ES2199543T3 - SMOKER ITEMS. - Google Patents

Abstract

Use in the tobacco rod of a smoking article of tobacco mixed with a reconstituted tobacco sheet which includes activated carbon particles, surrounded by a paper of CORESTA 20 permeability or greater results in an article having reduced sidestream smoke and selective reduction of certain ingredients in mainstream smoke, whereby the smoker has a perception of increased smoothness.

Description

Smoking articles

This invention relates to smoking articles such as cigarettes, cigars and small cigars, and is related to the reduction of current smoke Secondary smoking articles. The smoke of the current Secondary is the one that occurs when the item is on but it is not being sucked by the smoker. The smoke of the mainstream is the one that is generated when the article of smoker is sucked by the smoker; the chemistry of the fumes of the main and secondary current are different.

The smoke from the secondary stream is perceived as harmful to non-smokers, especially when a cigarette is deposited, such as in an ashtray, and is Desirable some reduction in it. The modification of the smoke of the mainstream affects the perception of the article by the smoker.

The present invention uses activated carbon to modify the smoke of a smoker item. Of course the activated carbon has been used in smoking articles and for various purposes, virtually since their excellent adsorbent properties.

For example, Williams et al. they have investigated the effects of various carbon contents of filters in a report presented at the 5th General Assembly of CORESTA, Vienna, in October 1964 and reprinted in Beiträge zur Tabakforschung, Vol. 3 part 3 , pages 233-242. This showed the variation of the adsorbance of different constituents of the mainstream smoke through shredded filter of different constitution. However, we are interested in placing carbon in the tobacco rod; that is, where it undergoes very different conditions from those of a filter.

The document GB-A-1512352 shows how to use porous activated carbon particles adhered to tobacco in the Tobacco rod affects the mainstream smoke. The GB-A-1348580 shows a sheet of reconstituted carbon-containing tobacco material activated, used as a majority material for manufacturing of cigarettes, which provided a reduction in particles and Nicotine in the mainstream smoke.

As far as we know, currently the only description of the use of carbon in a tobacco rod in a situation in which the smoke reduction of the secondary current is in the document US-A-5092353 (EP-A-378774). However the objective in the description was to reduce the smoke from the stream secondary by using very low wrapping paper permeability (<10 units CORESTA). To compensate for the tendency to self-extinguish the cigarette that this will cause, in the tobacco rod was present pyrolized alpha cellulose.

This pyrolized material was not subject to No activating treatment. No mention is made of any effect chemical that could have in the smoke, and probably has very little or no effect because in the specific example the material pyrolized was cotton swab, which could provide a comparatively low specific surface carbon.

The present invention is therefore contrasted with everything of the state of the art, providing on a rod of tobacco a carbon activated by having an effect on the chemistry of smoke, although not limited to the use of low papers permeability, and specifically not to the use of papers of <10 SHORT.

In addition, the present invention provides the addition of specific particulate activated carbon in reconstituted tobacco sheet to article tobacco rod of smoker, so that the smoker feels a greater softness in the mainstream smoke in the smoker article, and at same time there is a reduction in current smoke secondary over a wide range of porosities of the paper that wraps around the article, and in particular with porosities what high enough, so no precautions should be taken special to prevent self-extinction of Article.

In addition, the activated carbon particle should be preferably of plant origin, since it will then contain tiny traces of metals that collaborate in the firm adsorption of (particularly) smoke aldehydes and could effectively form  chelates with such compounds. These are compounds whose removal is especially critical to improve the smoothness of the perception of the article when smoking.

At the same time, however, activated carbon does not decrease and may even increase certain volatile components Benefits of smoke

It is important to realize that while the `` Ember '' of the smoking article progresses throughout the article, the smoke components adsorbed by the particles are they shift minimally or nothing from the particles. They are destroyed in form of gaseous oxides together with the material itself carbon particle by extremely high temperatures (which reach up to approximately 800 ° C) generated in the ember.

The reconstituted tobacco sheet containing Activated carbon particles can be manufactured by conventional techniques for manufacturing said sheets, which in turn they look like conventional papermaking techniques, then it  Crumble the foil to incorporate it with the shredded tobacco That will be the material of the tobacco rod.

An important application of the present invention however it will be in the tobacco mixtures of `` roll one same '', that is, those that are sold loose and that are wrapped by the smoker in smoking papers.

