Cigarette filter

FIELD: cigarette industry.

SUBSTANCE: cigarette filter comprises filtering sections including filtering materials, which are individually wrapped with wrapping paper, forming paper for wrapping of filtering section together, and mouthpiece paper for covering forming paper so as to connect filtering sections with cigarette section for producing of cigarette. Cigarette filter contains, as adsorbents, activated carbon and porous material based on inorganic mineral and comprising ferric sulfate/L-ascorbic acid in at least one of filtering materials or in gap between filtering materials.

EFFECT: reduced deteriorating influence upon cigarette taste and aroma and provision for eliminating of certain components contained in main smoke flow.

8 cl, 5 dwg, 1 tbl

 

The present invention relates to an improved cigarette filter is able to effectively adsorb certain components contained in the smoke of the main thread.

In the description of Japanese patent (Kokai) No. 63-160659 disclosed, for example, deodorant (absorbing) agent, containing a porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid. This document also described, for example, cigarette filter containing a deodorizing agent.

However, the adsorbent disclosed in this document is intended for adsorption mainly ammonia, and in this document generally not described, that smoke components the main thread deleted in the case where the adsorbent is in a cigarette filter. Usually when you use a filter containing an adsorbent capable of selectivity to adsorb various components contained in the smoke of the main flow, as is well known in this field, the taste and aroma of the cigarette undesirable worse.

The present invention is to create a cigarette filter, which allows to significantly reduce the negative impact on the taste and aroma of the cigarette while also allowing for selective removal of specific components contained in the smoke of the main thread.

Cigarette filter according to the invention contains Phi is truusje section, includes filter media wrapped individually wrapping paper, form paper for joint wraps of the filter sections, and double paper covering forming the paper to connect the filter section of the cigarette section with getting the cigarette to the filter, characterized in that it contains, as adsorbents, activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid in at least one of the filter materials or in the space between the filter media.

In the cigarette filter according to the invention specified wrapping paper or forming a paper may contain activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid as adsorbents.

Cigarette filter according to the invention has a specific structure, including, for example, (1) structure formed by two filter materials, and a mixture of activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid loaded in the space between these two filter materials, (2) structure formed by two filter materials and a mixture of activated carbon and porous mA is eriala on the basis of inorganic mineral, carrying ferrous sulfate/L-ascorbic acid, distributed in one of these filter materials, (3) structure formed by three filter materials, and activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, which are separately covered in the two spaces between the three specified filter materials, and (4) structure formed by three filter media, activated carbon, distributed in the same filter material, and a porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, dispersed in another filter material.

Another cigarette filter according to the invention includes the case of cigarette mouthpiece containing placed in it, filter materials, and is characterized in that it contains, as adsorbents, activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, at least one of the filter materials and the space between these filter materials.

However, the structure of a cigarette filter according to the invention is not limited to the above examples, and various modifications are possible.

Cigarette filter according to the invention can also with erati as adsorbent silicon dioxide/aluminum oxide in addition to activated carbon and porous material based on inorganic mineral, carrying ferrous sulfate/L-ascorbic acid.

Brief description of drawings

Figure 1 - schematic example of the structure of a cigarette filter according to the invention,

figure 2 is another example of the structure of a cigarette filter according to the invention,

figure 3 is another example of the structure of a cigarette filter according to the invention,

4 is a schematic view of an additional example of the structure of a cigarette filter according to the invention and

5 is a view in cross section of the cigarette mouthpiece, which used cigarette filter according to the invention.

A preferred variant of the invention

The present invention is directed, in particular, to the removal of pyrazines and phenols as mentioned specific components contained in the main stream smoke of cigarettes.

The inventors have discovered that when activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, contains as adsorbents in cigarette filter, these adsorbents provide such a synergistic effect that is particularly well-deletes the specified components contained in the smoke of the main thread, while the task of the present invention.

Filter materials used in the present invention include, for example, acetate, paper and non-woven material. As enabled what about the coal adsorbents can be used activated carbon from coconut shell. As a porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, for adsorbents can be used, for example, "Anico W" by Tokai Corporation. This product is produced from zeolite containing ferric sulfate and L-ascorbic acid, and it also contains bentonite and other inorganic salts. Ferrous ions contained in the sulfate of iron, react with certain components in cigarette smoke the main thread. It should be noted that, because ferrous ions are unstable and easily oxidized by oxygen, into ferric ions, also add ascorbic acid to prevent oxidation of bivalent iron ions.

