EP2789249A1 - Filtre à cigarette et cigarette - Google Patents
Filtre à cigarette et cigarette Download PDFInfo
- Publication number
- EP2789249A1 EP2789249A1 EP12856496.0A EP12856496A EP2789249A1 EP 2789249 A1 EP2789249 A1 EP 2789249A1 EP 12856496 A EP12856496 A EP 12856496A EP 2789249 A1 EP2789249 A1 EP 2789249A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- particles
- cigarette
- rate control
- filtration rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
Definitions
- the present invention relates to a cigarette filter and a cigarette comprising the same.
- a filter having a cellulose acetate fiber tow as a filter material is widely used.
- the acetate filter is known to have selective filtering characteristics such that the filtration efficiency of semivolatile components is higher than the filtration efficiency of tar in cigarette mainstream smoke.
- the semivolatile component is a component present in both the particulate and vapor phases of cigarette mainstream smoke, and includes a nitrogen-containing compound, ketones, and phenols. These semivolatile components have an effect on cigarette smoking taste, and thus it may be desired that the components are not significantly removed by the filter.
- Patent Document 1 discloses a tobacco smoke filter which is substantially formed of cellulose acetate microfilaments having an average diameter of 20 to 250 ⁇ m as a tobacco smoke filter for removing harmful components from tobacco smoke. Patent Document 1 also discloses that the microfilaments are mixed with a normal cellulose acetate fiber tow. However, Patent Document 1 does not teach of the semivolatile components, though it discloses that the filter is excellent in removal efficiency of tar in tobacco smoke.
- Patent Document 1 Jpn. Pat. No. 3939823
- An object of the present invention is to provide a cigarette filter which does not significantly remove a semivolatile component in cigarette mainstream smoke and a cigarette comprising the same.
- a cigarette filter comprising a filter plug that includes a filter material containing:
- a filter-tipped cigarette comprising:
- the cigarette filter of the present invention does not significantly remove the semivolatile component in cigarette mainstream smoke.
- the cigarette filter of the present invention comprises a filter plug which includes a filter material containing a cellulose acetate fiber tow.
- Filtration rate control particles are dispersed in the cellulose acetate fiber tow.
- the term "dispersed" used herein generally means that the filtration rate control particles are almost uniformly distributed over the entire inside of the cellulose acetate fiber tow (refer to FIG. 1 ), and the distribution may be weighted toward the side of a cigarette mouthpiece or the side of a cigarette rod.
- the filtration rate control particles play a role in controlling to reduce the filter-filtration rate of the semivolatile components in cigarette mainstream smoke.
- the filtration rate control particles are selected from cellulose particles, cellulose triacetate particles, and a mixture thereof.
- Cellulose triacetate particles have an average acetyl substitution degree of 2.76 to 3.00, preferably an average acetyl substitution degree of 2.8 to 3.0, according to the definition of Japan Chemical Fibers Association.
- the average acetyl substitution degree may be measured in accordance with the titration method: ASTM D871-96.
- the acetyl substitution degree of the cellulose acetate which is determined by the measuring method shows a normal distribution. Accordingly, it is defined as the "average acetyl substitution degree".
- the cellulose acetate fibers may be bound with a plasticizer such as triacetin to form a tow.
- the cellulose acetate fibers are extended in parallel to one another over the total length of the filter.
- the cellulose acetate fibers forming the cellulose acetate fiber tow may be cellulose acetate fibers to be used for normal cigarette filters.
- the cellulose acetate fibers may have a single fineness of 1.5 to 8 deniers and have a sectional shape, such as a circular shape, an oval shape, a Y-shape, an X-shape or an I-shape.
- the cellulose acetate fibers may be formed of cellulose acetate having an acetyl substitution degree of 2.4 to 2.5 (diacetate).
- the total fineness of the cellulose acetate fiber tow may be normally from 15000 to 50000 deniers.
- the cellulose acetate fiber tow is labeled as 1.9Y44000.
- the single fineness is 1.9 deniers
- the fiber cross section has a Y-shape
- the total fineness is 44000 deniers, as well known by those skilled in the art.
- the unit of the single fineness "denier” represents a weight of a piece of fiber per 9000 m (g/9000 m)
- the unit of the total fineness "denier” represents a weight of all pieces of fiber per 9000 m (g/9000 m).
- the cellulose particles hardly adsorb the semivolatile components in cigarette mainstream smoke and hardly adsorb menthol either (refer to Examples 1 and 2 below). Further, the cellulose triacetate particles hardly adsorb the semivolatile components in cigarette mainstream smoke and hardly adsorb menthol either (refer to Examples 1 and 2 below). As described above, the filtration rate control particles hardly adsorb menthol. Therefore, in the case where a cigarette filter of the present invention is applied to a menthol cigarette, there is a low possibility that menthol is significantly adsorbed by the filter after production of the cigarette up to when it is smoked by a smoker, and the menthol content in mainstream smoke is hard to be decreased during smoking of the cigarette.
- the filtration rate control particles have a granular shape.
- the average sphere equivalent diameter of the filtration rate control particles is preferably from 100 to 1000 ⁇ m, more preferably greater than 250 ⁇ m, from the viewpoints of the hardness and draw resistance of the filter, the filtration performance, and the easiness of production of the filter.
- a normal charcoal filter production machine may be directly used (in that case, needless to say, the filtration rate control particles are used in place of charcoal particles).
- the average sphere equivalent diameter may be obtained by measuring the particle size distribution using a particle size distribution measurement device and calculating the 50% median size of the sphere equivalent diameter, as described in the following examples.
- the BET specific surface area of the filtration rate control particles is preferably less than 5 m 2 /g. The BET specific surface area may be determined according to a well-known BET method.
