DE1517253A1 - Filters for a smoking tobacco product and method for making the same - Google Patents

Description

DR. W. SCHALK · DIPL.-INC. P. WlRTH · DIPL.-ING. G. DAN N EN BERC DR. V. SCHM I ED-KOWARZI K · DR. P. WEI N HOLD

6 FRANKFURT AM MAIN

01.IICHINHIIMH ST *. ■ «

British-American Tobacco Company Limited Westminster House,

7 Millbank,

London S. W, l / England

Filters for a smoking tobacco product and method of making the same.

The present invention relates to a filter for smoking tobacco products,

by which a flavoring additive is added to the smoke

becomes when the tobacco product is smoked, as well as an improved one Process for its manufacture.

In particular, the invention relates to an improved smoking tobacco product with a filter and a process for its production, which contains a water-soluble polyaccharide, because «with flavorings, such as Menthol, is provided by adsorption.

Menthol and other flavorings are used in smoking tobacco products often added to the smoke with certain flavor and taste

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To provide aroma properties that are perceived as pleasant by the smoker. Menthol and other flavorings became common applied directly to the tobacco in the cigarette or other smoking product or mixed directly with the tobacco. When smoking the additive or the decomposition products of this and mix with the smoke, giving it taste and aroma. Smoking tobacco products made this way Supplied menthol and other flavorings contain, lead to difficulties and have disadvantages. So are products of this Kind due to the volatility of menthol and certain other additives and due to the decomposition of other additives with with increasing age, especially if they are incorporated directly into tobacco, can only be stored for a limited time. Also occurs during pyrolysis often an organoleptically (i.e. perceptible by the human senses) uneven escape of the additive into the Smoke when smoking the product.

The present invention aims to eliminate the above Difficulties and disadvantages and the manufacture of an improved smoking tobacco product and method su its manufacture in which Menthol or other flavoring substance can be incorporated into the tobacco product in an improved manner, with a longer shelf life being achieved

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without loss or decomposition of the menthol or the other additives occurs, and in which there · menthol or others Additives to the smoke stream in an organoleptically improved manner Smoking be fed. '

A feature of the present invention is the use of an improved one Filters for cigarettes and other smoking tobacco products and also ™ an improved process for making the same is menthol and other flavorings can be incorporated into the filter in an improved manner.

The invention relates to the manufacture of a filter for smoking tobacco products from an absorbent material to which a water-soluble β Poly saccharic! is applied, in which a flavoring substance suitable for tobacco, such as menthol, is adsorbed. When the tobacco product is smoked and the water-soluble polysaccharide exposed to the products of combustion is, the menthol or other flavoring substances are desorbed and fed into the smoke stream.

The invention thus also relates to a method for production a filter or filter part for a smoking tobacco product, which is arranged so that a flavoring substance is added to the smoke and that is characterized in that a water-soluble polysaccharide,

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in which an aroma is absorbed, in a relatively thin layer on the Filter is applied.

The invention also relates to a filter for a smoking tobacco product, by adding an aroma to the smoke when smoking the tobacco products is fed, be et before nd aua a compressed ("compacted") ™ absorbent material as it comes in a tubular filter wrap is located and provided with a multitude of winding smoke passages in the longitudinal direction, and a water-soluble polysaccharide, which is applied to the absorbent filter material in a relatively thin layer, so that the polysaccharide layer along the smoke stored continuously and provided with the aroma by adsorption where the flavoring substance is added to the smoke when it is exposed to the combustion products of the tobacco · '

The invention also relates to a filter provided with the above Smoking tobacco product consisting of a tubular casing having an end for lighting (igniting) and a mouthpiece end and compressed, crushed tobacco that is in this casing and extends over most of the length of the casing from the The ignition end extends up to the mouthpiece, the filter being arranged in the casing on the mouthpiece in such a way that the smoke passages with the tobacco at the inner end and with the air at the outer end

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The present invention will now be exemplified with reference to the drawings

explained in more detail, namely show:

1 is a diagrammatic representation of a smoking tobacco product with a flush filter ¹¹ according to the invention, in which the cover on the mouthpiece has been partially removed in order to expose the filter and the adjacent part consisting of compressed, comminuted tobacco ;

2 shows a diagrammatic representation of a smoking tobacco product with a fiction ge mass, separated from the cigarette end

Filter in which the cover on the mouthpiece has been partially removed,

around the filter and the adjacent parts of the compressed, expose crushed tobacco;

3 shows a diagrammatic representation of a smoking tobacco product with a double filter according to the invention, in which the Filter part ge mass of the present invention connected to the shredded tobacco and in which the casing on the mouthpiece partially removed to expose the filter and adjacent shredded tobacco;

4 shows an enlarged sectional view through a layer or a Sheet of the filter material «from which the filter is composed,

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in which the layer of soluble polysaccharide provided with menthol or another additive by adsorption is represented;
and
Fig. 5 is a schematic representation of a method according to which the

Mixture consisting of the water-soluble additive on the * Filter material can be applied.

