KR100636083B1 - Cigarette filter using bamboo activated carbon - Google Patents

Abstract

A cigarette filter containing bamboo activated carbon is provided to considerably improve adsorption of harmful materials compared to general charcoal or coconut shell activated carbon, to exhibit marked iodide adsorption and esthetical stability during smoking because of bamboo flavor by comprising bamboo activated carbon and cellulose acetate based fibrous material in filter material. The cigarette filter has at least one of filter material into which bamboo activated carbon(4) is filled. The bamboo activated carbon is prepared by the steps of: baking bamboo wood at 1000-1300deg.C; and carrying out any one selected from a group consisting of vapor treatment at 600-950deg.C, CO2 treatment and chemical treatment by using phosphoric acid and ZnCl2 or KOH. The bamboo activated carbon has specific surface area ranging from 600 to 3000 m^2/g. The bamboo activated carbon filled filter material is located between fibrous materials such as cellulose acetate fiber(2). Alternatively, the bamboo activated carbon is uniformly distributed in the fibrous material.

Description

Cigarette filter using bamboo activated carbon {CIGARETTE FILTER USING BAMBOO ACTIVATED CARBON}

1 shows an example of a cigarette filter according to the present invention.

Figure 2 shows an example of a cigarette filter according to the present invention.

Figure 3 shows an example of a cigarette filter according to the present invention.

Figure 4 illustrates a cigarette used in the embodiment of the present invention.

Description of reference numerals

1-kerosene 2- Cellulose acetate fiber

3-Cavity for the filter media 4-Bamboo activated carbon particles

5-perforation

The present invention relates to a tobacco filter that gives aesthetic stability because of the smell of bamboo during smoking, and remarkably excellent absorption of nicotine, tar and volatile harmful substances by bamboo activated carbon.

In general, tobacco consists of a herb and a cigarette filter, and the smoke sucked from the cigarette filter contains toxic substances such as nicotine and tar as well as volatile organic substances. It is manufactured by forming a fibrous layer or the like so as to make a double or triple filter structure and filling adsorbents such as charcoal including oak charcoal charcoal to reduce harmful components such as nicotine and tar during combustion. It is developing products that reduce the degree of inhalation. However, the conventional technique using charcoal achieves a sufficient filter effect because the charcoal specific surface area is 100 to 300 m2 / g, and even if the specific surface area is small or the specific surface area is large, the adsorption capacity of organic substances harmful to the human body is insufficient. Since the specific surface area is large and the flavor is more excellent, psychological stability can be given, and the development of a material having a very excellent ability to remove harmful substances even under the same specific surface area is further demanded.

Bamboo is a tree plant belonging to the rice family among the monocotyledonous plants and is native to the subtropical Asia region. There are 11 kinds of plants in Korea, such as Wangdae, Spongedae, Bamboo Soondae, Idae, and Zoridae. They are so strong that they spread rapidly through the underground, and no other plants can grow in the bamboo fields. It hasn't blossomed for decades, and once it blooms, all the trees in the bamboo field die at once. When bamboo shoots come up in the spring, they start up huge accumulated energy, grow up to 1m in height per day, grow in diameter within 4 weeks, and then harden the fields for 3-5 years.

Bamboo charcoal is more valuable than other charcoal because of its fast growing nature. Charcoal carbonizes at high temperatures, leaving only the fibrin in the cell walls, leaving many pores. Bamboo charcoal has larger pores due to its larger cell size and wider cell spacing. The inner surface area of the bamboo charcoal 1g is about 100 ~ 300㎡, which is characterized by excellent water retention, breathability, adsorption, and heat storage, but when applied to tobacco filters, the absorption efficiency of harmful substances such as nicotine and tar was not high. Therefore, it was necessary to study to increase the specific surface area to have a good adsorption capacity.

Therefore, the present inventors while studying the material excellent in the adsorption performance compared to the general charcoal in order to improve the above disadvantages, when using the activated carbon using bamboo, the aroma of the bamboo occurs while smoking and the specific surface area increases, harmful The present invention has been completed by recognizing that there is a remarkable effect of improving the adsorption performance of the material and the adsorption capacity of organic matter other than the effect of the specific surface area.

