WO2010116943A1

WO2010116943A1 - Compound filter for cigarettes

Info

Publication number: WO2010116943A1
Application number: PCT/JP2010/055998
Authority: WO
Inventors: 菅井一紀; 長谷川毅
Original assignee: 日本たばこ産業株式会社
Priority date: 2009-04-07
Filing date: 2010-04-01
Publication date: 2010-10-14
Also published as: TW201041528A; JP5361012B2; JPWO2010116943A1

Abstract

Provided is a compound filter for cigarettes, said filter having: filter elements (40) to which activated carbon particles have been added, said carbon particles supporting a platinum catalyst; and filter elements (42) to which a fragrant substance has been added. The activated carbon particles promote oxidation reactions in which CO and the like in the mainstream smoke from the cigarette are oxidized; the heat from said oxidation reactions heats the fragrant substance and increases the release of fragrance components therefrom.

Description

Composite filter for cigarette

The present invention relates to a composite filter for cigarettes, and more particularly, to a composite filter capable of sufficiently releasing a fragrance component into mainstream smoke when smoking cigarettes.

As filter cigarettes, perfume-added cigarettes obtained by adding perfumes to cigarettes or filters are known. However, when the period from the production of the fragrance-added cigarette to the smoking of the fragrance-added cigarette is long, the fragrance component is volatilized from the fragrance added to the fragrance-added cigarette during this period. Therefore, such a fragrance-added cigarette may not be able to release a sufficient amount of fragrance components into the mainstream smoke when smoking.

Under these circumstances, a fragrance-added cigarette that releases a sufficient amount of fragrance components upon combustion when smoking is proposed (Patent Document 1), and this cigarette has a wrapping paper coated with a fragrance generator.

JP-A-9-28366

The above-mentioned fragrance generating agent includes a fragrance and a special carrier that carries the fragrance, and this carrier contains a coagulable glucan that has gelled thermally irreversibly. For this reason, much labor and time are required to obtain such a perfume generating agent.
Further, the fragrance generating agent is applied to the wrapping paper, and a fragrance band is provided on the wrapping paper with a predetermined interval in the axial direction of the cigarette and extending in the circumferential direction of the cigarette. Manufacture of such a wrapping paper requires a lot of labor and time, and it is not easy to manufacture the fragrance-added cigarette disclosed in the publication.

An object of the present invention is to provide a composite filter for a cigarette that can release sufficient perfume ingredients during smoking and that can be easily manufactured.

In order to achieve the above-mentioned object, the composite filter for cigarette is a catalyst-containing element through which the mainstream smoke of cigarette can pass, and promotes the chemical reaction of the components contained in the mainstream smoke. A perfume addition comprising a catalyst-containing element comprising a catalyst that generates reaction heat due to and a perfume disposed adjacent to the catalyst-containing element and that increases the release of perfume components to mainstream smoke when heated by the reaction heat With elements.

Specifically, the catalyst is desirably granular Pt-supported activated carbon.
Further, the catalyst-containing element is a catalyst-added filter element including a rod-shaped filter material to which a catalyst is added, and the fragrance-added element is a fragrance-added filter element including a rod-shaped filter material to which a fragrance is added. Is desirable.
Furthermore, the catalyst addition filter element and the perfume addition filter element can be arranged in tandem. Therefore, when the filter cigarette having the tandem type composite filter is smoked, the catalyst-added filter element promotes an oxidation reaction such as CO contained in the mainstream smoke. Since the oxidation reaction heat here heats the fragrance in the fragrance-added filter element, the fragrance component is efficiently released from the fragrance, and as a result, the fragrance component is effectively added to the mainstream smoke.

Further, the catalyst addition filter element and the fragrance addition filter element may be arranged concentrically with each other to form a double structure. Even in this case, the fragrance | flavor addition filter element is heated favorably and discharge | release efficiency of the fragrance | flavor component from a fragrance | flavor is improved.
Further, the catalyst-containing element is a catalyst-added filter element including a rod-shaped filter material to which a catalyst is added, and the fragrance-added element is a string that is disposed in the catalyst-added filter element and impregnated with the fragrance. Good. In this case, the fragrance-added element can be easily molded.