- the filtration rate control particles may be obtained with a compression type granulating machine. Specifically, they may be obtained with the compression type granulating machine in the following manner. First, the material of cellulose particles or cellulose triacetate particles is ground into powder. The resulting ground product and various additives are mixed with a precision mixer. Thereafter, the resulting mixture is compaction-molded using a dry granulator while applying a pressure with a roller, and a molded product (e.g., a plate-shaped product) is obtained. Subsequently, the molded product is crushed with a dry particle-size selector. At this time, it is roughly crushed at the first stage, and then it may be crushed into a desired particle size at the second stage.
- a dry particle-size selector e.g., a plate-shaped product
- the resulting crushed product is passed through a sieving machine to screen granules having a predetermined particle size.
- the filtration rate control particles are prepared.
- the filtration rate control particles obtained with the compression type granulating machine are excellent in terms of high yield and fewer problems due to the mixing of long fiber during winding of the filter.
- the cellulose triacetate particles may be obtained by grinding cellulose triacetate flakes and classifying them.
- the cellulose triacetate particles may be obtained by granulating cellulose triacetate flakes with a well-known granulating machine such as of a tumbling type, an extrusion type, a fluid-bed type, a stirring type or a compression type. Further, the cellulose particles are commercially available.
- the filtration rate control particles account for 1.5 to 30% by volume of the volume of the filter containing the filtration rate control particles. Further, when considering the production of the filter, if the volume ratio of the added particles increases, the production tends to be difficult. Thus, in order to satisfy the results of the filtration rate control and the sensory evaluation without having any effect of the particles on the production of the filter, the filtration rate control particles more preferably account for 1.5 to 16% by volume of the volume of the filter containing the filtration rate control particles (refer to Examples 3 and 4 below).
- Such ratio of the filtration rate control particles can achieve a draw resistance of 35 mm H 2 O to 180 mm H 2 O, which is considered to be suitable for the draw resistance of a filter having a circumference of 24.5 mm and a length of 25 mm.
- the addition weight and the apparent density obtained using a mercury porosimeter were used to calculate the volume of the particles.
- the filtration rate control particles are added to the cellulose acetate fiber tow, the hardness of the resulting filter plug increases. Therefore, triacetin as the plasticizer does not need to be added. Even when triacetin is added as the plasticizer, the addition amount of triacetin as the plasticizer may be decreased. For example, when the filtration rate control particles are added to the cellulose acetate fiber tow at the above ratio, a sufficient hardness of the filter plug is obtained by adding triacetin in an amount of 3% by weight or less based on the cellulose acetate fiber tow or not adding (refer to Example 1 below).
- the hardness of the filter plug may be expressed as the amount of strain of the filter plug when an indenter having a diameter of 12 mm is pressed against the filter plug under a 300 g loading for 10 seconds. As the amount of strain is smaller, the filter plug is harder.
- the addition amount of the plasticizer is decreased or the plasticizer is not added to the filter.
- the permeability of semivolatile components can be further improved (refer to Example 6 below).
- the total outer peripheral surface area of the cellulose acetate fiber can be decreased by 10% or more (usually, 30% or less), as compared to the case where the filtration rate control particles are not added.
- the permeability of semivolatile components is further improved (refer to Examples 4 and 5 below).
- the smoking flavor can be changed as compared with the case where a filter not containing the filtration rate control particles is used for the cigarette (refer to Example 3 below).
- an additive may be added to the filtration rate control particles.
- Example 7 demonstrates that even if an additive contributing to cigarette smoking flavor is added to the filtration rate control particles, no influence is given to the selective permeation of the semivolatile components.
- the additive may be a component for smoking flavor (e.g., a flavorant) or a component having an effect on the smoking flavor (e.g., a humectant, amino acid, polysaccharide or dietary fiber). Both the components are collectively referred to as a "component contributing to smoking flavor”.
- the addition amount of the component contributing to smoking flavor is preferably 10% by weight or less, and more preferably 5% by weight or less, based on the total weight of the particles (the total weight of the filtration rate control particles and the component contributing to smoking flavor).
- the component contributing to smoking flavor include the following flavorants, humectants, amino acids, polysaccharides, and dietary fibers.
- the flavorants may be synthetic flavorants, natural flavorants, essential oils, and the like. Further, they may be used regardless of lipophilicity or hydrophilicity.
- lipophilic flavorants include vanillin, ethyl vanillin, guarlinalool, thymol, methyl salicylate, linalool, eugenol, menthol, clove, anise, cinnamon, bergamot oil, geranium, lemon oil, spearmint, and ginger.
- hydrophilic flavorants include glycerin, propylene glycol, ethyl acetate, and isoamyl alcohol.
- humectants examples include:
- amino acids examples include amino acids and salts thereof (amino acid salts).
- the amino acid may be any of a neutral amino acid (monoamino monocarboxylic acid etc.), an acidic amino acid (monoamino dicarboxylic acid etc.), and a basic amino acid (diaminomonocarboxylic acid etc.), or may be a sulfur-containing amino acid.
- the amino acid may be an ⁇ -amino acid, ⁇ -amino acid, ⁇ -amino acid, or the like. Particularly, it may be an ⁇ -amino acid.
- the amino acid may be either an optically active form (D-form, L-form, etc.) or a racemate.
- amino acids include polyamino acids having a low polymerization degree (e.g., a polymerization degree of 2 to 9, preferably a polymerization degree of 2 to 5, more preferably a polymerization degree of 2 to 3).
- the amino acid may have a substituent or may be an amino acid derivative in which at least a part of the carboxyl group(s) or the amino group(s) is derivatized.
- at least a part of the carboxyl group(s) in the amino acid may be a derivatized carboxyl group (e.g., an amide group).
- Examples of a typical amino acid include:
- components contributing to smoking flavor include food additives such as xylitol and mannitol; polymers such as lignin; and polysaccharides or dietary fibers such as cellulose, carboxymethyl cellulose, hydroxypropyl methylcellulose, chitin, starch, glycogen, guar gum, glucomannan, sodium alginate, agarose, chitosan, pectin, carrageenan, and xanthan gum.
