JP4866095B2 - Production method of flame-retardant tobacco - Google Patents

Description

  The present invention relates to a method for producing a tobacco cut that exhibits a light taste by being flame retardant.

  In recent years, there is an increasing tendency to prefer cigarettes that exhibit a light (mild) taste. Cigarettes with a light taste are mainly produced using expanded tobacco cuts.

  For example, in Patent Document 1, a tobacco material is immersed in liquid carbon dioxide to impregnate the tobacco material with liquid carbon dioxide, the impregnated liquid carbon dioxide is converted into solid carbon dioxide, and then solid carbon dioxide is converted at a high temperature. A method of evaporating to expand tobacco tissue is disclosed. Patent Document 2 discloses a method of expanding tobacco material by impregnating tobacco material in gaseous form with carbon dioxide and then rapidly heating it.

However, a puffed tobacco using such a method is costly and soft, so it is inferior in robustness and may cause trouble when it is wound up on a cigarette.
Japanese Patent Publication No. 56-50830 Japanese Patent Publication No.56-50952

  Accordingly, an object of the present invention is to provide a method for producing a flame-retardant cigarette having sufficient fastness while exhibiting a light taste.

  The inventors focused on the fact that the taste is alleviated by making the tobacco incombustible while intensively studying the tobacco inscription that exhibits a light taste. If it is flame retardant, the amount of combustion is reduced and the result is light. As a result of further research, we have found that by increasing the density of ordinary cigarettes or increasing the thickness of the cigarettes, flame retardancy can be achieved and at the same time sufficient cigarettes can be obtained. The present invention is based on such knowledge.

According to the present invention, there is provided a method for producing a flame-retardant tobacco cut, characterized in that the raw tobacco cut is subjected to a twisting process by a tea making machine and then subjected to a re-drying process, a koji process or a water-drying process. The

  According to the present invention, it is possible to produce a tobacco cut that has a light taste due to its flame retardancy and is excellent in fastness.

  In the present invention, a technique used in tea making is used to increase the density of the tobacco cut or to increase the thickness. That is, the raw tobacco cut is subjected to a twisting process and then subjected to a re-drying process, a koji process or a water drying process.

In accordance with the conventional method, the raw tobacco is adjusted to 18% by weight (humidity standard) by laminating tobacco (conditioning), stored, and adjusted to 18-20% by weight (humidity standard) with water vapor. It is obtained by slicing after wetting. The raw tobacco cut thus obtained has a thickness of about 0.1 to 0.2 mm and a width of 0.8 mm to 1 mm. Moreover, the raw material tobacco cut usually has a density of 0.40 to 1.0 g / cm ³ .

  In the present invention, a cigarette carved (raw material cigarette carved) having a thickness of about 0.2 mm obtained by cutting as described above and a width of 0.8 mm to 1 mm is subjected to a predetermined treatment. It is preferable to humidify the raw tobacco with steam. This humidification is preferably performed so that the moisture of the raw tobacco is 22 to 26% by weight (humid basis).

  Next, the humidified raw material tobacco is subjected to a twisting process. The twisting process is well known in the field of tea making and is performed using a twisting machine. The scissor is basically provided with a scissors, a scissor bowl provided so as to be rotatable on the scissors, and a scissors, and applies a scissors pressure to the scissors. Such a twisting machine includes, for example, JP-A-11-346655, JP-A-2001-29013, JP-A-2001-45972, JP-A-2001-231449, and JP-A-2002-119208. In the patent literature, and is also commercially available. In the present invention, this tea making machine can be used as it is. That is, the humidified raw material tobacco cut is put into a pot body, received by a chopping board, and a heel pressure board is installed to apply a heel pressure. In the twisting process, as in the twisting process in tea making, the raw tobacco cut is not heated.

  Next, the raw tobacco cut subjected to the twisting process is subjected to a re-drying process, a refinement process, or a water-drying process.

The re-drying process or the koji process is a well-known technique in the field of tea making and is performed using a re-drying machine or a koji machine. The redrying machine is a kind of rotary drier using hot air, and the precision milling machine dries the twisted raw tobacco cut into a straight shape while drying it. Although the thickness of the raw tobacco cut does not change significantly due to the re-drying process or the milling process, the density of the tobacco cut increases. Tobacco chops obtained by re-drying or milling can increase in density to 0.9-1.5 g / cm ³ . The re-drying process or the koji process can be performed at a temperature of 60 to 100 ° C. The processing time is about 20 to 60 minutes.

  The water-drying process is a kind of rotary drier, in which twisted raw tobacco pieces are entangled with each other and shaped into a spherical shape. Although the density of the raw tobacco cut does not change significantly by the water drying process, the thickness of the tobacco cut increases. The tobacco cut obtained by the water-drying process can increase in thickness from 0.5 mm to 8 mm. Here, the thickness of the tobacco cut is the length between the uncut surfaces of each sample. The water drying treatment can be performed at a temperature of 100 to 250 ° C. The processing time is about 20 to 60 minutes.

  As described above, it is preferable to humidify the raw material tobacco before twisting the raw tobacco according to the present invention. However, when the re-drying process or the sperm treatment is performed after the twisting process, the raw tobacco is humidified. After that, it is preferable to add glycerin. By adding glycerin, the re-drying process or the koji process is performed more smoothly, and the density is increased. It is preferable to add glycerin at a ratio of 0.1 to 20.0% by weight (wet basis) so as to be included in the raw tobacco. Moreover, when performing a water-drying process after a twisting process, after humidifying raw material tobacco, it is preferable to add water while adding glycerol. By adding glycerin and water, the water-drying process is performed more smoothly, and the thickness is increased by spherical shaping. Glycerin and the additional water are preferably added so as to be included in the raw tobacco cut at a ratio of 0.1 to 20% by weight (wet basis) and 0.1 to 20% by weight (wet basis), respectively.