The composite filter may further include an acetate filter element that forms the mouth end.
The composite filter may further include an auxiliary addition filter element, and the auxiliary addition filter element may include a rod-shaped filter material and granular activated carbon added to the filter material.

The composite filter for cigarettes of the present invention can release sufficient perfume ingredients during smoking and can be easily manufactured.

It is sectional drawing which showed an example of the basic concept of the composite filter for cigarettes concerning this invention. It is sectional drawing which showed the other example of the said basic concept. It is the graph which showed the relationship between the fragrance | flavor discharge | release efficiency and the fragrance | flavor component of the composite filter which concerns on this invention. 6 is a graph showing the relationship between the outer surface temperature of the composite filter according to the present invention and the number of puff operations. It is sectional drawing which was a composite filter of Example A (1) based on this invention, and showed the composite filter classified as a tandem type. It is sectional drawing which showed the composite filter of Example A (2) based on this invention. It is sectional drawing which showed the composite filter of Example A (3) based on this invention. It is sectional drawing which showed the composite filter of Example A (4) based on this invention. It is sectional drawing which showed the composite filter of Example A (5) based on this invention. It is sectional drawing which showed the composite filter of Example B (1) which concerns on this invention, and was classified as a double structure type | mold. It is sectional drawing which showed the composite filter of Example B (2) based on this invention. It is sectional drawing which showed the composite filter of Example B (3) based on this invention. It is sectional drawing which showed the composite filter of Example B (4) based on this invention. It is sectional drawing which showed the composite filter of Example B (5) based on this invention. It is sectional drawing which was a composite filter of Example C (1) based on this invention, and showed the composite filter classified as a string type. It is sectional drawing which showed the composite filter of Example C (2) based on this invention. It is sectional drawing which showed the composite filter of Example C (3) based on this invention. It is sectional drawing which showed the composite filter of Example C (4) based on this invention.

Filter cigarettes

1A and 1B shown in FIGS. 1 and 2 respectively have

basic composite filters

3A and 3B according to the present invention, and these

composite filters

3A and 3B are connected to cigarette 2 via chip paper 7. ing.
The composite filter 3A has a rod shape and has a net 6 made of stainless steel at both ends. Between these nets 6, a catalyst region 4 and a fragrance-added filter element 5 are sequentially arranged from the cigarette 2 side. These regions 4 and elements 5 are both breathable and are positioned adjacent to each other. Specifically, the catalyst region 4 includes a granular catalyst filled between the net 6 on the cigarette 2 side and the filter element 5, and the catalyst is activated carbon or activated carbon on which Pt is supported. On the other hand, the filter element 5 includes a filter material of a HEPA filter and a perfume solution carried in the filter material. The net 6 has a mesh smaller than the particle size of the catalyst, and prevents the activated carbon from dropping from the filter unit 3A.

On the other hand, the composite filter 3B includes an AF filter element 8 in place of the fragrance-added filter element 5, and the AF filter element 8 includes a filter material made of acetate fibers and a fragrance solution carried on the filter material. The composite filter 3B is shown with the net 6 at the end of the mouth end omitted.
A smoking experiment was performed on the

filter cigarettes

1A and 1B under the conditions defined by ISO, and the experimental results of FIG. 3 were obtained regarding the release efficiency of the fragrance components. In carrying out the smoking experiment, various fragrance solutions were injected into the

filter elements

5 and 8 using a syringe immediately before the smoking experiment.

In FIG. 3, the abbreviated abscissa indicates the fragrance component of the fragrance solution, and H and A indicate the cases of the filter cigarette 1A (composite filter 3A) and the filter cigarette 1B (composite filter 3B), respectively.
In addition, the fragrance | flavor component shown by the abbreviation is clear from the following Table 1.