- food additives such as xylitol and mannitol
- polymers such as lignin
- polysaccharides or dietary fibers such as cellulose, carboxymethyl cellulose, hydroxypropyl methylcellulose, chitin, starch, glycogen, guar gum, glucomannan, sodium alginate, agarose, chitosan, pectin, carrageenan, and xanthan gum.
- a dye may be added to the filtration rate control particles.
- the dye for example, a natural dye extracted from gardenia, safflower, turmeric, annatto, red pepper, paprika, red yeast rice, red cabbage, cacao or the like may be added.
- the dye may be added in an amount of 0.1 to 5% by weight based on the total weight of the particles (total weight of the filtration rate control particles and the dye). Preferably, it may be added in an amount of 1% by weight or less.
- the filtration rate control particles containing the dye may have various colors depending on the color of the dye.
- the filtration rate control particles (granules) with which the filter is loaded can be confirmed from the outside. It is known that human feelings can be influenced by color. Accordingly, it is expected that a new feeling is provided to the smoking taste of the cigarette by the color of the dye. Further, when the color of the filtration rate control particles is different from that of the filter fiber, as with charcoal filter, it is possible to easily distinguish between the filtration rate control particles and the filter fiber in the quality inspection in manufacturing the filter.
- the filter of the present invention may be attached to one end of a cigarette rod singly or in combination with another filter plug. The latter example is shown in FIG. 1 .
- FIG. 1 is a schematic view of a cigarette 10 comprising the filter according to one embodiment of the present invention.
- the cigarette 10 comprises a cigarette rod 110 and a filter 120 which is provided at an end in the axial direction of the cigarette rod 110 in such a manner that the end surface of the filter comes in contact with the end surface of the cigarette rod.
- the cigarette rod 110 includes a tobacco filler 112 such as tobacco shreds wrapped in a cigarette paper 111.
- the filter 120 comprises a filter plug 121 of the present invention which includes a tow 122 of a lot of cellulose acetate fibers 123 which are disposed along the axial direction of the filter 120 and may be bundled with a plasticizer such as triacetin.
- Each of the cellulose acetate fibers 123 is extended over the total length of the filter plug 121.
- the filtration rate control particles 124 are dispersed in the cellulose acetate fiber tow 122.
- the filter plug 121 is wrapped in a filter wrapping paper 125.
- the cigarette rod 110 and the filter 120 are connected with a tipping paper 130, similarly to a normal filter-tipped cigarette.
- a plurality of ventilation holes 131 may be punched in the tipping paper 130 in one or more rows in the circumferential direction of the filter.
- a so-called acetate plain filter plug 140 of a cellulose acetate fiber tow 142 wrapped in a filter wrapping paper 141 may be attached to the posterior end of the filter 120 including the filtration rate control particles (to the direction of smoke inhalation). In this case, the filter plug 140 is also wrapped in the tipping paper 130.
- Cellulose triacetate flakes (average acetyl substitution degree: 2.86) were purchased from Daicel Chemical Industries, Ltd. The acetyl substitution degree of the cellulose triacetate flakes was measured in accordance with the titration method: ASTM D871-96. Then, the above-mentioned acetyl substitution degree was confirmed. Subsequently, the cellulose triacetate flakes were ground with a coffee mill (MK-52M manufactured by Matsushita Electric Industrial Co., Ltd.). The ground product was classified through a sieve with an electromagnetic sieve shaker (AS200 control, manufactured by Retsch) to obtain particles at mesh intervals of 300 to 710 ⁇ m.
- AS200 control electromagnetic sieve shaker
- the 50% median size of the sphere equivalent diameter was calculated as the average particle size using a digital-image-analysis type particle size distribution meter (manufactured by Retsch, (sold at HORIBA, Ltd.)).
- the average sphere equivalent diameter was 550 ⁇ m
- the bulk density was 0.54 g/cc
- the apparent density obtained by using a mercury porosimeter was 0.71 g/cc
- the BET specific surface area obtained by nitrogen desorption method was 4.6 m 2 /g.
- Cellulose particles were cellulose beads obtained by refining and dissolving wood and forming the resulting viscose into a granular and porous form, and those marketed under the trademark of Viscopearl in Rengo Co., Ltd. were used. Regarding the used particles, the average sphere equivalent diameter was 400 ⁇ m, the bulk density was 0.20 g/cc, the apparent density obtained by using a mercury porosimeter was 0.34 g/cc, and the BET specific surface area was below the detection limit.
- the cellulose particles or cellulose triacetate particles were added to an acetate filter containing triacetin in the same manner as a generally known method for producing a charcoal filter. Further, plain acetate filters not containing filtration rate control particles were also produced.
- a filter wrapping paper for each filter plug one having a basis weight of 24.0 ⁇ 1.5 g/m 2 , a thickness of 60 ⁇ 5 ⁇ m, and an air permeability of 10,000 ⁇ 1,800 Coresta unit was used.
- the diameter of each of the filter plugs was 7.7 mm and the length was 120 mm.
- the draw resistance of each of the filters was measured according to ISO6565: 2002.
- the hardness of the resulting filter plugs was measured as the amount of strain of the filter plug when an indenter having a diameter of 12 mm was pressed against the filter plug under 300 g loading for 10 seconds.
- Table 1A Filters containing cellulose triacetate particles Filter Nos. Specification of cellulose acetate fiber tow Amount of triacetin (% by weight) Draw resistance per length of 120 mm (mmH 2 O) Addition amount of particles per filter length of 10 mm (mg/10mm) Filter hardness (mm) A-1 3.5Y/35000 6 418 35 0.71 A-2 5.9Y/35000 6 319 35 0.54 A-3 2.2Y/35000 6 570 35 0.82 A-4 3.5Y/35000 9 396 35 0.63 A-5 3.5Y/35000 0 420 35 1.2 A-6 5.9Y/35000 6 423 70 0.42 [Table 1B] Table 1B: Filters containing cellulose particles Filter Nos.
- the hardness of the filters (A-1 to A-6) containing cellulose triacetate particles was from 0.42 to 1.2 (mm).