The object of the present invention is to provide a tobacco aesthetic that gives an aesthetic sense of stability, and improves the filtration performance of nicotine and tar and harmful organic substances during smoking. More specifically, an object of the present invention is to provide a tobacco filter having superior adsorption performance of harmful substances and remarkably excellent iodine adsorption performance, compared to a conventional tobacco filter using various activated carbons such as charcoal or coconut shell activated carbon.

It is another object of the present invention to provide a tobacco filter composed of a filter medium and a fiber layer using bamboo activated carbon, and an object of the present invention is to provide a cigarette filter that can be effectively filtered by varying the configuration of the filter medium and the fiber layer.

The present invention relates to a cigarette filter using bamboo activated carbon, which has a remarkably excellent effect of removing harmful components compared to conventionally developed oak charcoal or bamboo charcoal, and to a functional tobacco filter which can impart aesthetic stability due to bamboo aroma when smoking. will be.

More specifically, the present invention relates to a cigarette filter comprising bamboo activated carbon, wherein the tobacco filter comprising a fiber material and a filter material comprises at least one filter material filled with bamboo activated carbon. Filled filter medium is located between each of the fiber material and the fiber material, or the bamboo activated carbon is evenly distributed in the fiber material, such as various applications are possible.

In the present invention, the bamboo activated carbon is bamboo after baking at 800 ~ 1300 ℃, that is, carbonized by the high temperature treatment becomes a charcoal (Char), by adding steam of 1.5 to 3 times the weight ratio of bamboo charcoal at 600 ~ 950 ℃ temperature Activated bamboo charcoal, in addition to steam, it is also possible to use chemicals such as CO ₂ or phosphoric acid, ZnCl ₂ , KOH. Bamboo charcoal is produced in the roasting step at 800 ~ 1300 ℃, and the steam is activated at the temperature of 600 ~ 950 ℃ again to activate the carbon activated carbon to increase the specific surface area more than three times. When using the bamboo activated carbon, the present inventors have noticeably improved the adsorption capacity of harmful components compared to bamboo charcoal or other activated carbon having a similar specific surface area, and have a soft bamboo fragrance when smoking, giving a flavor as if inhaling bamboo sap. The present invention has been accomplished by knowing that it is possible to provide a new cigarette from which the mental security and the smell of tobacco are removed.

The specific surface area of the bamboo activated carbon used in the present invention is 600 to 3000 m 2 / g, and the specific surface area is larger than that of conventional charcoal, and also the apparent specific gravity per the same specific surface area is higher than that of other types of activated carbon other than bamboo. It is low and has better ability to remove nicotine, tar and organic harmful substances. In addition, when using the bamboo activated carbon according to the present invention, it has a significant iodine adsorption effect compared to using a general charcoal or coconut shell activated carbon has an excellent effect on the adsorption of harmful substances.

In the present invention, the bamboo activated carbon is preferably used by pulverizing into a fine powder, the size is not particularly limited and may be appropriately selected and used as needed, but the bamboo activated carbon is used as a filter medium between the fibers by producing a triple filter If it is used, it is preferable to use 16 × 35 mesh, and if it is less than that, it is not preferable because the suction resistance is high, and when using it as a double filter composed of a fiber material and a filter material, it is recommended to use a 30 × 80 mesh. It is good in terms of performance and efficiency, and more preferably 40 × 60 mesh.

1 to 3 show an example using a cigarette filter according to the present invention.

As shown in FIG. 1, the pulverized bamboo activated carbon particles may be mixed with a fiber material to be evenly distributed in a fiber material, and as shown in FIG. 2, between the fiber material and the fiber material. It is also possible to fill the bamboo activated carbon filter medium so as to be stacked, and as shown in Figure 3, it is also possible to fill the bamboo activated carbon filter medium in the upper part of each grass and to use the fibrous material in the upper part. In addition, it can be applied in various forms to the conventional tobacco filter structure.

At this time, it is preferable to use cellulose acetate, which is typically used in the manufacture of tobacco, but the fiber material is not limited thereto since it may be used by those skilled in the art if necessary.

Hereinafter, the present invention will be described with reference to Examples for the specific description of the present invention, but the present invention is not limited to the following Examples.