In the present invention, the amount of activated carbon and porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid, install as follows: if adsorbents are in the filter material, the total number of adsorbents must be from 1 to 150 mg, preferably from 20 to 60 mg per 10 mm of the filter material, and if adsorbents are in the space between the filter materials, the total number of adsorbents should be from 5 to 300 mg, preferably from 30 to 120 mg per 5 mm space.

You can also use the th silicon dioxide/aluminum oxide as an additional adsorbent addition of activated carbon and porous material based on inorganic mineral, containing ferrous sulfate/L-ascorbic acid. As a silicon dioxide/aluminum oxide can be used, for example, "Kyoward 700SN" by Kyowa Chemical Industry Co., Ltd. This product contains 63.0 wt.% SiO2and 10.3 wt.% Al2O3and loses drying of 14.5 wt.%.

The following describes the embodiments of the invention.

The control cigarette filter that does not contain any adsorbent prepared as follows. Two filter media (filters circular cross-section) is produced by forming acetate, with the thickness of the filament of 2.2 denier and harness 40000 denier, obtaining a segment length of 10 mm, and filter materials wrap wrapping paper to get the two filter sections. These two filter sections have to provide between them a 5 mm space, and the two filter sections are wrapped together forming a paper without loading any of the adsorbent in the specified space. The ventilation resistance of the filter, as installed, is 80 mm H2On (1050 ml/min).

Figure 1 shows the approximate cigarette filter. Cigarette filter 1 is manufactured as follows. Two filter material (simple filters) 2 is obtained by forming acetate from the thick filament of 2.2 denier and harness 40000 denier, obtaining a segment length of 10 mm, and filter materials Obert who live separately wrapping paper so to get the two filter sections. Two filter sections have so that between them there was a space, and two filter sections are wrapped together forming a paper to be loaded in this space a mixture of 30 mg of activated carbon 41 and 30 mg of porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid (trade name: Anico W) 42, as adsorbents. In this case, the space is adjusted so that the adsorbent had 100% bulk density.

Similarly make other cigarette filter. Two filter sections have so as to form a space between them, and these filter sections are wrapped together forming a paper to be loaded in the space of a mixture of 30 mg of activated carbon, 15 mg of porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid (trade name: Anico W), and 15 mg of silicon dioxide/aluminum oxide (trade name: Kyoward 700SN), as adsorbents 4.

Figure 2 shows another example of a cigarette filter according to the invention. Cigarette filter 1 is made as follows: make three filter material (simple filters) 2, consists of three filter sections by wrapping them individually wrapping paper 3, download individual is about activated carbon 41 and the porous material based on inorganic mineral, containing ferrous sulfate/L-ascorbic acid (trade name: Anico W) 42, as the adsorbent 4 in the space from the shredded tobacco and the space inside the mouth between the three filter sections, and wrap forming paper 5 around the three filter sections. Figure 2 presents an example in which the activated carbon 41 loaded in the space inside the mouth, and a porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid loaded in the space from shredded tobacco. However, it is also possible cigarette filter with the opposite arrangement, in which the porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid loaded in the space inside the mouth, and activated carbon 41 loaded in the space from shredded tobacco.

For comparison, were also produced cigarette filters loaded within the space of 30 mg only activated charcoal, or 30 mg only porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid (trade name: Anico W), or 30 mg only silicon dioxide/aluminum oxide (trade name: Kyoward 700SN)as adsorbent.

In addition, to make cigarette filters loading into the space 60 is g only activated carbon, or 60 mg only porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid (trade name: Anico W), or 60 mg only silicon dioxide/aluminum oxide, that is, two times more absorbent than in cigarette filters mentioned above.

Each of these cigarette filters attach the strip to the cigarette section, obtained by wrapping the shredded tobacco wrapping paper to get to research different cigarettes that differ from each other by the type of adsorbent, as shown in table 1. For the cigarette sections used commercial cigarette rod. Study of the main stream smoke was carried out on these cigarettes, as follows.