In the accompanying drawings, the invention is explained using a cigarette. However, the invention can also be applied to others Use types of smoking tobacco products.

The cigarettes shown have the usual shape and are provided with a tubular envelope 5 made of cigarette paper and an end for lighting 6 and a mouthpiece 7. Compressed, ) shredded tobacco 8 prepared in the usual way for smoking

is located inside the envelope and extends over most of the length of the cigarette case from the end of the ignition to the Mouthpiece «A filter made from the absorption material 9 that is surrounded by its own tubular filter envelope Io, is arranged inside the cigarette hall 5 on the mouthpiece, as in FIG. 2 and 3 is shown. The filter material 9 is layered with a polysaccharide H in which the menthol or another flavoring substance were adsorbed. The filter can be made of any absorption

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material, such as absorbent filter paper.

The invention does not relate to the method for preparing the crushed Tobacco or the usual production of a filter tab to be processed, nor the processing of the tobacco, des Filter and the rolling paper su a cigarette. Rather, it relates to the production of a material from an absorption existing filter for smoking tobacco products, which is coated with a layer of water-soluble polyaccharide by adding menthol or other Flavorings have been adsorbed, provided and exposed to the products of combustion when smoking the tobacco product, whereby the aromatic additives are desorbed and the smoke stream to be supplied «

Fig. 1 shows a unitary one with the cigarette end flush single filter 3o, which consists of a suitable absorbent filter material 9, for example absorbent Paper, is made to which the layer 11 of polyaccharide with an adsorbed flavor has been applied.

Fig. 2 shows a remote from the cigarette end filter 31, which is also made of a suitable absorbent filter material 9, for example filter paper, is made to which the layer 11 of polyaccharide with an adsorbed flavoring substance has been applied.

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Fig. 3 shows a double filter, which consists of two filter units 32 and 33 composed. The filter unit 32 closes with the end of the cigarette and its outer end is exposed, while the filter unit is arranged between the filter unit 32 and the tobacco product 8. The filter unit 32 can be any absorbent filter material, such as absorbent paper, oL cellulose, cellulose acetate,

Cotton or the like., Are. The filter unit 33 corresponds to Filters 3o and 31 and consists of a suitable absorbent Filter material 9, such as filter paper, with a coating 11 Poly saccharin is provided, on the surface of which the flavoring substance applied and adsorbed.

As already mentioned, the absorbent filter material comes with a Provided a layer of a water-soluble polysaccharide in which menthol or other aromatic substances have been absorbed. It was found that soluble polysaccharides possess the property of menthol and other aromatic additives for smoking tobacco products to adsorb and bind them for a longer period of time without significant loss or other impairment, thereby increasing the shelf life of Tobacco products whose filters are soaked with substances of this type is extended. It was also found that the menthol and other aromatic substances are desorbed and added to the smoke, giving it a special taste or smell and aroma

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confer when using such water-soluble polysaccharides adsorbed flavorings are exposed to the combustion products of smoking tobacco.

It was found that an unexpected organoleptic improvement was the release of menthol or the other flavoring substances when smoking a tobacco product as well as a desired improvement ™

Saving of taste and aroma can be achieved when on the filter water-soluble polysaccharides with adsorbed menthol or other flavoring substances are applied.

The water-soluble polysaccharides used as a carrier substance for binding menthol or other additives can be used, Can be natural gums, such as gum arabic, carob gum, "guar" gum, "karaya" gum, and "galactomannan" gum too Lactose, maltose, agar or the water-soluble salts of carboxymethyl cellulose, Carboxyethyl cellulose and carboxy methylhydroxy cellulose be.

Water-soluble polysaccharides of this type have a strong affinity against menthol and other aromatic additives. It is believed that this affinity is mainly due to adsorptive forces is due. The within the scope of the present description and the

Claims used expression adsorption is intended to apply to the just

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referred to as affinity, regardless of whether it is an actual affinity Adsorption, a physical or chemical bond, a complex formation or the formation of an inclusion compound. These water-soluble polysaccharides have a stronger affinity to certain combustion decomposition products of Smoking tobacco, including water, with the latter also included leads to the fact that the polysaccharide dissolves or eovates and one receives the result that menthol and other aromatic additives, when exposed to the products of combustion, are desorbed and the Smoke flow can be supplied, whereby the smoke is given a special taste or smell and aroma.