First, in order to measure the smoke smoke component of bamboo activated carbon, in particular the harmful smoke component known as Hoffmann component, the removal ability was measured and compared with the charcoal, bamboo charcoal, coconut shell activated carbon properties.

EXAMPLE

Bamboo activated carbon manufacturer

Bamboo was cut to 1cm x 2cm size, and then baked in a kiln for 5 hours at about 1000 ℃ to prepare a bamboo char (Char). The bamboo charcoal thus prepared was activated under a temperature of 850 ° C. for 3 hours while adding 1.5 times the amount of water vapor of the bamboo charcoal. The bamboo activated carbon thus prepared was pulverized using a grinder, and the particle size of 40 × 60 mesh was separated and used for the experiment.

Specific surface area (BET, N ₂ ), pupil distribution and pupil volume were analyzed using an ASAP2020 instrument from Micromertics, USA. The apparent specific gravity was measured by the KSM 1802 method and the results are shown in Table 1 below.

Tobacco smoke analysis and results

For the analysis of smoke component removal, the triple layer shown in FIG. 4 has a cavity in the middle layer, and both sides have a cigarette filter made of cellulose acetate fibers, and a product cigarette having a constant weight and suction resistance. Were screened. At this time, the filter was made of a circumference of 24.2mm, filter length of 24mm (cellulose acetate fiber portion 9mm + cavity 6mm + cellulose acetate fiber portion 9mm). The screening conditions (triple cavity cigarette) were 786 ± 10mg in weight and 89 ± 2mmH ₂ O in suction resistance.

The blanks in the middle layer of the product tobacco selected under these conditions were cut by 5 mm x 5 mm with a knife and weighed exactly 80 mg of bamboo activated carbon, respectively, and filled in the empty portions in the middle layer, and then bonded with Scotch tape.

For tobacco smoke analysis, it was used for experiments after adjusting for 48 hours at constant temperature and humidity (temperature 22 ± 2 ℃, relative humidity 60 ± 5%) set to CORESTA conditions.

To analyze the adsorption performance of organic substances, including tar and nicotine, as a total tobacco smoke material, 20 cigarette samples were burned using RM20 smoking device (Heinr Borgwaldt, Germany) according to ISO 3308, and then 92mm Cambridge filter The pad was collected and analyzed.

Nicotine analysis of smoked condensate was conducted by GC analysis according to ISO 10315.

Volatiles (organic matter) in mainstream tobacco smoke were measured according to the Arista test method (1999).

Iodine adsorption capacity was also analyzed and tested according to the KS M 1802 test method. Iodine adsorption capacity is an important factor for measuring the adsorption performance of harmful components of tobacco.

These smoke component removal ability analysis is shown in Table 2 below.

Comparative Example 1

The oak charcoal charcoal baked at 1000 ° C. for 5 hours was pulverized using a grinder, and a particle size of 40 × 60 mesh was separated. Specific surface area (BET, N ₂ ), pupil distribution and pupil volume were analyzed using an ASAP2020 instrument from Micromertics, USA, and the results are shown in Table 1 below.

In addition, except for using the oak charcoal instead of bamboo activated carbon in Example 1 for the tobacco smoke analysis was tested under the same conditions. These smoke component removal ability analysis is shown in Table 2 below.

Comparative Example 2

Bamboo charcoal baked for 5 hours at about 1000 ℃ was pulverized using a grinder, the particle size of 40 × 60 mesh was used to separate. Specific surface area (BET, N ₂ ), pupil distribution and pupil volume were analyzed using an ASAP2020 instrument from Micromertics, USA, and the results are shown in Table 1 below.

In addition, the experiment was conducted under the same conditions except for using bamboo charcoal instead of bamboo activated carbon in Example 1 for cigarette smoke analysis. These smoke component removal ability analysis is shown in Table 2 below.

Comparative Example 3

Coconut shell  Activated carbon

After baking for 5 hours at about 1000 ℃ was used coconut shell activated carbon activated for 3 hours by steam at 950 ℃ temperature. Thus prepared coconut shell activated carbon was pulverized using a grinder, and the particle size of 40 × 60 mesh was used separately. Specific surface area (BET, N ₂ ), pupil distribution and pupil volume were analyzed using an ASAP2020 instrument from Micromertics, USA. The apparent specific gravity was measured by the KS M 1802 method and the results are shown in Table 1 below.