- the hardness of the filters (B-1 to B-6) containing cellulose particles was from 0.48 to 0.97 (mm).
- the hardness of the acetate plain filters (AF-1 and AF-2) not containing triacetin was 1.6 (mm). Therefore, it was found that the hardness of the filters is increased by the inclusion of the particles in the filters containing cellulose particles and the filters containing cellulose triacetate particles. When the addition amount of the particles is increased, the hardness of the filters can be guaranteed regardless of the addition of triacetin.
- the Cambridge filter having the particulate matter collected, 10 mL of a methanol solution containing the cigarette smoke collected, and 1 mL of an internal standard solution (d-32 pentadecane: 0.05 mg/mL, d-1-ethanol: 150 mL/L, anethole: 2 mL/L, 1,3-butanediol: 4 mL/L) were added to a serum bottle, which was shaken for 30 minutes. After shaking, the supernatant liquid was collected and used as a sample for analysis.
- the above operation was also performed on the cigarette rod (control cigarette) obtained by removing the filter of the commercially available filter-tipped cigarette "Mild Seven Aqua Squash Menthol".
- GC-MSD gas chromatography-mass spectrometry
- a x , in” and “A x, out” represent values obtained by standardizing the peak areas of a component "x" in smoke of the control cigarette and each of the filter-tipped cigarette sample, respectively, by the internal standard.
- Ex represents a filtration rate of the component "x”.
- the semivolatile components 3-furaldehyde, 2-acetylfuran, and furfural were selected as typical semivolatile components.
- the average permeability of the components was calculated, and the selective filtration performance of the semivolatile components was evaluated.
- FIG. 2(A) shows the permeability of tar
- FIG. 2(B) shows the permeability of nicotine
- FIG. 2(C) shows the permeability of the typical semivolatile components.
- the circles relate to CAF-3-1 to CAF-3-5
- the triangles relate to CAF-4-1 to CAF-4-5.
- the permeability can be linearly approximated regardless of the kind of the cellulose acetate tow fiber.
- the permeability has a different slope depending on the kind of the tow fiber (the diameter of the fiber). This shows that the permeability of tar and nicotine is regulated by only the draw resistance of each filter; however, the permeability behavior of the typical semivolatile components varies depending on the kind of the tow. Since the tar and nicotine are basically particulate phase components, the filtration efficiency may be represented as a function of the draw resistance of each filter.
- the semivolatile components are distributed to both the vapor phase and the particulate phase, and thus the permeability behavior is influenced by filtration of the particulate phase component and absorption of the vapor phase component to the fiber. As a result, it is not regulated by only the draw resistance.
- FIG. 3(A) shows the permeability of tar
- FIG. 3(B) shows the permeability of nicotine
- FIG. 3(C) shows the permeability of the typical semivolatile components.
- a line 'a' relates to CAF-3-1 to CAF-3-3 and CAF-4-4 to CAF-4-5
- a line 'b' relates to the cigarettes CA-1 to CA-5
- a line 'c' relates to the cigarettes CB-1 to CB-5.
- a line 'a' relates to CAF-3-1 to CAF-3-5
- a line 'b' relates to CAF-4-1 to CAF-4-5.
- FIGS. 3(A) and 3(B) show that the filter containing the filtration rate control particles of the present invention has a high permeability of tar and nicotine as compared to that of the acetate plain filter, in other words, it has a low filtration rate of tar and nicotine.
- FIG. 3(C) it is found that the filter containing the filtration rate control particles of the present invention has a high permeability of the semivolatile components as compared to the acetate plain filter. That is, the filtration rate control particles of the present invention allow the permeation of the semivolatile components to be significantly improved.
- the present inventors have demonstrated that the filter containing the cellulose diacetate particles (average acetyl substitution degree: 2.4 to 2.5) has a function in filtrating the semivolatile components and hardly allows the semivolatile components to be permeated as compared to the acetate plain filter.
- the filter containing the filtration rate control particles of the present invention has a different filtration rate of tar from that of the acetate plain filter.
- E TPM represents the filtration rate of crude tar (the total particulate matter).
- the selective filtration coefficient S x thus calculated was plotted against the filter draw resistance.
- the results are shown in FIG. 4 .
- a line 'a' relates to the cigarettes CAF-4-1 to CAF-4-5
- a line 'b' relates to CAF-3-1 to CAF-3-5.
- the results shown in FIG. 4 show the following.
- the selective filtration coefficient of the filter containing the filtration rate control particles of the present invention is decreased as compared to that of the acetate plain filter in any case of filter draw resistance. Even if the filtration rate of tar is taken into consideration, the semivolatile components are permeated selectively.
- the addition amount of triacetin acts in the direction where the semivolatile components are permeated. If the addition amount of triacetin is large, it acts in the direction where the semivolatile components are filtrated.
- the permeability of the typical semivolatile components can also be controlled by the amount of triacetin. This is because the vapor of the semivolatile components is absorbed (adsorbed) into triacetin on the surface of the cellulose acetate fiber. It is considered that if the addition amount of triacetin is decreased, the adsorption amount of the semivolatile components decreases.
- the filter containing the filtration rate control particles of the present invention even if the addition amount of triacetin is decreased, the filter hardness can be guaranteed. Therefore, a filter which allows the semivolatile components to be more selectively permeated can be achieved by decreasing the addition amount of triacetin.
- the filter containing the filtration rate control particles of the present invention is effective in the selective permeation of the semivolatile components in view of the design of the filter and the easiness in production, although the selective permeation of the semivolatile components can also be controlled by the diameter of cellulose acetate fibers forming a tow and the amount of triacetin.
- the filter of the present invention When the filter of the present invention is intended to be used for a menthol tobacco product, if the adsorption of menthol to the filtration rate control particles of the present invention is continued, the amount of menthol in mainstream smoke is decreased. Therefore, the adsorption amount of menthol to the filtration rate control particles of the present invention was examined.
