CN1125604C

CN1125604C - Smoking articles

Info

Publication number: CN1125604C
Application number: CN99802518A
Authority: CN
Inventors: J·R·桑普森
Original assignee: British American Tobacco Co Ltd
Current assignee: British American Tobacco Investments Ltd
Priority date: 1998-01-28
Filing date: 1999-01-26
Publication date: 2003-10-29
Anticipated expiration: 2019-01-26
Also published as: NO20003357D0; DE69907632T2; AU2431699A; WO1999038396A1; ES2199543T3; CN1289234A; NZ505480A; ZA99675B; NO325593B1; EP1051089A1; KR100597169B1; KR20010034343A; GB9801797D0; HK1032721A1; CA2317409C; DK1051089T3; JP2002501736A; BR9907722A; EP1051089B1; ATE239388T1

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

Tobacco product, prepare the method for this tobacco product and be used to prepare the hand scroll tool set of this tobacco product

The present invention relates to a kind of tobacco product,, the invention still further relates to the method that reduces tobacco product tributary cigarette as cigarette, cigar and cigarlet.The tributary cigarette is the cigarette that produces when the smoker is fired smoke point but do not inhaled.The cigarette that mainstream smoke produces when being meant and aspirating tobacco product by the smoker.Mainstream smoke is different with the chemical process of tributary cigarette.

The tributary cigarette is tedious to the non-smoker, and particularly when cigarette placement was for example stayed in the ashtray, it was desirable reducing the tributary cigarette.The improvement of mainstream smoke will influence the sensation of smoker to goods.

The present invention adopts activated carbon to improve the cigarette of tobacco product.Certainly, activated carbon has been used for tobacco product, and is used for various uses, and is in fact just like this since the excellent adsorption property that activated carbon has is familiar with by people.

For example, Williams etc. submit in the report that is printed on " Beitrage zur Tabakforschung; the 3rd volume; the 3rd part, 233-242 page or leaf " of laying equal stress at " 5th General Assembly of CORESTA; Vienna; 1964.10 " and the effect of the various carbon components in the filter tip are studied.The filtration of being made up of difference is minced and can be changed the absorption value of the mainstream smoke that difference constitutes.But we relate to carbon are positioned in the tobacco rod; That is, its condition of bearing is different from the condition in filter tip very much.

GB-A-1512352 shows, uses the porous particle activated carbon that adheres on the tobacco in tobacco rod to come mainstream smoke is worked.GB-A-1348580 has shown the sheet material of the reorganization tobacco-containing material that comprises activated carbon, and the main material as making cigarette can reduce the nicotine in particle and the main flow cigarette.

Till order, known to us only one piece, be that to use the document of carbon under will reducing the situation of tributary cigarette in tobacco rod be US-A-5092353 (EP-A-378774) in purpose.But the purpose of the document is by using the low-down wrapping paper of permeability (＜10CORESTA unit) to reduce the tributary cigarette.In order to compensate the trend that causes cigarette self-extinguishing, in tobacco rod, there is the chemical cellulose of pyrolysis.

This pyrolytic material does not carry out any activation processing.The not mentioned any prompting that chemical action may be arranged cigarette of the document, because pyrolytic material is a cotton linters in specific embodiment, it provides the carbon of comparison low surface area, thereby described chemical action is very little or do not have.

Thereby, contrast with the prior art, the invention provides a kind of activated carbon in tobacco rod, its chemistry for cigarette has effect, can not be limited to simultaneously to use hypotonicity paper, particularly, can not limit paper＜10CORESTA.

And then, the present invention adds activated carbon specific particle form, in the reorganization tobacco sheet in the tobacco rod of tobacco product to, in such a way: make the smoker in mainstream smoke, feel the bigger soft property of tobacco product, simultaneously, under the wide region porosity of goods wrapping paper, reduce tributary cigarette, particularly porous height and need not pay most careful attention to prevent goods minimizing tributary cigarette under the condition of putting out to being enough to make.

And then active carbon particle should be preferably plant origin, and because of it comprises the metal of trace, it helps to adsorb securely (especially) from the aldehyde in the cigarette, in fact can close with this compound huge legendary turtle.It is very crucial that these compounds that exist are removed, and can improve the soft property of feeling when goods are sucked.

But simultaneously, activated carbon can not reduce and even also can increase some useful volatile ingredient of cigarette.

The very important point is to have realized carrying out along tobacco product along with " coal " of tobacco product, seldom or hardly can be replaced by these particles replacements by the cigarette component that particle adsorbs.By the high temperature that in coal, produces (reach high to about 800 ℃) it is broken to gas cyaniding thing with the material of carbon granule self.

The reorganization tobacco sheet that comprises active carbon particle can be by the technology preparation of this tobacco sheet of conventional preparation, and it is similar to conventional paper technology again, then, tobacco sheet is pulverized with in the tobacco of mixing pulverizing, used as the material of tobacco rod.

But important use of the present invention will be " self-rolling " tobacco blend, that is, those are sold with loose shape and are packaged in the cigarette paper those by the smoker.

Thereby, the present invention includes the blend of the tobacco sheet of a kind of tobacco of pulverizing and reorganization, the latter comprises activated carbon.

The processing of tobacco sheet, no matter during pulverizing or in the operating process afterwards, perhaps by machine or the processing undertaken by the smoker, all may cause the loss of carbon granule, the tobacco sheet of reorganization can be coated or be made certain size and stop therein to help particle, particularly, particle can self carry out the microcapsules encapsulate before mixing.The advantage of a kind of means in back is, increases the size of particle, thus its machinery is stopped and size even, but be surprisingly found out that, can not influence its activity.