In addition, the experiment was conducted under the same conditions except for using the coconut shell activated carbon instead of bamboo activated carbon in Example 1 for cigarette smoke analysis. These smoke component removal ability analysis is shown in Table 2 below.

TABLE 1

As shown in Table 1, it was found that bamboo activated carbon is about three times more developed than the specific surface area of true charcoal or bamboo charcoal. In addition, the bamboo activated carbon according to the present invention was found to have a larger pupil volume and a lower apparent density in spite of having a similar specific surface area than the coconut shell activated carbon prepared by the same method.

In Table 2, tar, nicotine, and organic matters were described based on 100 measured values of coconut shell activated carbon of Comparative Example 3.

TABLE 2

As can be seen in Table 2, when the bamboo activated carbon according to the present invention is used in the cigarette filter, it has excellent adsorptive power as compared to the use of charcoal, bamboo charcoal and coconut shell activated carbon, so that not only tar, nicotine but also organic matters are transferred. A small amount was found. In addition, the amount of iodine (I ₂ ) adsorption was also found to have more than three times the adsorption capacity compared to charcoal and bamboo charcoal.

In addition, as a result of comparing the palm activated charcoal of Comparative Example 3 with a similar specific surface area, and compared to Comparative Example 3, the example using bamboo activated carbon tar (Tar) ) 8.2% for Nicotine, 7.9% for Nicotine, 47.5% for HCN, 58.8% for Acrylonitrile, 51.6% for Isoprene, 52.3% for Benzene, 53.3% for Toluene, 36% for 1,3-Butadiene, 45.45% for Pyridine, 42.51% for Acrolein, Propionaldehyde Adsorption capacity for organic matters increased by more than 30%, including 36.7% for Crotonaldehyde, 61.5% for Crotonaldehyde, and 62.8% for Methyl ethyl ketone (MEK). Compared to 3, the effect was increased by 2.33%. Accordingly, it was found that the use of bamboo activated carbon compared to coconut shell activated carbon reduced the amount of harmful smoke components by more than 30% despite having a smaller specific surface area.

That is, when the bamboo activated carbon according to the present invention is applied to a tobacco filter, it was found that the adsorption performance of toxic components and the adsorption of iodine components remarkably superior to general charcoal or other types of activated carbon.

In addition, as a result of smoking by using a tobacco filter using bamboo activated carbon according to the present invention for 20 smokers, when smoking a cigarette with a cigarette filter using coconut shell activated carbon, although it feels dry, bamboo activated carbon In the case of using tobacco, it was found that the bamboo fragrance, such as bamboo vinegar, has a thick, soft feeling and aesthetic stability.

As described above, the tobacco filter according to the present invention is remarkably excellent in the adsorption power of harmful components, and the amount of iodine adsorption is remarkably superior to the conventional charcoal or coconut shell activated carbon used in the prior art. In addition, the smell of bamboo when smoking can give aesthetical stability.

Claims (7)

In the tobacco filter consisting of a fiber material and a filter material, Bamboo is baked at 1000 to 1300 ℃, and then activated at 600 to 950 ℃ by using steam treatment, CO ₂ treatment or any one treatment means selected from any one chemical treatment selected from phosphoric acid and ZnCl ₂ and KOH. Tobacco filter using bamboo activated carbon, characterized in that it comprises at least one filter medium filled with one bamboo activated carbon. delete The method of claim 1, The bamboo activated carbon tobacco filter using bamboo activated carbon, characterized in that the specific surface area of 600 ~ 3000 ㎡ / g. The method of claim 1, Cigarette filter using bamboo activated carbon, characterized in that the filter medium filled with the bamboo activated carbon is located between each of the fiber and the fiber. The method of claim 1, Tobacco filter using bamboo activated carbon, characterized in that it comprises at least one of the bamboo activated carbon evenly distributed in the fiber material. The method of claim 1, After filling the filter medium filled with the bamboo activated carbon on the top of the vinegar, the filter filter using bamboo activated carbon, characterized in that consisting of two layers by filling the fiber material on the filter medium. Tobacco having a tobacco filter according to any one of claims 1 or 3 to 6.

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