- an acetate plain filter (cellulose acetate fiber tow: 1.9Y44000, weight: 30 mg, filter length: 5 mm) was attached to an end of a cigarette rod (circumference: 24.9 mm, length: 59 mm) having 640 mg of tobacco shreds containing 0.59% by weight of menthol.
- a mentholated acetate filter (cellulose acetate fiber tow: 2.5Y35000, weight: 90 mg, filter length: 15 mm) in which a menthol-containing string was threaded through the center of the filter was arranged at a distance of 5 mm from the acetate plain filter.
- the cavity between both the filters was filled with the filtration rate control particles of the present invention (cellulose particles or cellulose triacetate particles prepared in Example 1).
- the content of menthol in the mentholated acetate filter was 1.99% by weight.
- a cigarette whose cavity is filled with cellulose particles as the filtration rate control particles is designated as a cigarette A, while a cigarette whose cavity is filled with cellulose triacetate particles as the filtration rate control particles is designated as a cigarette B.
- the cigarettes thus produced were placed in a glass bottle and sealed, followed by storage at 50°C for two weeks.
- the cigarette samples after the storage were taken out from the glass bottle.
- the content of menthol in each of tobacco shreds, acetate plain filters, filtration rate control particles, and mentholated acetate filters was quantified.
- the content of menthol was quantified by performing methanol-extraction of the samples to be measured (tobacco shreds, acetate plain filters, filtration rate control particles or mentholated acetate filters) and analyzing the methanol-extract with a gas chromatograph (6890 series, manufactured by HEWLETT PACKARD). In the preliminary test, it was confirmed that menthol was extracted with methanol.
- Table 3 The content of menthol in each of tobacco shreds, acetate plain filters, filtration rate control particles, and mentholated acetate filters is shown in Table 3 below.
- Table 3 Content of menthol (unit: % by weight) Tobacco shreds Acetate plain filter Filtration rate control particles Mentholated acetate filters Before storage 0.59 0 0 1.99 After storage Cigarette A 0.56 2.03 Cellulose particles 0.20 1.97 Cigarette B 0.43 2.30 Cellulose acetate particles 0.22 2.23
- the filtration rate control particles of the present invention (cellulose particles and cellulose triacetate particles) hardly adsorb menthol. Therefore, even if the filter of the present invention containing the filtration rate control particles is used for a menthol tobacco product, the undesired adsorption of menthol to the filtration rate control particles is hardly caused, and thus the menthol smoking taste can be sufficiently experienced.
- Filter-tipped cigarettes having the structure shown in FIG. 1 were produced.
- the tipping paper having ventilation holes punched and a filter were removed from the commercially available filter-tipped cigarette "Mild Seven Aqua Squash Menthol 7 Box", and the obtained cigarette rod was used as the cigarette rod 110 (content of menthol in tobacco shreds: 0.55% by weight).
- Each of the filters A-1 and A-6 shown in Table 1A, the filters B-1 and B-6 shown in Table 1B, and the filter AF-3 shown in Table 1C was cut into a length of 10 mm so that the filter draw resistance is 35 ⁇ 2 mm H 2 O so as to almost constantly keep the amounts of tar, nicotine, and menthol in cigarette mainstream smoke, and the obtained filter plugs were used as the filter plug 121.
- the acetate plain filter 140 (cellulose acetate fiber tow: 5.0Y35000 (containing 6.9% by weight of triacetin); filter length: 17 mm, menthol content: 2.22% by weight) was attached to the rear end of the filter plug 121.
- the filter plugs 121 and 140 were connected to the cigarette rod using the tipping paper.
- Table 4 Cut filters Filter plug Nos. (before cutting) Filter length after cutting (mm) Draw resistance (mmH 2 O) Marks of cigarettes comprising cut filters A-1 10 35 ⁇ 2 CA-1-2 A-6 10 35 ⁇ 2 CA-6-2 B-1 10 35 ⁇ 2 CB-1-2 B-6 10 35 ⁇ 2 CB-6-2 AF-3 10 35 ⁇ 2 CAF-3-1-2
- Table 5 Amounts of tar, nicotine and menthol in mainstream smoke per cigarette, as well as puff number Cigarette Tar (mg) Nicotine (mg) Menthol (mg) Puff number CAF-3-1-2 7.9 0.55 0.40 6.9 CB-1-2 8.8 0.62 0.45 6.9 CA-6-2 8.9 0.64 0.45 6.9
- evaluation panelists evaluated the smoking taste of the cigarettes.
- the evaluation panelists felt the difference in smoking taste between the cigarettes CB-1-2 and CB-6-2 and the control cigarette CAF-3-1-2.
- the characteristics of the smoking flavor of the cigarettes CB-1-2 and CB-6-2 they detected menthol strongly and clearly.
- Acetate plain filter plugs of various draw resistances (filter length: 10 mm; draw resistance: 14 to 58 mm H 2 O) and filter plugs containing the filtration rate control particles of the present invention shown in Table 6 below were produced, and the draw resistance thereof was measured.
- the total of the outer peripheral surface areas of each single fiber (the total outer peripheral surface area) was calculated in the following manner based on the article ( Kazuo Maeda "Research on Development of Tobacco Smoke Filter"), Central Research Institute, Japan Tobacco Inc., December 1983, pages 27 to 30 ).
- the fiber length is calculated by removing the amount of triacetin from the actually measured weight of the acetate tow to obtain a net weight of the acetate tow and dividing the net weight of the acetate tow by a weight obtained by converting the total fineness into a weight per filter length.
- the draw resistance of each filter is plotted against the total outer peripheral surface area of each cellulose acetate fiber, and the results are shown in FIG. 6 .
- the black rhombuses relate to acetate plain filter plugs
- the white triangles relate to filter plugs containing cellulose particles
- the white squares relate to filter plugs containing cellulose triacetate particles.
- FIG. 6 shows that, in any case of the draw resistance, the filter plugs containing the filtration rate control particles of the present invention have a smaller total outer peripheral surface area of the cellulose acetate fiber as compared to that of the acetate plain filter plugs.