Embodiment 1

Cigarette is made by the mixture of U.S.'s flue-cured tobacco and burley, the bar that curls is cut, and tobacco is launched, and processes and be cut into per inch 32 otch (" cpi ").Mix the 20% reorganization tobacco sheet that has carried out identical cutting in the tobacco of pulverizing, it comprises 30% the active carbon particle from coconut, and the average grain particle diameter is 37 μ m, and particle size range is 0.5 μ m-150 μ m.The cigarette of control group does not just comprise active carbon particle as hereinbefore.

Cigarette is that 84mm is long, the no cigarette with filter tip of 7.9mm diameter.Be packaged as 80 CORESTAR flax base paper, have 2% potassium citrate combustion enhancer.

On the standard smoking machine, make cigarette carry out smoking process, gas phase and semi-volatility component are carried out the mainstream smoke analysis, the results are shown in table 1 and the table 2.

As shown in table 1, some aldehyde and ketone, particularly methacrylaldehyde and butyraldehyde exist surprising selectivity to reduce, and softer for the sense of taste that makes cigarette, removing of these materials is very important.On the other hand, compare with standard, there be actual increasing in some composition, particularly peaceful alkene, and it is considered to be of value to the sense of taste.

As shown in table 2, in semi-volatility component, exist similarly and reduce, though selectivity is lower. Embodiment 2

Adopt tobacco blend and the reorganization tobacco sheet identical to prepare cigarette and contrast cigarette, have only and adopt the porous paper of 25,50,80 and 180 CORESTA units respectively with embodiment 1.From the tributary cigarette of cigarette of the present invention and from the tributary cigarette of the cigarette of control group all significantly reducing aspect semi-volatility component and the nicotine content, as shown in table 3.Carbon monoxide and carbon dioxide increase may be owing to the reason that has granulated carbon in tobacco sheet.

Table 1

Gas phase analysis, the result sums up

(non--ISO 4387 conditions)

Outstanding numerical value has significant difference on the statistics (student t-test, bilateral) under 95% fiducial limit

Table 2

Semi-volatility component is analyzed, and the result sums up

N/d-does not detect

Detection limit: glycerol triacetate and TEGDA 1 microgram/cigarette

Table 3

Prop up flow measurement

	Sample	NFDPM (milligram/cigarette)	Reduce %	Nicotine (milligram/cigarette)	Reduce %	CO (milligram/cigarette)	CO ₂(milligram/cigarette)
	Sample	NFDPM (milligram/cigarette)	Reduce %	Nicotine (milligram/cigarette)	Reduce %	CO (milligram/cigarette)	CO ₂(milligram/cigarette)	25 CORESTA	Check experiment	30.1 25.5	- 15.3	7.00 5.74	- 18.0	76.3 80.5	634 626
50 CORESTA	Check experiment	32.5 28.4	- 12.6	6.55 6.07	- 7.3	70.6 76.1	612 682	25 CORESTA	Check experiment	30.1 25.5	- 15.3	7.00 5.74	- 18.0	76.3 80.5	634 626
50 CORESTA	Check experiment	32.5 28.4	- 12.6	6.55 6.07	- 7.3	70.6 76.1	612 682	80 CORESTA	Check experiment	29.1 27.5	- 5.5	7.09 6.21	- 12.4	81.9 74.1	629 672
180 CORESTA	Check experiment	33.9 27.5	- 18.9	7.03 6.07	- 13.7	77.6 73.6	630 653	80 CORESTA	Check experiment	29.1 27.5	- 5.5	7.09 6.21	- 12.4	81.9 74.1	629 672

Claims

1, a kind of tobacco product, it has tobacco rod, and this tobacco rod comprises the blend of broken tobacco and broken reorganization tobacco sheet, and the tobacco sheet of reorganization comprises active carbon particle and round the wrapping paper of tobacco rod, this wrapping paper has 20CORESTA or bigger intrinsic permeability.

2, according to the tobacco product of claim 1, wherein, active carbon particle derives from plant.

3, according to the tobacco product of claim 2, wherein, described plant source is a coconut.

4, according to claim 1,2 or 3 tobacco product, wherein, the average grain diameter of carbon granule is about 37 μ m.

5, according to claim 1,2,3 or 4 tobacco product, wherein, wrapping paper has the intrinsic permeability of 25CORESTA.

6, according to claim 1,2,3 or 4 tobacco product, wherein, wrapping paper has the intrinsic permeability of 50CORESTA.

7, according to claim 1,2,3 or 4 tobacco product, wherein, wrapping paper has the intrinsic permeability of 80CORESTA.

8, according to claim 1,2,3 or 4 tobacco product, wherein, wrapping paper has the intrinsic permeability of 180CORESTA.

9, a kind of production method that in smoking process, reduces the tributary cigarette and increase the tobacco product of soft sense, comprise the broken tobacco of the tobacco rod that is used for goods and contain the broken reorganization tobacco sheet of active carbon particle, and with having 20CORESTA or the bigger intrinsic infiltrative material wrapping paper as tobacco product.

10, according to the method for claim 9, wherein, comprise the manual tobacco product that rolls.

11, according to the method for claim 9 or 10, wherein, the aldehyde in the mainstream smoke that broken reorganization tobacco sheet contains 30% activated carbon granule when sucking this tobacco product with minimizing.

12, a kind ofly be used for manual rolling and reduce the tributary cigarette and increase the tool set of the tobacco product of soft sensation at smoking process, its comprise the broken tobacco that is used for the goods tobacco rod and contain active carbon particle broken reorganization tobacco sheet and as the wrapping paper of tobacco product, have 20CORESTA or a bigger intrinsic infiltrative material.