  Since the tobacco cut obtained by the method of the present invention has an increased density or increased thickness, the surface area per volume of tobacco cut is reduced, thereby reducing the amount of tobacco burned when smoking cigarettes. In other words, it is more flame retardant than the original raw tobacco. Since it is flame retardant, the taste is lightened and the amount of CO generated is also reduced. In addition, since the density or thickness of the tobacco cut obtained according to the present invention is increased, the cigarette can be wound up without any trouble.

  EXAMPLES Next, although an Example demonstrates this invention, this invention is not limited to these Examples.

  In addition, the twisting machine, the scouring machine, the re-drying machine, and the water drying machine used in the following examples are manufactured by Terada Manufacturing Co., Ltd., and the twisting machine is a model EJ-200 type. Was model EH-2000, the re-dryer was model EC-2000, and the water dryer was model IR-10 equivalent. Further, the density of tobacco cuts was measured by averaging three points for each sample using a mercury method apparent density measuring device. The thickness of the tobacco cut was measured by averaging 10 points for each sample using a micrometer.

Example 1
After storing 500 g of raw material tobacco cut (thickness: 0.14 mm, density: 0.8 g / cm ³ ) in a thermo-hygrostat until the water content becomes 23% by weight (humid basis), 10% by weight of glycerin ( After being added so as to satisfy the wet standard), it was put into a twisting machine and subjected to twisting for 50 minutes. This twisted raw material tobacco cut was put into a re-dryer set at a temperature of 65 ° C. and re-dried for 25 minutes to obtain a desired tobacco cut (processed tobacco cut A).

Example 2
Water and glycerin were added to the raw tobacco cut used in Example 1 so that each would be 10% by weight (humid basis), and then placed in a twisting machine and twisted for 50 minutes. This twisted raw material tobacco cut was water-dried for 20 minutes with a water dryer set at a temperature of 150 ° C. to obtain a desired tobacco cut (processed tobacco cut B).

Example 3
Instead of the re-drying process, the method of Example 1 was repeated except that a 30 minute scouring process was performed with a scouring machine set to 90 ° C. to obtain a desired tobacco cut (processed tobacco cut C).

Tables 1 and 2 show the densities and thicknesses of the treated tobacco cuts and the untreated raw tobacco cuts (control tobacco cuts) obtained in Examples 1 to 3, respectively. Table 1 shows the value obtained by dividing the density of the treated tobacco by the density of the control tobacco as a density change, and Table 2 shows the value obtained by dividing the thickness of the treated tobacco by the thickness of the control tobacco. Is shown as a change in thickness.

  As shown in Tables 1 and 2, the treated tobacco cuts A and C increased in density by approximately 20% over the control tobacco cut, but the thickness was almost unchanged. Although the thickness is not changed by the re-drying process after the twisting process, it is considered that the pores existing in the tobacco are filled and the density of the tobacco is increased. On the other hand, the treated tobacco cut B showed little increase in density over the control tobacco cut, but the thickness increased significantly. The water-drying treatment after the twisting process does not fill the tobacco pores, but the tobacco thicknesses are intertwined and shaped into a spherical shape, which is thought to increase the apparent thickness.

Example 4
A cigarette having a length of 59 mm and a winding circumference of 25 mm was prepared by using a small tobacco winding machine (manufactured by RIZLA UK) using the treated tobacco stamp and the control tobacco stamp obtained in Examples 1 and 2.

  Each cigarette was set in a smoker manufactured by Borgwald, and after ignition, when it was spontaneously combusted from the tip to 15 mm, it smoked (puffed) once with a smoking capacity of 35 mL. Mainstream smoke generated by the smoke absorption is collected in a gas pack made of Teflon (registered trademark), and a gas chromatograph MicroGC (M200H) manufactured by Agilent is used as a column with a molecular sieve column (Agilent MolSieve 5A 10M). Quantitative analysis was performed. This quantitative analysis was performed three times for each tobacco cut, and the average value was calculated. FIG. 1 shows the oxygen consumption per smoke of each cigarette. From this result, it can be seen that the cigarettes using the processed tobacco cut A and the processed tobacco cut B had a 20% and 50% reduction in oxygen consumption compared to the cigarette using the control tobacco cut, respectively.

The graph which shows the amount of oxygen consumed by one smoke absorption of a cigarette.

Claims (7)

A method for producing a flame-retardant tobacco cut, characterized in that the raw tobacco cut is subjected to a twisting process using a tea making machine and then subjected to a re-drying process, a koji process or a water-drying process.   The method for producing a flame-retardant tobacco stamp according to claim 1, wherein glycerin is added to the tobacco stamp before the twisting process.   3. The method for producing a flame-retardant tobacco cut according to claim 2, wherein after the twisting process, the raw tobacco cut is subjected to a re-drying process or a refinement treatment. The method for producing a flame-retardant tobacco stamp according to claim 3, wherein the flame-retardant tobacco stamp has a density of 0.9 to 1.5 g / cm ³ .   The method for producing a flame-retardant tobacco cut according to claim 1, wherein water and glycerin are added to the tobacco cut before the twisting process.   The method for producing a flame-retardant tobacco stamp according to claim 4, wherein after the twisting treatment, the raw tobacco cut is subjected to a water-drying treatment.   The method for producing a flame-retardant tobacco stamp according to claim 6, wherein the flame-retardant tobacco stamp has a thickness of 0.5 to 8 mm.

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