- a reduction rate of the total outer peripheral surface area of the cellulose acetate fiber is about from 10 to 30%. Therefore, in the case where the filtration rate control particles of the present invention are added, a cellulose acetate fiber tow having a smaller total outer peripheral surface area can be used as compared to the case where the particles are not added, in producing filter plugs having the same draw resistance.
- Table 7A Filters containing cellulose particles (average particle size: 700 ⁇ m) Filter Nos.
- the permeability of the typical semivolatile components is plotted against the total outer peripheral surface area of the cellulose acetate fiber, and the results are shown in FIG. 7 .
- the white triangles relate to the cigarettes CB-5 and CB2-4
- the white squares relate to the cigarette CA-5
- the white circles relate to the cigarettes CAF-1-1 to CAF-1-5
- the white rhombuses relate to the cigarettes CAF-2-1 to CAF-2-5.
- the plasticizer is not contained in the filter plugs of any of the above-mentioned cigarettes.
- the black triangles relate to the cigarettes CB-1, CB-2, CB-3, CB-6, CB2-1, CB2-2, and CB2-5
- the black squares relate to the cigarettes CA-1, CA-2, CA-3, and CA-6
- the black circles relate to the cigarettes CAF-3-1 to CAF-3-5
- the black rhombuses relate to the cigarettes CAF-4-1 to CAF-4-5.
- the plasticizer is contained in the filter plugs of all the above-mentioned cigarettes.
- the permeability of the typical semivolatile components in each of the acetate plain filter plugs is largely dependent on the addition amount of the plasticizer (triacetin); however, in the case of the same amount of the plasticizer, the permeability of the typical semivolatile components is determined by the total outer peripheral surface area of the cellulose acetate fiber. Further, it is found that the particle size of cellulose particles has no influence on the filtering characteristics of the semivolatile components.
- FIG. 7 shows that the selective filtering characteristics of the semivolatile components can be controlled by changing the kind of the cellulose acetate fiber tow or the addition amount of the plasticizer.
- a certain level of hardness of the filter needs to be guaranteed and the draw resistance needs to be controlled when setting the amounts of tar and nicotine in mainstream smoke, it is not possible to freely combine the kind of the cellulose acetate fiber tow and the addition amount of the plasticizer for cigarette products.
- the filtration rate control particles cellulose particles and/or cellulose triacetate particles
- the constant hardness of the filter can be maintained by the presence of the particles even if the addition amount of triacetin is decreased, and the draw resistance can be controlled by the addition of the particles in order to adjust the amount of tar/nicotine in mainstream smoke to a desired value. Therefore, the cellulose acetate fiber tow regarded as unusable in the prior art (i.e., a cellulose acetate fiber tow whose total outer peripheral surface area is small) can be used according to the present invention. In other words, generally, as the total outer peripheral surface area of the cellulose acetate fiber becomes smaller, the draw resistance of the filter plug tends to decrease.
- a cellulose acetate fiber tow having the draw resistance lower than that of the cellulose acetate fiber tow of the conventional cigarette filter can be used.
- a filter having characteristics in which the semivolatile components are permeated selectively as compared to tar can be used.
- the present invention is effective in providing new tobacco smoking flavor or new menthol tobacco smoking flavor.
- the cellulose powder (FMC Biopolymer, trade name: Endurance MCC) and the cellulose triacetate powder (Daicel Chemical Industries, Ltd., trade name: Acetate Flake DS2.9 LT-55 (TAC)) were used as raw materials.
- Each powder was pressurized at 20 Mpa for 10 minutes using a tablet molding machine (manufactured by Jasco Corporation) and a hydraulic hand pump (manufactured by Riken Seiki Co., Ltd.) to obtain a plate-shaped molded product.
- the resulting plate-shaped molded product was ground with a coffee mill (MK-52M manufactured by Matsushita Electric Industrial Co., Ltd.).
- the ground product was classified through a sieve with an electromagnetic sieve shaker (AS200 control, manufactured by Retsch) to produce filtration rate control particles at mesh intervals of 300 to 710 ⁇ m.
- the resulting filtration rate control particles were used to produce filters containing cellulose triacetate particles and filters containing cellulose particles according to the same procedure as Example 1.
- the draw resistance and hardness of the produced filters were measured according to the same procedure as Example 1.
- Table 9A Filters containing cellulose triacetate particles Filter Nos. Specification of cellulose acetate fiber tow Addition amount of triacetin (% by weight) Draw resistance per length of 120 mm (mmH 2 O) Addition amount of particles per filter length of 10 mm (mg/10mm) Filter hardness (mm) A-7 5.0Y35000 6 311 35 0.54 A-8 5.0Y35000 3 307 35 0.70 A-9 5.0Y35000 0 314 35 1.2 A-10 3.5Y35000 6 327 29 0.75 A-11 3.5Y35000 3 332 29 1.0 A-12 3.5Y35000 1 322 29 1.3 [Table 9B] Table 9B: Filters containing cellulose particles Filter Nos.
- the hardness of the filters (A-7 to A-12) containing cellulose triacetate particles was from 0.54 to 1.3 (mm).
- the hardness of the filters (B-7 to B-12) containing cellulose particles was from 0.52 to 1.1 (mm).
- the hardness of the acetate plain filters (AF-1 and AF-2) not containing triacetin was 1.6 (mm). Therefore, it was found that the hardness of the filters is increased by the inclusion of the particles in the filters containing cellulose particles and the filters containing cellulose triacetate particles.
- the addition amount of the particles is increased, the hardness of the filters can be guaranteed even if the addition amount of triacetin is decreased. Specifically, it was found that when 3% by weight or less of triacetin was added or even when triacetin was not added, the sufficient hardness of the filter plugs was obtained.
- the produced cigarettes CA-7 to CA-12 and CB-7 to CB-11 were subjected to the smoking test according to the same procedure as Example 1.
- the smoking test was also performed on the cigarette rod (control cigarette) obtained by removing the filter of the commercially available filter-tipped cigarette "Seven Stars Solid Menthol".
