DE1517307A1 - Filters for tobacco products, especially cigarettes - Google Patents

Description

The invention relates to a filter for tobacco products containing flavorings, in particular a filter containing carbon Filters for cigarettes and the like, which also contains a flavor in combination with the coal » substance contains ».

The invention aims to contain a flavoring agent To provide filters for tobacco products, especially for cigarettes, which prevent the smoke from passing through gives a pleasant taste and a pleasant aroma, the flavored substance over long periods of time without significant

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Honing withholding loss or change of character and only emits it when the tobacco smoke is drawn through the filter, and it was at a controlled speed.

One has already tried to filter Oeeohmackestoffe Incorporating tobacco smoke. For example, paper, cotton or cotton wool have been used as filter materials and pharmaceutical compounds, vinegar or water-based mass have been added to them, However, these attempts were not of great success accompanied, and although such proposals are already 70 years old, it has so far not been possible to find a filter for Successfully adding an oeso flavor to tobacco smoke. The known filters hold a. B * the snack material do not return in storage, do not give them in satisfied * retardant manner and often suffer in the storage and / or during the manufacture of the tobacco product Oeechmaoke changes.

The invention overcomes these disadvantages.

According to the invention, a carbon-containing filter is used an ingredient or group of ingredients added.

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The carbon-containing filter consists of a basic material such as paper or tow, which is provided with carbon particles is.

The carbon particles should have a size between about «£ 0.044 to about 0.84 mm, i.e. h «they can be so small be that they pass through a sieve with a mesh size of 0.044 mm, or they can be so large that they can pass through a Pass a sieve with a mesh size of 0.84 mm. in case of a The basic material made of paper can have particle sizes in the range ▼ on ^ 0.044 to 0.84 and preferably from - £ 0.037 to 0.42 mm to have. In the case of tow as the basic material, the particles also have sizes in the range from £ 0.044 to 0.84 mm, but are mostly in the size range from 0.074 to 0.42 mmο

The carbon heights should have a pore size ewisohen eiwa 17 and 1000, preferably between about 50 and 200 S in diameter.

Any non-carbon filter material, such as those commercially available, can be used as the base material for the filter Filter materials are used, which is an adsorbent and / or an absorbent, such as paper, cellulose acetate, molecular sieves, crystalline cellulose, aluminum oxide, Fuller's earth, rice starch, cellulose paper, cellulose powder and Diatomaceous earth,

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The carbon can on the Orundetoff on well known “Ground” the ax, e.g. by dusting or brushing of the carbon on the (! round material.

Any eso flavor can be used that has a vapor pressure greater than about 1 micron at 20 ° C and less than about 200 mm Hg Typical eesehaack substances of this type are borneol, oeranyl acetate, carveol, Piperonal, Citral, Euoalyptal, Oeranylformlat, Bsnsylbutyrat, Cltronellylacetat, penohyl alcohol, Iaobutylphenylaoetat, Isopulegol, menthol, nonyl alcohol, undeoanaidehyd, citronellol, Indole, terplneol, deoanaldehyde, benayl alcohol and phenyl ethyl acetate.

The taste substance can, depending on its nature and the desired Oeeohmaok, be present in quantities which are within further Orensen vary. latOrlioh must have a sufficient amount of the Oeeohmacksstoffee are applied so a noticeable amount of which smoke is emitted through the filter.

The oeschmaoksstoff can be applied to the carbon by mixing the carbonaceous base material with a solution, Emulsion or suspension of the oesoh maize toffee treated or is immersed in the same, or by adding a solution, emulsion or suspension of the flavor on the carbon-containing one ■ Basic material is sprayed or streaked on. Another

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The method of applying the cling fabric consists of because the taste substance is mixed with the carbon, before the latter is combined with the base material. Likewise, the flavor can be mixed with the carbon and an adhesive, e.g. B. polyvinylpyrrolidone, mixed and the mixture can be applied to the base, or a paint composed of carbon, flavor and a resin such as carboxymethyl cellulose can be prepared and print the paper with this mixture or spray the tow with it * You can also use the whole cigarette or the whole Bring tobacco product together with its filter in an atmosphere of the flavoring substance, e.g. B. by nan the cigarette in a closed vessel in which the flavor is in vapor form. Same flavor or the same flavors that are in the carbonaceous filter or additional flavors can be in other parts of the tobacco product « In the case of a cigarette, the flavors z. B. in the cigarette paper and _.j the tobacco filling as well as in other filter subassemblies of the cigarette are located, those fall available. Solohe additional flavors will be added however, not held in the same way but tend to be, to some extent, in the carbonaceous Filter to hike "