Specifically, various fragrance solutions used in the smoking experiment were obtained by dissolving 25 μl of the fragrance components in Table 1 in 500 μl of ethanol, except when the fragrance component was Me. In addition, a fragrance solution containing a fragrance component of Me was obtained by dissolving 145.9 mg of L-menthol in 500 μl of ethanol. And the quantity of the fragrance | flavor solution inject | poured into the

filter elements

5 and 8 was 20 microliters, respectively.

filter cigarette

1A, 1B with respect to a reference filter cigarette as a reference | standard (1.0). It is a result. Here, the reference filter cigarette was obtained by injecting a fragrance solution into the filter material of a normal filter cigarette.
As apparent from FIG. 3, when the

filter elements

5 and 8 into which the fragrance solutions IA and BB containing the fragrance component having a high vapor pressure are injected are compared, the difference in the fragrance release efficiency between the

filter elements

5 and 8 is small. On the other hand, when comparing the

filter elements

5 and 8 into which a fragrance solution containing a fragrance component having a low vapor pressure is injected, the fragrance release efficiency of the filter element 5 is higher than that of the filter element 8.

This indicates that the amount of the fragrance component adsorbed on the filter element 5 is smaller than that of the filter element 8, and the filter element 5 is superior in releasing the fragrance component compared to the filter element 8. However, in any of the fragrance solutions, it can be seen that the

filter cigarettes

1A and 1B have higher fragrance release efficiency than the reference filter cigarette described above.
This is because, during smoking, the oxidation reaction of CO or the like in the mainstream smoke passing through the

composite filters

3A and 3B is promoted by the activated carbon of the catalyst-containing element 4, and the oxidation reaction heat at this time is released into the fragrance component from the fragrance solution. It is thought that it contributes greatly.

On the other hand, composite filters including different catalyst-containing elements 4 were prepared, and smoking tests were performed under the same conditions on filter cigarettes each having these composite filters. The outer surface temperature of the composite filter during the smoking test was measured, and the measurement result is shown in FIG.
In FIG. 4, straight lines AC indicate the temperature characteristics of the outer surface of the composite filter including the catalyst-containing elements 4A, 4B, and 4C, respectively. The catalyst-containing element 4A has 500 mg of activated carbon (trade name: SA1700 (Kuraray Chemical Co., Ltd.)) supporting 20 wt% Pt. The catalyst-containing element 4B has activated carbon (trade name: SA1000 (Kuraray Chemical Co., Ltd.)) supporting 5 wt% Pt. The catalyst-containing element 4C has only 500 mg of activated carbon (trade name: SA1700 (Kuraray Chemical Co., Ltd.)).

As apparent from FIG. 4, during the smoking test, the catalyst-containing elements 4A and 4B raise the outer surface temperature of the composite filter as compared with the catalyst-containing element 4C. In other words, the catalyst-containing elements 4A and 4B promote the oxidation reaction of CO or the like in the mainstream smoke more than the catalyst-containing element 4C, and the catalyst-containing elements for the

filter elements

5 and 8 including the perfume solution. 4 is excellent. Further, as apparent from FIG. 4, the temperature of the outer surface of the composite filter indicated by the straight line A rises extremely rapidly than the temperature of the outer surface of the composite filter indicated by the straight lines B and C as the puffing operation is repeated. .

Next, examples of the composite filter will be described below in applying the basic concept of the

composite filter

3A, 3B described above to an actual filter cigarette.
5 to 9 show the group of the embodiment A of the composite filter. The group of Example A is classified as a tandem type composite filter.

Specifically, the composite filter 13A of FIG. 5 includes a catalyst addition filter element 40 and a fragrance addition filter element 42, and provides a so-called dual filter. When the composite filter 13A is used, the catalyst addition filter element 40 is disposed adjacent to the cigarette. Specifically, the catalyst-added filter element 40 includes a rod-shaped (or hollow rod-shaped) filter material and granular activated carbon distributed in the filter material, and this activated carbon carries Pt. On the other hand, the fragrance | flavor addition filter 42 contains the granular perfume solid substance distributed in the filter material and the fragrance | flavor solution or the filter material directly inject | poured into this filter material. This fragrance solid material has a fragrance solution and a carrier (cyclodextrin (CD or the like)) carrying the fragrance solution. Here, a filter material made of acetate fiber or a HEPA filter material can be used as the filter material of the

filter elements

40 and 42.