The release of menthol or any other flavoring agent from you Filters of this type depend on the efficiency of the filter. When the efficiency of the filter is increased, the release also increases of menthol or the other flavoring substance. This is of importance in determining the quantities of these substances that are on the filter be applied.

As already mentioned, the flavoring substances that belong to the invention Use can be adsorbed by the polysaccharide, menthol and other aromatic additives, such as eugenol, Anisaldehyde and piperonal.

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The adsorption of the aroma in the water-soluble poly saccharic! can be done by first dissolving up to 5% by weight of the flavoring substances in a suitable solvent such as ethyl alcohol, isopropyl alcohol or triacetin. The polysaccharide is then added to this solution in finely divided form in amounts of up to 20% by weight, based on the total mixture. The mixture is then stirred, m

whereby a suspension of the polysaccharide is formed. It was found that the water-soluble polysaccharides adsorb up to 25 wt .- ^ menthol or other flavoring substance, so that the weight proportions can be 80% water-soluble polysaccharide and 20% menthol or other flavoring substance. Accordingly, a sufficient amount of water-soluble polysaccharide should be added to the above solution so that the percentage by weight of menthol in the solution-free mixture does not exceed about 20%.

The suspension of the water-soluble polysaccharide with absorbed Menthol is applied to the absorbent filter material either before, during or after the manufacture of the filter, namely by Spraying, brushing on, rolling up the suspension or dipping into the suspension of the water-soluble polysaccharide Indian menthol containing solution.

A preferred method of applying the polysaccharide and the Flavorings on the absorbent filter material are shown in FIG.

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Through a spray nozzle 23, the suspension becomes that described above Type of water-soluble polysaccharide is sprayed onto the filter material 9 before the filter material is in the tube 15 BU a rod is pressed together. Instead of the spray nozzle 23, a brush or a roller can be used to apply the material. Likewise, the filter material can also pass through a bath containing the suspension

be directed. You can also use spray nozzles, brushes and rollers Apply the suspension to both sides of the filter material. After this When the suspension is applied, the solvent is evaporated, and a coating 11 of polysaccharide with adsorbed therefrom remains Flavor back.

In Fig. 5, a continuous process is shown in which the Filter material with the polysaccharide coating with the adsorbed Flavor and then compressed into a filter will. It is noted that the covering of the filter material has a some time can take place before the actual filter is manufactured. The coating can also be applied after the filter has been manufactured will.

In Fig. 5 is a feed β roll 14 made of absorbent filter paper shown, of which the path of the filter paper β 9 over suitable Guide rollers (not shown in the drawing) sucked and on it

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is compressed or pressed together in the shaping tube 15.

Roll of 17 in

the rod-forming tube 15 is drawn and compressed around the

Paper wrapped in the filter stick. An adhesive to stick together

the intersecting edges of the filter envelope 16 is through a

Application roller 18 applied and then the Kontunier borrowed Filter β tab 2o through a rotary cutter 21 into the

cut to a predetermined length. As can be seen from the drawing, the spray nozzle 23 is for spraying on the aromatic substance containing polysaccharide suspension between the feed roller 14 and the shaping tube 15 is arranged. It's beneficial though between the spray nozzle 23 and the shaping tube 15 is a suitable one

Drying device and an exhaustor can be attached to the Evaporation of the alcohols or other carrier solvents too

accelerate.' f

The proportion of polyaccharide and flavoring used, based on the tobacco content, e.g. of the cigarette, can vary depending on the taste can be varied. Satisfactory results are obtained when the polyaccharide and flavoring agent are applied to the filter in such an amount be applied that on a dry basis the content of flavoring is between ο, οοΐ and 1, ο wt .-%, based on the tobacco content.

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That means that between about o, ol and Io mg of the water-soluble Polysaccharide adsorbed menthol can be applied to the filter of an average cigarette.

It has been found that the best results are obtained when the polysaccharide layer 11 is as thin as possible, ie the surface W of the absorbent filter material uniformly with the minimum amount

Polysaccharide is coated, which is required to make the one you want Amount of flavor to adsorb. If the layer is relatively thin, it is to a greater extent the end of the combustion product. Smoking tobacco exposed with the result that the flavoring substance is also released to a greater extent. The coating can be continuously over the Extend the entire surface of the filter mate rials, but it can also be applied according to a discontinuous scheme.