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According to a preferred embodiment of the invention, this is the case carbonaceous filters are used as the inner filter, adjacent to the tobacco, while a conventional ice-cream filter in connection with it serves as an external filter and so on the carbon filter assures that it is calibrated between the carbon filter and the smoker's dog. The conventional white filter, which can be referred to as a non-carbon filter, is the most practical contains no carbon, e.g. B. adsorbent and / or absorbent substances such as paper, cellulose acetate, molecular sieves, crystalline cellulose, aluminum oxide, fuller's earth, rice starch, gelulose paper, cellulose powder or diatomaceous earth ο

Ea is believed to be achieved by the invention Effect is based on the fact that the flavor contained in the carbon-containing filter through the smoking Suspended matter of the breath is replaced. In this regard, it is especially important that the carbon-containing filter has such a high draw resistance that it releases the flavor contained in it. In the case of cigarettes, the draw resistance of the carbon-containing filter should be between about 7.6 and 63ι5 mm water column are, but is preferably between about 25.4 and 50 ram of water. If also a wise filter is used, as is the case with the preferred one Embodiment of the invention is the case, the white Filters preferably have a drag resistance between about

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12.7 and 25t4 beaitsen on Waaaeraäule; the train resistance can however, about β larger or smaller aain. The total resistance to draw of the cigarette is also important because of the tobacco filling no case higher than about 152 mm WeeBor column aein and Torzugaweiae not more than 127 m Laeeereäule.

The pull resistance is determined as follows:

doing the help of a vacuum system * will «In air stream clay 1050 mlyfrln. sucked in, meanwhile the conical end «of a normal one

Krfplllarrohree in the teeth of the cigarette holder β

se did and the reading on the faaaermanometer on the correct one

Draw resistance is adjusted. Before the normal capillary

is used, the waaeerspiegel of the manometer is on

Hull set.

Then the stammering or the pilter stopper of a cigarette becomes to a depth of 5 mm in the tooth dam of the cigarette lighter with an air flow of 1050 ml / fine, the pressure drop behind the cigarette is immediately shown as draft resistance in mm water column from the inclined one Read the temperature gauge.

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562-398 Example 1

7.5 now long filters are plugged from carbon-containing tow 150 minutes at 100 ° C in an exeiocator, the Contains menthol / Then the plugs with 20 ml of ethanol extracted and chromatographically analyzed for their menthol content. The plugs have 6.7 mg menthol per plug adsorbed. Then the 7.5 mm long carbonaceous tow plugs are combined with 7.5 mm long cellulose acetate plugs set and the double stopper attached to a 65 mn long cigarette. 4 cigarettes are put up on the machine smoked a stunma length of 25 mm, and the velvet debris is collected on a Cambridge pilter, which Partial ohen of 0.3 micron Orösee retains (efficiency $ 99) · The duration of the pull is 2 seconds and the time interval «Wipe successive puffs for 1 min. The puff volume is 35 ml. The Cambridge Pilter body is removed from the holder taken out and overnight with 4 ml of 95 # ethanol extracted. 0.001 ml of the solution is injected into a chromatographic column and the menthol is determined with a thermal conductivity detector. The mean menthol content is 0.7 mg per cigarette.

The subjective evaluation of the cigarettes by a smoking panel shows that the menthol was removed during the smoking process.

The cigarette goes increasingly into the rough.

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Example 2

Double filter, consisting of an internal filter made of bit carbon "impregnated" paper and an external filter made of cellulose acetate tow, are attached to normal cigarette sticks »Hit an injection syringe, 2.0 mg of menthol are in the injected inner pilter plug. The cigarettes will Just smoked example 1 with the machine, and the menthol content of the smoke was gas chromatographed according to example 1 certain The mean menthol content of the smoke is 0.5 mg per cigarette »

The subjective evaluation of cigarettes by a smoker « Committee shows that the menthol goes well into the Rauoh

Example 3

3289 g of natural Brazilian 1-menthol are in 1500 ml Ethanol dissolved with gentle warming «The solution contains 73.5 Gewo # menthol.

This solution (solution A) wi: d using a parbene spray gun sprayed onto carbon-containing paper (30 mg carbon per 10 mm plug length); after the paper duroh the Crimping device has passed, but before the filter rod is made in a known manner. Pie coloration

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speed from the spray gun is 12.5 ml / min.