Further, the catalyst-added filter element 40 and the fragrance-added filter element 42 have an inner packaging material (not shown) that encloses the filter material, and the composite filter 13A has an outer packaging material (not shown) that connects the

filter elements

40 and 42 to each other. In addition. These inner packaging materials and outer packaging materials desirably have heat insulation properties.
When the filter cigarette including the composite filter 13A of FIG. 5 is smoked, the catalyst-added filter element 40 promotes an oxidation reaction such as CO contained in the mainstream smoke. Since the oxidation reaction heat here heats the fragrance solution in the fragrance addition filter element 42, the fragrance component is efficiently released from the fragrance solution, and as a result, the fragrance component is effectively added to the mainstream smoke.

The composite filter 13A in FIG. 6 includes the composite filter 13A in FIG. 5 and a rod-shaped AF filter element 44 similar to the filter element 8 described above, and provides a so-called triple filter. The AF filter element 44 is disposed adjacent to the fragrance added filter element 42. In this case, the AF filter element 44 prevents the fragrance solution or the fragrance solid in the fragrance-added filter element 42 from dropping from the composite filter 13A, while preventing the appearance of the composite filter 13A from being impaired.

The composite filter 13A of FIG. 7 includes the composite filter 13A of FIG. 5 and the catalyst addition filter element 46, and provides a triple filter. In this case, the catalyst addition filter element 46 corresponds to the Pt-supported activated carbon in the catalyst addition filter 40 replaced with granular activated carbon, and is disposed adjacent to the catalyst addition filter element 40.
Since the composite filter 13A of FIG. 7 includes both of the catalyst

addition filter elements

40 and 46, the oxidation reaction of CO in the mainstream smoke is further promoted, and the emission efficiency of the fragrance component from the fragrance solution is further increased.

8 includes the composite filter 13A of FIG. 7 and an AF filter element 44, and the AF filter element 44 is disposed adjacent to the fragrance-added filter element 42. 9 includes the composite filter 13A, the catalyst addition filter element 46, and the AF filter element 44 shown in FIG. The catalyst unit element 46 is disposed between the fragrance addition filter element 42 and the AF filter element 44.

10 to 14 show the group of the embodiment B of the composite filter. This group of Example B is classified as a double structure type composite filter.
Specifically, the composite filter of FIG. 10 includes a filter assembly 48 and an AF filter element 44 to provide a dual filter. The filter assembly 48 has a double structure, and includes a fragrance-added filter element 42A and a catalyst-added filter element 40A surrounding the fragrance-added filter element 42A. The fragrance | flavor addition filter element 42A is the same as this filter element 42 except the point which is smaller than the above-mentioned fragrance | flavor addition filter element 42, and the catalyst addition filter element 40A is the above-described catalyst addition except that the catalyst addition filter element 40A has a tubular shape. Same as filter element 40.

10, the catalyst-added filter element 40A and the fragrance-added filter element 42A are adjacent to each other in the radial direction of the composite filter. Therefore, when the mainstream smoke passes through the catalyst-added filter element 40A, the heat due to the oxidation reaction of CO is quickly transmitted from the outer peripheral surface of the fragrance-added filter element 42A to the inside thereof. As a result, the fragrance | flavor addition filter element 42A is heated favorably, and the discharge | release efficiency of the fragrance | flavor component from a fragrance | flavor solution is improved.

11 provides a dual filter including a filter assembly 48 and a fragrance addition filter 42, and the composite filter of FIG. 12 provides a dual filter including a filter assembly 50 and an AF filter element 44. The filter assembly 50 includes a catalyst addition filter element 40B and a fragrance addition filter element 42B surrounding the catalyst addition filter element 40B. The filter element 40B and the filter element 42B are the catalyst addition filter element 40 and the fragrance addition filter described above. Only the shape of the element 42 is different.

The composite filter of FIG. 13 provides a dual filter that includes a filter assembly 50 and a fragranced filter element 42. 14 provides a triple filter including the composite filter of FIG. 12 and the AF filter 44. The AF filter 44 is disposed adjacent to the fragrance addition filter 42.