- Example 1 The sample for analysis obtained in the smoking test was used to analyze tar, nicotine, and the semivolatile components according to the same procedure as Example 1.
- the permeability (%) and the selective filtration coefficient (%) were calculated according to the same numerical formulae described in Example 1.
- Table 11A Permeability and selective filtration coefficient of typical semivolatile components Filter CA-7 CA-8 CA-9 Permeability (%) 20 28 32 Selective permeation coefficient (%) 316 244 193
- Table 11B Permeability and selective filtration coefficient of typical semivolatile components Filter CA-10 CA-11 CA-12 Permeability (%) 27 30 35 Selective permeation coefficient (%) 252 220 192
- Table 11C Permeability and selective filtration coefficient of typical semivolatile components Filter CB-7 CB-8 CB-9 CB-10 CB-11 Permeability (%) Selective permeation coefficient (%) 26 285 31 221 44 159 28 256 42 162
- FIGS. 8A to 8C The permeability of the typical semivolatile components of the cigarettes CA-7 to CA-12 and CB-7 to CB-11 is shown in FIGS. 8A to 8C with respect to each total outer peripheral surface area of the cellulose acetate fiber.
- FIG. 8A shows the permeability of the typical semivolatile components of the filters containing cellulose triacetate particles in the case where the total outer peripheral surface area of the cellulose acetate fiber is 223 cm 2 (the specification of the fiber tow: 5.0Y35000).
- FIG. 8B shows the permeability of the typical semivolatile components of the filters containing cellulose triacetate particles in the case where the total outer peripheral surface area of the cellulose acetate fiber is 255 cm 2 (the specification of the fiber tow: 3.5Y35000).
- FIG. 8A shows the permeability of the typical semivolatile components of the filters containing cellulose triacetate particles in the case where the total outer peripheral surface area of the cellulose acetate fiber is 223 cm 2 (the specification of the fiber tow: 5.0Y35000).
- FIG. 8B shows the permeability of the typical semivolatile components of the filters containing cellulose triacetate particles in the case where the total outer peripheral surface area of the cellulose acetate fiber is 255 cm
- FIG. 8C shows the permeability of the typical semivolatile components of the filters containing cellulose particles in the case where the total outer peripheral surface area of the cellulose acetate fiber is 206 cm 2 (the specification of the fiber tow: 5.9Y35000 and 5.0Y35000).
- cellulose particles and the cellulose particles containing the additives described in Table 12 below were prepared.
- the cellulose particles were prepared by the same procedure as Example 6.
- the cellulose particles containing the additives were prepared by mixing the additives and cellulose powder according to the same procedure as Example 6.
- the additives were added in amounts described in Table 12.
- the "addition amount” is represented by a ratio (% by weight) of the additives to the total weight of the filtration rate control particles and the additives.
- the filtration rate control particles not containing the additives were also prepared for comparison. [Table 12]
- Table 12 Additive-added filtration rate control particles Filtration rate control particle Nos.
- the filtration rate control particles A-1 and B-1 to B-7 were used to produce filter plugs F-A-1 and F-B-1 to F-B-7.
- the filtration rate control particles were arranged in a paper tube having a length of 25 mm.
- Acetate filters (5 mm) were placed at the front side (the side of a tobacco rod) and the rear side (the side of a filter mouthpiece) of the filtration rate control particles so as to cover the filtration rate control particles.
- filters filled with the filtration rate control particles were produced.
- the addition amounts of the filtration rate control particles are shown in Table 13. As shown in FIG.
- the commercially available filter-tipped cigarettes "Seven Stars Solid Menthol" were used for the preparation of test cigarettes.
- the filter of the commercially available cigarettes was removed.
- the resultant cigarette rod was connected to each of the filters (F-A-1, F-B-1 to F-B-7, and F-C-1) to produce test cigarettes.
- the filter ventilation was set to 0.
- the cigarette prepared by using the filter F-C-1 is a control cigarette.
- Example 1 The produced cigarettes were subjected to the smoking test according to the same procedure as Example 1.
- the sample for analysis obtained in the smoking test was used to analyze tar, nicotine, and the semivolatile components according to the same procedure as Example 1.
- the permeability (%) and the selective filtration coefficient (%) were calculated according to the same numerical formulae described in Example 1.
- Table 14 Permeability and selective filtration coefficient of typical semivolatile components Filter F-A-1 F-B-1 F-B-2 F-B-3 F-B-4 F-B-5 F-B-6 F-B-7 Permeability (%) 68 67 73 72 74 69 68 72 Selective permeation coefficient (%) 98 105 98 100 101 100 98 99
- the permeability of the typical semivolatile components of the cigarettes obtained by using the filters F-A-1 and F-B-1 to F-B-7 is shown in FIG. 10 .