The following examples describe methods by which the improved filter for smoking tobacco products can be manufactured:

Example 1

An Ethylalkohollöeung was made from 5 g of menthol and 95 g of ethyl alcohol made from menthol. To this alcohol solution, 16 g of gum arabic was added and the mixture was stirred to form a suspension to manufacture. The suspension was then transferred to a strip of filter paper sprayed on and the solvent removed by a stream of warm air.

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The coated filter material then became filter rods processed.

Example 2 The procedure according to Example 1 was repeated, but instead

of gum arabic lactose was used.

Example 3 The procedure according to Example 1 was repeated, but instead of

of ethyl alcohol triacetin was used.

Example 4 The procedure of Example 1 was repeated, but instead

of menthol eugenol was used.

The cigarettes produced according to the above examples were \

organoleptically checked by smoking cigarettes; also were They subjected them to a laboratory test by lighting the cigarettes and then leaving them 60 seconds apart for 2 seconds mechanically sucked in another mouthpiece and then the aroma content of the smoke was determined by measurements. As a result of the Organoleptic tests the group of test persons firmly opposed an improved taste and an improved aroma Cigarettes made from the same tobacco blends in which the flavoring is the

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.16-

Tobacco was incorporated and not, as according to the invention, the filter.

The smoker's judgment thus resulted in an organoleptically improved one Release of menthol · From laboratory experiments η is

it can be seen that the smoke from the first to the last puff when smoking the cigarette has an increased menthol content compared to W Has cigarettes in which the flavoring is added to the tobacco

and an organoleptically uniform release of the aroma toffee results.

The preceding description shows that according to the invention an improved smoking tobacco product with an improved filter which, when smoking the tobacco product β, menthol and smoke other flavoring substance ^ supplies, is produced, the substances β a longer shelf life without loss of menthol or destruction of the flavoring and when smoking causes an organoleptically improved release of menthol or other aromatic additives.

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Claims (10)

New patent claims 1. A method of manufacturing a filter for a smoking tobacco product (30,31) which releases an aromatic additive into the smoke stream, characterized in that the aromatic additive to an at sioh for use for v Polysaccharide known together with smoking tobacco filters (11) adsorbed and applied the polysacoharide with the flavoring in a relatively thin layer on the filter material (9) will. 2. The method according to claim 1, characterized in that menthol, eugenol, anisaldehyde or piperonal is used as the flavoring substance will. 3. The method according to claim 1 and 2, characterized in that the water-soluble polysaccharide as a suspension on the filter material (9) is sprayed on. 4. The method according to claim 1 to 3, characterized in that in your water-soluble polysaccharide applied to the adsorbent filter material (9) the flavoring substance in an amount from 0.01 to 10.0 mg per average cigarette . is sorbed. 5. The method according to claim 1 to 4, characterized in that a filter is used that is let free of tobacco. - 18 909846/0305 MtUt documents - 18 - 6. The method according to claim 1 to 5, characterized in that that the filter is made of compressed absorbent material is produced, which has a number of bound rough has corridors that extend and sioh in the longitudinal direction one end with the smoking tobacco product and at the other end with the air in communication, so that the flavoring when roughening the tobacco product, when it is exposed to the combustion products of the tobacco, desorbed and in the Smoke stream is released. 7. The method according to claim 6, characterized in that the compressed absorbent material (9) of a tubular filter cover (10) is surrounded and the water-soluble polysaccharide on the absorbent filter material is applied in a relatively thin layer and stored along the smoke passages. 8. A method for producing a smoking tobacco product according to claim 7, characterized in that a tubular Sheath (5), which has an ignition end (6) and a mouthpiece (7), is used and crushed, compressed into the sheath Tobacco (8) is given, which extends over most of the length of the casing from the end of the ignition to the mouthpiece extends out, wherein the filter in the shell (5) is arranged on the mouthpiece so that the smoke passages on the inside End with the tobacco and the outer end with the air in Connected. 909846/0305 ^Λ 1517263 9. Process for the production of a smoking tobacco product according to Claim 8, characterized gekennzelehnet that the flavoring in an amount of 0.001 to 1.0 wt .- ^, based on the crushed Tobacco, is used. 10.Filter for a smoking tobacco product, which when smoking the 'ja ·· bakproduktee releases an aromatic additive into the smoke stream characterized in that the filter preferably comprising compressed absorbent material in a tubular envelope having a number of bonded Has smoke passages that extend longitudinally and a water-soluble folysaccharide in which a Aroma substance was adsorbed, is stored in a relatively thin layer along the smoke passageways. The patent attorney ^ 14 Hi. 12/68 (§46 WOl 909846 / C305 - * ti - » L e eV s e i t e