The invention therefore includes within its scope a mixture of shredded tobacco and tobacco leaf reconstituted, containing the latter activated carbon.

The handling of the blade, either in the crumbled or in subsequent handling, on a machine or by the smoker, can cause loss of carbon particles and the sheet of reconstituted tobacco can be coated or shaped to favor the retention of particles in it, and in particular the particles they can be microencapsulated themselves before the incorporation. The latter has the advantage of increasing the size of the particles and therefore their mechanical retention and uniformity in size but, surprisingly perhaps, it does not affect your exercise.

Example 1

Cigarettes were manufactured from a mixture of American tobacco cured in artificial atmosphere and tobacco Burley, tobacco based on rolled and sliced veins and tobacco extended, processed and cut to 32 cuts per inch (`` cpi ''). Incorporated in shredded tobacco there was 20% of a sheet of reconstituted tobacco equally cut and containing 30% of activated carbon particles from coconut, sized 37 µm particle average and the particle size being in the range of 0.5 µm to 150 µm. Cigarettes control were manufactured identically but with the omission of the activated carbon particles.

The cigarettes were 84 mm long, a 7.9 mm diameter, without filter. The wrapping paper was a paper based on CORESTA 80 flax, with 2% potassium citrate as burn enhancer.

The cigarettes were smoked in a standard smoking machine and mainstream smoke is analyzed for the vapor phase and semi-volatile content with the results shown in tables 1 and 2.

As seen in table 1, there is a decrease striking, selective in nature, of certain aldehydes and ketones and in particular acrolein and butyraldehydes, whose Elimination is important to soften the taste. On the other hand, there was an effective increase compared to the standard in certain ingredients, and particularly limonene, which are considered as beneficial in relation to taste.

A similar reduction is seen in semi-volatiles although less selective, as shown in table 2.

Example 2

Cigarettes and controls were prepared using the same mixture of tobacco and reconstituted tobacco sheet than in example 1, but using CORESTA papers of 25, 50, 80 and 180 units of porosity, respectively. The smoke of the current  secondary of the cigarettes of the invention and of the controls they had significant reductions in both the content of semi-volatile as in nicotine, as seen in table 3. It assumes that the increase in the production of monoxide and dioxide from carbon is due to the presence of particulate carbon in the sheet tobacco.

TABLE 1 Steam phase analysis, summary of results

(Non ISO conditions 4387)

Relative peak area Test how Control Test % of control Component Half DER * Half DER Isoprene 30.8 3 30.6 4 100 Limonene 2.3 33 2.6 17 114 Benzene 16.9 5 16.5 3 97 Toluene 26.7 9 27.3 4 102 Ethylbenzene 4.1 18 4,5 8 108 m- + p-Xylene 6.0 19 6.7 8 112 o-Xylene 1.4 twenty-one 1.6 9 112 Styrene 1.5 28 1.7 14 112

TABLE 1 (continued)

Relative peak area Test how Control Test % of control Component Half DER * Half DER Acetaldehyde 9.4 4 9.3 3 98 Propionaldehyde 2.6 7 2.5 7 97 Acrolein 3.5 4 3.2 5 92 n-Butiraldehyde 0.48 5 0.44 4 91 iso-butyraldehyde 1.3 4 1.2 4 91 Crotonaldehyde 2.6 9 2.5 6 98 2-Furaldehyde 1.5 37 1.8 twenty 114 Acetone 110.2 4 99.0 4 90 Methyl ethyl ketone 29.5 5 26.8 4 91 3-Methyl-2-Butanone 1.6 7 1.5 5 95 Diacetyl 55.1 5 50.2 3 91 2-Pentanone 0.27 6 0.25 4 94 2,3-Pentanedione 3.3 9 3.2 5 95 Cyclopentanone 2.2 18 2.2 18 101 Furan 5.7 3 5.4 4 95 2-Methylfuran 3.9 4 3.9 3 99 2,5-Dimethylfuran 6.3 6 6.4 3 101 Acetonitrile 12.9 6 12.6 5 98 Propionitrile 2.5 7 2.5 4 98 n-Butyronitrile 2.5 8 2.5 12 102 iso-Butyronitrile 1.1 7 1.1 5 96 Methacrylonotile 0.79 4 0.80 5 102 Pyridine 1.3 43 1.5 twenty 115 1-Methylpyrrole 1.4 12 1.5 6 107 Methyldisulfide 0.62 8 0.56 8 91 Thiophene 0.19 6 0.19 4 98 Replicas 12 eleven The values highlighted are statistically significantly different from a 95% confidence limit (Student's t-test, two tails) *) DER = Relative Standard Deviation