The 73.5 # strength menthol solution is then diluted with an equal amount of ethanol. The solution now contains 238 mg menthol per leaf. This solution (solution B) is, as described above, sprayed onto the filter material made of carbon-based paper »

4 filters soaked with menthol in this way are extracted with 20 ml of ethanol and their menthol content is analyzed by gas chromatography. The filters sprayed with solution A contain an average of 2.81 mg menthol per filter plug. The filters sprayed with solution B contain an average of 0.99 mg menthol per filter plug »

Cigarettes are produced which have a 10 mm long inner filter part from the one with the solution A or with the Solution B soaked carbonaceous paper and a 10 mm long external filter part made of cellulose acetate. Pie doubles are used on normal cigarette sticks attached ο

The cigarettes are smoked in the normal way with the machine. .4 Cigarettes are smoked to a stub length of 25 mm , and the total suspended matter is collected on a Cambridge filter, which retains particles from 0.3 microns in size with 99.9% efficiency. the

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Moves lasting 2 seconds are carried out at intervals of «1 minute. The draw volume is 35 ml. The Cambridge filter body is removed from the holder and taken with it 4 Kl 95 ^ igem ethanol extracted. 0.001 ml of the solution will be injected into a chromatographic column, and the menthol is determined with a flame ionization detector. The smoke of the cigarette with the filter treated with solution A. manufactured, contains an average of 0.09 mg menthol per cigarette. The puff of the cigarette made with the filter treated with solution B contains an average of 0.05 mg menthol yes Cigarette.

Other samples of the cigarettes are smoked in this way that the total suspension content of each train individually is collected on a filter body. On this catfish wit the smoke from 8 cigarettes on one filter body each and the total amount of particulate matter of every other puff becomes analyzed. The results show that the amount of menthol in the Rauoh increases after the first puff.

The subjective evaluation of the smoke of these cigarettes shows that the menthol passes well into the smoke.

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Example 4

Cellulose acetate-Y / erg (titer 8/75000 den) is as follows treated"

The flaky tow is spread out with an adhesive (PVP-TEu) sprayed and nit a weighed, previously with citral offset amount of carbon dusted. Then the tow is pulled through a 90 mrc long hollow tube (normal cigarette filter tube). Cigarettes are made with a normal tobacco filling using 10 mm of the treated filter tab and a 10 mm long outer filter plug untreated cellulose acetate (low draw resistance and low filter efficiency). Using this procedure, five samples are prepared with the following additives:

Carbon "Darco HDB "

3 ml Citre.l be au 10 n carbon (Darco HDB) was added "The thus treated carbon is overnight in a sealed container was allowed to stand. 45 cm cellulose acetate tow, onto which an adhesive has been sprayed, is dusted with 1.0139 g de3 treated carbon (21.5 mg carbon / 10 mm plug) «

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"Barnebey-Cheney " coconut charcoal

As described above, 10 g coconut charcoal (Bainebey-Cheney) are soaked with 4 ml Citial (18.7 mg / 10 can tow).

Powdered carbon to ff "Pittaburg BPL"

3 ml citral become 10 g carbon (Pittaburg BPL), like described above, added (23.6 mg / 10 mm tow) *

"Nuchar" carbon

As described above, 4 ml of citral are added to 10 g of "Nuchar" carbon (? 2.6 mg / 10 mm tow).

With these different filters, cigarettes are made with normal Manufactured tobacco fillings.

The subjective} evaluation of the smoke of these cigarettes shows that in the case of the "Nuchir" carbon and the "Pittsburg BPL" M carbon, more poisonous substance passes into the breath than in the case of the Kokosnusekihie »

Example l ^

Cigarettes we .'den after 3 siepiel 4 hergeetellt, but with Eucalyptol or Carveol as flavorings. The reviews of the cigarettes give ciie the same results as in Example 4 "

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Claims (1)

Claims 1. Filters for tobacco products, especially cigarette filters, characterized in that it contains carbon and a flavor substance which at 20 ° C has a vapor pressure of about 1 micron to about 200 mm Hg .. Filter according to claim 1, characterized in that the flavor is made from borneol, geranyl acetate, carveol, plperonal, citral, eucalyptal, geranylformia, benzyl butyrate, citronellylacetate, penchy alcohol, isobutylphenyl acetate, ieopulegol, menthol, nonyl alcohol, and Decanaldehyde, benzyl alcohol and / or phenylethyl acetate consists _o 3 · Filter according to claim 1, characterized in that the The flavoring substance is menthol. ο cigarette filter according to claim 1 to 3 »daduroh characterized in that it consists of a first section containing the carbon and the flavoring substance and a second section of a filter material containing no carbon. BATH ORIGINAL 909835/0648
- 14 - 582-398 5. Tobacco product, characterized in that it is with a Filter according to claim 1 to 4 is equipped ο 6ο cigarette according to claim 5, characterized! that the pilter portion containing the carbon and the flavor is located between the tobacco filling and the non-carbon pilter portion 909835/0648 - 15 -