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JP2011267105 | 2011-12-06 | ||
PCT/JP2012/079108 WO2013084661A1 (fr) | 2011-12-06 | 2012-11-09 | Filtre à cigarette et cigarette |
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JP (1) | JP5786038B2 (fr) |
CN (1) | CN103987284B (fr) |
ES (1) | ES2707868T3 (fr) |
RU (1) | RU2604020C2 (fr) |
TW (1) | TW201325478A (fr) |
WO (1) | WO2013084661A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107438371A (zh) * | 2015-03-31 | 2017-12-05 | 韩国烟草人参公社 | 一种香烟的香料胶囊制备方法及制备装置 |
CN107683094A (zh) * | 2015-08-06 | 2018-02-09 | 韩国烟草人参公社 | 香烟的香味胶囊制造方法及制造装置 |
US10834961B2 (en) | 2013-07-16 | 2020-11-17 | Philip Morris Products S.A. | Radially firm smoking article filter |
EP3818843A4 (fr) * | 2018-08-10 | 2021-12-08 | KT&G Corporation | Cigarette |
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JP2017099287A (ja) * | 2014-04-02 | 2017-06-08 | 日本たばこ産業株式会社 | 喫煙物品用フィルター |
CN104705785B (zh) * | 2015-01-23 | 2019-01-01 | 南通醋酸纤维有限公司 | 一种醋酸纤维素微粒聚集体及其制备方法与应用 |
EA036041B1 (ru) * | 2015-08-28 | 2020-09-17 | Джт Интернэшнл С.А. | Курительное изделие |
CN106418688B (zh) * | 2016-09-14 | 2019-04-09 | 云南巴菰生物科技有限公司 | 一种释香凝胶纤维滤棒的制备方法 |
KR20190139315A (ko) | 2017-06-19 | 2019-12-17 | 니뽄 다바코 산교 가부시키가이샤 | 흡연 물품용 필터 및 그 제조 방법 |
CN107744176A (zh) * | 2017-09-19 | 2018-03-02 | 河南中烟工业有限责任公司 | 一种细支滤棒中香线用柠檬香精及其应用 |
CN107616545A (zh) * | 2017-09-19 | 2018-01-23 | 河南中烟工业有限责任公司 | 一种细支滤棒中香线用桂皮香精及其应用 |
WO2020153491A1 (fr) | 2019-01-25 | 2020-07-30 | 日本たばこ産業株式会社 | Filtre pour article à fumer |
CN113329645A (zh) | 2019-01-25 | 2021-08-31 | 日本烟草产业株式会社 | 吸烟物品用滤嘴 |
Family Cites Families (15)
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JPS5955180A (ja) * | 1982-09-22 | 1984-03-30 | 旭化成株式会社 | フエノ−ル性成分を分離する方法 |
WO1987002869A1 (fr) * | 1985-11-12 | 1987-05-21 | Kabushiki Kaisya Advance | Adsorbant pour une substance mutagene contenue dans la fumee du tabac et son utilisation |
JPS6374477A (ja) * | 1986-09-18 | 1988-04-04 | 株式会社アドバンス | たばこ用フイルタ材 |
TW241198B (en) * | 1993-09-06 | 1995-02-21 | Daicel Chem | A tobacco filter material and a method of producing the same |
TWI324049B (en) * | 2002-01-08 | 2010-05-01 | Japan Tobacco Inc | Smoking filter and smoking article |
HUP0201257A2 (hu) * | 2002-04-17 | 2004-05-28 | Péter Rozim | Szűrőbetét füstszűrős cigarettához |
EP1501872A1 (fr) * | 2002-05-08 | 2005-02-02 | Eastman Chemical Company | Triacetate de cellulose a faible viscosite de solution et applications associees |
JP4871116B2 (ja) * | 2006-12-25 | 2012-02-08 | レンゴー株式会社 | 薬剤担持用セルロース粒子 |
EP1972213A1 (fr) * | 2007-03-21 | 2008-09-24 | Philip Morris Products S.A. | Filtre multi-composant fournissant une amélioration de la saveur |
CN101896082B (zh) * | 2007-12-14 | 2013-10-02 | 日本烟草产业株式会社 | 香烟过滤嘴及带有过滤嘴的香烟 |
JP5138765B2 (ja) * | 2008-03-18 | 2013-02-06 | 日本たばこ産業株式会社 | シガレット主流煙成分吸着剤およびシガレット用フィルタ |
WO2009157240A1 (fr) * | 2008-06-25 | 2009-12-30 | 日本たばこ産業株式会社 | Article à fumer |
TW201032739A (en) * | 2009-01-08 | 2010-09-16 | Japan Tobacco Inc | Filter for cigarette |
JP5635782B2 (ja) * | 2010-03-04 | 2014-12-03 | 株式会社ダイセル | キトサンを担持させた粒状組成物とそれを含有するたばこフィルタ |
JP5766934B2 (ja) * | 2010-11-01 | 2015-08-19 | 株式会社ダイセル | タバコフィルター及びその製造方法並びにタバコ |
-
2012
- 2012-11-09 RU RU2014127494/12A patent/RU2604020C2/ru active
- 2012-11-09 JP JP2013548156A patent/JP5786038B2/ja active Active
- 2012-11-09 EP EP12856496.0A patent/EP2789249B8/fr active Active
- 2012-11-09 ES ES12856496T patent/ES2707868T3/es active Active
- 2012-11-09 WO PCT/JP2012/079108 patent/WO2013084661A1/fr unknown
- 2012-11-09 CN CN201280060253.7A patent/CN103987284B/zh not_active Expired - Fee Related
- 2012-11-13 TW TW101142159A patent/TW201325478A/zh unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US10834961B2 (en) | 2013-07-16 | 2020-11-17 | Philip Morris Products S.A. | Radially firm smoking article filter |
CN107438371A (zh) * | 2015-03-31 | 2017-12-05 | 韩国烟草人参公社 | 一种香烟的香料胶囊制备方法及制备装置 |
CN107683094A (zh) * | 2015-08-06 | 2018-02-09 | 韩国烟草人参公社 | 香烟的香味胶囊制造方法及制造装置 |
US10874135B2 (en) | 2015-08-06 | 2020-12-29 | Kt & G Corporation | Method and apparatus for manufacturing flavor capsule of tobacco |
EP3818843A4 (fr) * | 2018-08-10 | 2021-12-08 | KT&G Corporation | Cigarette |
Also Published As
Publication number | Publication date |
---|---|
CN103987284A (zh) | 2014-08-13 |
EP2789249A4 (fr) | 2015-08-19 |
JPWO2013084661A1 (ja) | 2015-04-27 |
EP2789249B1 (fr) | 2018-11-07 |
ES2707868T3 (es) | 2019-04-05 |
EP2789249B8 (fr) | 2018-12-26 |
WO2013084661A1 (fr) | 2013-06-13 |
JP5786038B2 (ja) | 2015-09-30 |
RU2604020C2 (ru) | 2016-12-10 |
TW201325478A (zh) | 2013-07-01 |
CN103987284B (zh) | 2019-01-11 |
RU2014127494A (ru) | 2016-01-27 |
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