A cigarette was attached to a machine for the automatic Smoking with a pipe made of Tigana (Tygon). The Cambridge filter is not used. Machine for the automatic Smoking were allowed to smoke a cigarette under standard conditions area with a specified length of combustion of 40 mm in the main stream Smoke from the exhaust holes collected in a gas bag, made of Tedlar (Tedlar) and containing helium, placed it in advance, and then the internal volume of the gas bag made with helium up to 8 liters in total. Fifty ml of gas taken from the gas bag, were analyzed using gas is th chromatography.

Take into account pyrazine, phenols, hydrocarbons and ketones as specific components of the smoke of the main flow, and data analysis each of the specific components received on the basis of the peak area issued by a gas chromatograph. Table 1 presents the passage (filter) pyrazine and phenols. The passage of theThateach of the specific components was determined by the formula:

TA = AA/Acnt,

whereAcntthe peak area of a particular component in the gas chromatograph in the case where the adsorbent is not used (control),AAthe peak area of a particular component in the gas chromatograph in the case of using the adsorbent "a". Each measured value is presented in table 1, obtained on the basis of the peak area of a specific component in a gas chromatograph.

In addition, the predicted value pass filter, which used 60 mg of activated charcoal, the mean square of the measured value pass filter, which used 30 mg of activated charcoal.

The predicted value pass filter, which used 60 mg of porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid (trade name: Anico W), mean square of the measured value pass filter, which used 30 mg of porous material the material based on inorganic mineral, containing ferrous sulfate/L-ascorbic acid (trade name: Anico W). Similarly, the predicted value pass filter using 60 mg of silicon dioxide/aluminum oxide mean square of the measured values for the filter using 30 mg of silicon dioxide/aluminum oxide.

On the other hand, the predicted value of the passage in the case of using two types of adsorbents are presented in table 1, indicates the calculated value of the passage, derived from the passage to the adsorbent in the case of use of each of the adsorbents of the two types. Specifically, the predicted value was determined by the formula (TaxTb), whereThatmeans passing (measured value) of a specific component in the case of using the adsorbent "a", andTbmeans passing (measured value) of a specific component in the case of using the adsorbent "b".

If the measured value pass in the case of using a combination of several adsorbents of different types is significantly less than the predicted value, then this may indicate that these components are absorbed particularly well, confirming the synergistic effect provided by the combination of adsorbents. Table 1 presents the results of the described studies.

Table 1
The adsorbentPenetration
PyrazinePhenols
Measured. valueThe forecast. valueMeasured. valueThe forecast. value
No1,001,00
Activated carbon (30 mg)0,600,68
Ferrous sulfate/zeolite (30 mg)1,060,86
Silicon dioxide/aluminum oxide (30 mg)0,730,61
Activated charcoal (60 mg)0,380,360,480,46
Ferrous sulfate/zeolite (60 mg)1,021,120,730,74
Silicon dioxide/aluminum oxide (60 mg)0,540,530,380,37
The mixture of activated carbon (30 mg) and iron sulfate/zeolite (30 mg), (60 mg)0,320,630,380,58
0,350,530,430,49
Side of shredded tobacco: charcoal

Side of the mouth: ferrous sulfate/zeolite
0,290,630,390,58
Side of shredded tobacco: ferrous sulfate/zeolite

Side of the mouth: activated carbon
0,320,630,3600,58

The only use of activated carbon in a double number, using only the porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid (trade name: Anico W), double, or using only the silicon dioxide/aluminum oxide in double the amount found no significant differences between the measured and predicted values.

The difference between the measured and predicted values for small hydrocarbons and ketones (table not shown), and therefore, the synergistic effect provided by the combination of several adsorbents, not detected.

On the contrary, when used as adsorbents combination of activated carbon and Paris the second material based on inorganic mineral, carrying ferrous sulfate/L-ascorbic acid, the measured values significantly below the predicted values in the case of pyrazines and phenols, as shown in table 1, which clearly confirms the synergistic effect on exceptional adsorption of these specific components.

In addition, it was found that a similar effect can be obtained when the activated carbon and porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid, are mixed with each other (Figure 1), and when activated carbon and porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid, posted separately (Figure 2).

From the results above, it is clear that, if a component such as pyrazine and phenols, must be effectively adsorbed using only the activated carbon, only porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid, or silicon dioxide/aluminum oxide, it is necessary to increase the amount of adsorbent. In this scenario, you expect a noticeable deterioration of the taste and flavor of cigarettes. On the other hand, in the case of use as adsorbents in combination of activated carbon and porous material based on neorg the technical mineral containing ferrous sulfate/L-ascorbic acid (and optionally silicon dioxide/aluminum oxide, if this is desirable), it is expected that components such as pyrazine and phenols, can be effectively adsorbed, even if the number of adsorbents is small, and therefore, their influence on the taste and aroma of the cigarettes less.