15 to 18 show a group of the composite filter according to the embodiment C, and the group of the embodiment C is classified as a string-type composite filter.
The composite filter of FIG. 15 provides a dual filter that includes a filter assembly 52 and an AF filter element 44. The filter assembly 52 includes a fragrance-added string 54 and a catalyst-added filter element 40 </ b> A that surrounds the fragrance-added string 54. The fragrance-added string 54 is obtained by impregnating a fragrance solution into a string material made of cloth or the like.

In the case of the composite filter of FIG. 15, the catalyst-added filter element 40A can be molded with the fragrance-added string 54 as a core. Therefore, the filter assembly 52 can be easily formed as compared with the

filter assemblies

48 and 50 described above.
The composite filter of FIG. 16 provides a tandem filter that includes a filter assembly 52 and a perfume filter 42. The composite filter of FIG. 17 provides a tandem filter that includes

filter assemblies

52, 58. The filter assembly 58 includes a fragrance-added string 54 and an AF filter element 44A that surrounds the fragrance-added string 54. The AF filter element 44A differs from the AF filter element 44 only in shape. The composite filter of FIG. 18 provides a tandem filter including

filter assemblies

52A and 58A, and these

filter elements

52A and 58A are different from the

filter elements

52 and 58 only in that they have a plurality of fragrance-added strings 54 inside. Different.

In any of the composite filters of FIGS. 15 to 18, since the oxidation reaction of CO or the like in the mainstream smoke is promoted by the catalytic action, the fragrance solution of the fragrance addition string 54 is heated well by the oxidation reaction heat. it can. Therefore, the fragrance component is released well from the fragrance solution, and when smoking, the smoker can taste mainstream smoke containing sufficient fragrance component.
Although the description of one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the technical idea of the present invention.

For example, the fragranced filter element 42 may include a heat disintegrating capsule or a water disintegrating capsule filled with a fragrance solution, and these capsules are distributed within the fragranced filter element 42.
The perfume solution is not limited to the heat of oxidation reaction described above, and may be heated by reaction heat generated by a reduction reaction with components in mainstream smoke.

Further, if the above-described composite filter does not include the AF filter element 44 or the catalyst addition filter element 46, it is possible to further add

filter elements

44 and 46 to the composite filter.

1A, 1B Filter cigarette 2

Cigarette

3A, 3B Composite filter 4 Catalyst region (catalyst containing element)
4A, 4B, 4C Catalyst-containing element 5 Fragrance addition filter element 6 Net 7 Chip paper 8 AF filter element 13A Composite filter 40 Catalyst addition filter element 42 Fragrance addition filter element 44 AF filter element 46 Catalyst addition filter element (auxiliary addition filter)
48, 50, 52 Filter assembly 54 Perfume string 58 Filter assembly

Claims

A catalyst-containing element through which mainstream smoke of cigarette can pass, the catalyst-containing element including a catalyst that promotes a chemical reaction of components contained in the mainstream smoke and generates heat of reaction due to the chemical reaction;
A composite filter for cigarette comprising a perfume additive element disposed adjacent to the catalyst-containing element and including a perfume that increases the release of perfume ingredients into the mainstream smoke when heated by the heat of reaction .
The composite filter according to claim 1, wherein the catalyst is granular Pt-supported activated carbon.
The catalyst-containing element is a catalyst-added filter element including a rod-shaped filter material to which the catalyst is added,
The composite filter according to claim 2, wherein the fragrance-added element is a fragrance-added filter element including a rod-shaped filter material to which the fragrance is added.
The composite filter according to claim 3, wherein the catalyst addition filter element and the fragrance addition filter element are arranged in tandem.
The composite filter according to claim 3, wherein the catalyst-added filter element and the fragrance-added filter element are arranged concentrically with each other to form a double structure.
The catalyst-containing element is a catalyst-added filter element including a rod-shaped filter material to which the catalyst is added,
The composite filter according to claim 2, wherein the fragrance-added element is a string disposed in the catalyst-added filter element and impregnated with the fragrance.
The composite filter according to claim 4, further comprising an acetate filter element forming a mouth end.
5. The composite filter of claim 4, further comprising an auxiliary additive filter element, the auxiliary additive filter element having a rod-shaped filter material and granular activated carbon added to the filter material.