TABLE 2 Semi-volatile analysis, summary of results

\ mug / cigarette Test how Control Test % of control Component Half DER Half DER Limonene 21.9 13 20.8 10 95 Naphthalene 2.0 3 1.9 5 95 1-Methylnaphthalene 1.1 3 1.1 5 99 2-Methylnaphthalene 1.6 6 1.6 4 99 Neofitadian 127.2 7 108.8 3 85 Myosmin 9.3 4 10.1 3 109 Pyrrole 11.3 6 9.6 6 85

TABLE 2 (continued)

\ mug / cigarette Test how Control Test % of control Component Half DER Half DER 2-Acetylpyrrole 3.9 5 3.6 4 92 Indole 9.8 3 9.0 4 91 2-Furaldehyde 51.1 5 41.8 5 82 2-Acetylfuran 8.6 9 7.2 4 83 2-Furanometanol 43.4 7 37.2 7 86 5-Methyl-2-furfural 25.9 9 22.6 6 87 5-Hydroxymethyl-2-furfural 118.7 3 105.4 4 89 α-Angelicalactone Phenol 23.0 7 19.4 13 84 o-Cresol 79.5 4 71.9 4 90 p-Cresol 17.3 4 14.9 3 86 m-Cresol 27.5 4 24.6 4 89 2,3,6-Trimethylphenol 12.0 3 10.5 4 88 Pyridine 0.6 fifteen 0.5 6 84 Triacetin 13.0 14 13.2 7 102 TEGDA n / a n / a 1,2-propanediol n / a n / a 126.6 69 85.3 43 Drafts / cig: 67 TPM (mg / cig):  \ hskip0.5cm 9.0 \ hskip0.3cm two  \ hskip0.5cm 8.9 \ hskip0.3cm  one Replicas  \ hskip0.4cm 17.9  \ hskip0,3cm 3  \ hskip0,4cm 15.5 \ hskip0.3cm 3 98 12 12 87 n / a: no detected Limits of Detection: 1 \ mug / Triacetin cigarette and TEGDA The values highlighted are statistically significantly different from a 95% confidence limit (Student's t-test, two tails)

TABLE 3 Secondary current measurements

Shows NFDPM % Nicotine % CO CO 2 (mg / cig) Reduction (mg / cig) Reduction (mg / cig) (mg / cig) 25 Coresta Control 30.1 - 7.00 - 76.3 634 Test 25.5 15.3 5.74 18.0 80.5 626 fifty Coresta Control 32.5 - 6.55 - 70.6 612 Test 28.4 12.6 6.07 7.3 76.1 682 80 Coresta Control 29.1 - 7.09 - 81.9 629 Test 27.5 5.5 6.21 12.4 74.1 672 180 Coresta Control 33.9 - 7.03 - 77.6 630 Test 27.5 18.9 6.07 13.7 73.6 653

Claims (8)

1. A smoker item that has a rod of tobacco comprising a mixture of shredded tobacco and a reconstituted shredded tobacco leaf, tobacco leaf reconstituted contains activated carbon particles, and a wrap around the tobacco rod, taking the wrapper an inherent permeability of 20 SHORT or greater. 2. An article according to claim 1, in which the activated carbon particles are of origin vegetable. 3. An article according to claim 2, in which the plant origin is coconut. 4. An article according to claim 1, claim 2 or claim 3, wherein the particles carbon have an average particle size of approximately 37 µm. 5. A method to produce a smoker item with smoke from the reduced secondary current and greater smoothness that is perceived during smoking, which includes using for the rod of article tobacco, shredded tobacco and tobacco leaf reconstituted crumbled containing carbon particles activated, and as a smoker article wrapper a material which has an inherent permeability of 20 SHORT or greater. 6. A method according to claim 5, which includes hand-rolled smoking article. 7. A method according to claim 5 or claim 6, which involves the preferential reduction of Aldehyde content of mainstream smoke. 8. A team for hand rolling an article of smoker with smoke from the reduced and higher secondary current softness that is perceived during smoking, which includes for tobacco rod of the item shredded tobacco and tobacco leaf  reconstituted crumbled, containing carbon particles activated, and as a wrapper of the smoking article a material that It has an inherent permeability of 20 SHORT or greater.