96.53hydratedFe203WetCOCO2O2CO / TarCO / PuffTar / Puff(mg)(mg)(mg)(mg / mg)(mg / puff)(mg / ...

example 3

[0091] In this example, further hand sheets were constructed containing various carbon monoxide reducing agents in accordance with the present invention. The hand sheets were compared to a control. All of the hand sheets had a 30% total filler loading, had a permeability of about 25 Coresta units, and had a basis weight of about 30 gsm. The control contained ALBACAR 5970 calcium carbonate.

[0092] The hand sheets were formed into cigarettes and the tests described in Example 1 were repeated. The following results were obtained:

TABLE 3COWet TarSampleBMICoresta(%)(g / cig)Control9.6813.94.70.0306Cr20311.7614.94.10.03317PdO7.1714.83.20.0225CuO5.9313.53.850.0332PtO5.9914.140.0279hydrated13.0610.302.800.02Fe203yellow10Ca028.0010.603.500.03Co3048.319.82.20.0172CoO7.701040.0274CoCO314.6414.42.450.0185CO / PuffWetWet TarPuffCOCO / Tar(mg / Tar / PuffSample(mg / cig)Count(mg)(mg / mg)puff)(mg / puffControl30.68.215.610.511.903.73Cr20333.17813.280.401.664.15PdO22.56.58.420.371.303.46CuO33.29.314.500.441.563...

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Abstract

The present invention is directed to smoking articles having reduced carbon monoxide delivery are described. A carbon monoxide reducing agent is incorporated into the smoking article in order to reduce carbon monoxide levels in mainstream smoke. The carbon monoxide reducing agent may be, for instance, in metal oxide or in metal carbonate. The carbon monoxide reducing agent may be incorporated into a wrapper and / or into a column of smokable filler that are used to construct the smoking article.

Description

BACKGROUND OF THE INVENTION [0001] Smoking articles such as cigarettes are conventionally made by wrapping a column of tobacco in a white wrapping paper. At one end, the smoking article usually includes a filter through which the article is smoked. Filters are attached to smoking articles using a tipping paper that is glued to the white wrapping paper. The wrapping papers and tipping papers used to construct smoking articles are typically made from flax or other cellulosic fiber and contain a filler, such as calcium carbonate. The column of tobacco, on the other hand, may contain shredded tobacco leaves alone or in combination with reconstituted tobacco. [0002] Smoking articles such as cigars, on the other hand, are made by wrapping a plurality of tobacco leaves together. Cigars typically do not include a filter although various varieties are available that do contain a filtered tip. [0003] When a smoking article is being enjoyed, a user puffs on one end of the smoking article after...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A24B15/28A24D1/02
CPCA24B15/28A24B15/282A24D1/025A24D1/02A24B15/287
Inventor HAMPL, VLADIMIR JR.GU, ALICEMAHONE, KERRY
Owner SCHWEITZER MAUDUIT INT INC
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