Figure 3 presents another example of a cigarette filter according to the invention. Cigarette filter 1 are as follows: make the filter material (simple filter) 2, obtained by molding acetate, and other filtering material 21 is obtained by forming acetate, containing as adsorbents activated carbon 41 and the porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid 42, distributed in it; form two filter sections by wrapping wrapping paper 3 around each of the filter material 2 and 21, and wrap forming paper 5 around the two filter sections.

4 shows another example of a cigarette filter according to the invention. Cigarette filter 1 are as follows: make the filter material (simple filter) 2, obtained by molding acetate, filter media (activated carbon filter) 21 obtained by molding acetate containing activated carbon 41 as the e of the adsorbent, distributed in it, and the filter material 22, obtained by molding acetate containing porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid, as distributed therein adsorbent; form three filter sections by wrapping wrapping paper 3 around each of the filter material 2, 21 and 22; and wrap forming paper 5 around the three filter sections. The location of the filter materials 21 and 22 has no special restrictions. Any of these filter materials can be placed on the side of shredded tobacco.

In addition, the cigarette filter according to the invention is activated carbon and porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid, can be added as an adsorbent to form paper.

Cigarette filter according to the invention can be used in the form of a cigarette mouthpiece shown in Figure 5. The mouthpiece includes a cylindrical housing 51 having converted to the mouth part 52 formed on one end, two of the filter material 2 located inside the housing 51, and a mixture of activated carbon 41 and silicon dioxide/aluminum oxide 42 as adsorbents 4 loaded in the space between the two filter materials 2.

The cigarette filter is provided on Figure 5, get using the mouthpiece of the structure shown in Figure 1. In addition, the mouthpiece, you can use the structure shown in each of the drawings Figure 2-4. THE cigarette filter of any of the types described above, a synergistic effect is provided activated carbon and porous material based on inorganic mineral containing ferrous sulfate/L-ascorbic acid, which is especially good adsorbs pyrazine and phenols.

Industrial applicability

In accordance with the present invention it is possible to get a cigarette filter, which allows you to selectively remove specific components contained in the smoke of the main flow, thus reducing the impact on the taste and aroma of the cigarette.

1. Cigarette filter containing the filter section containing filter materials, individually wrapped wrapping paper, form paper to wrap together the filter sections, and double paper covering forming the paper to connect the filter section of the cigarette section with getting the cigarette to the filter, characterized in that it contains as adsorbents activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, at least one of the filter materials or spaces is between the filter media.

2. Cigarette filter according to claim 1, characterized in that the wrapping paper or forming paper contain as adsorbents activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid.

3. Cigarette filter according to claim 1 or 2, characterized in that it contains two filter material, and a mixture of activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, filled in the space between the two filter materials.

4. Cigarette filter according to claim 1 or 2, characterized in that it contains two filter material, and a mixture of activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, dispersed in one of these filter materials.

5. Cigarette filter according to claim 1 or 2, characterized in that it contains three filter media and activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid loaded separately in the two spaces between these three filter materials.

6. Cigarette filter according to claim 1 or 2, characterized in that it contains three filter material, and activated carbon dispersed in one Phil is Trouser material, as a porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, is mixed into the other filter material.

7. Cigarette filter according to claim 1 or 2, characterized in that it also contains as an adsorbent silicon dioxide/aluminum oxide in addition to activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid.

8. Cigarette filter comprising a casing cigarette mouthpiece containing the filtering material located therein, characterized in that it contains as adsorbents activated carbon and porous material based on inorganic mineral carrying ferrous sulfate/L-ascorbic acid, at least one of the filter materials or in the space between the filter media.



 

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FIELD: cigarette industry.

SUBSTANCE: cigarette filter has filtering sections including filtering materials, individually wrapped with wrapping paper; forming paper for wrapping filtering sections together; and tip paper for covering of forming paper so as to join filtering sections with cigarette section for producing of cigarette. Cigarette filter has adsorbents such as activated carbon and silicon dioxide/aluminum oxide in at least one of filtering materials or in space between filtering materials.

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