KR100617983B1 - Cigarette Filter - Google Patents

Abstract

The present invention relates to a cigarette filter used in the manufacture of cigarettes, and harmful substances generated during combustion by inserting ion exchange fibers containing specific functional groups vertically in the form of a row or a plurality of rows at the center thereof, that is, a carbonyl compound Physics designed to remove polar compounds by chemical adsorption filter unit designed to selectively remove TSNA, amines, ammonia, hydrogen cyanide and heavy metal components and physical adsorbents such as activated carbon fiber, activated carbon and zeolite In the manufacture of a multi-stage composite filter of the general filter unit consisting of an adsorption filter unit and an acetate tow filter which can remove general components such as tar and nicotine generated during cigarette combustion,

The cigarette filter according to the present invention has the same external structure as the existing cigarette filter, and thus it is possible to manufacture a cigarette in the same process and to control the type and amount of the ion exchange fibers to be inserted without affecting the taste of the cigarette during combustion. It selectively removes only harmful components.

Cigarette Filter, Ion Exchange Fiber, Activated Carbon Fiber, Vertical Insertion, Selective Removal

Description

Cigarette Filters {Cigarette Filter}             

1: Shape of the multiple filter for cigarette according to the present invention

<Description of the symbols for the main parts of the drawings>

A: chemisorption filter unit

B: physical adsorption filter

C: general filter unit

   a: Ion Exchange Fiber and Ion Exchange Fiber Chop

   b: acetate tow fiber

D: Chemical adsorption filter part and the contact surface of the vinegar (moisturizer or moisturizer addition part)

It is an object of the present invention to manufacture a cigarette filter that can be selectively removed with respect to certain harmful components generated during cigarette combustion.

It is known that about 5,000 kinds of smoke compounds are produced during cigarette burning. Among them, there are trace or trace amounts of components known to be harmful to the human body, including some components separated as carcinogenic substances. Much research is underway on elimination or suppression of outbreaks. Currently, studies on the removal and reduction of components related to smoking health and disease are largely performed by 1) adding an adsorbent to a cigarette filter to remove already generated harmful substances, or 2) treating a cigarette with a cigarette or the like. There is an attempt to suppress the generation of harmful substances through catalysis during burning, or to 3) suppress the amount of harmful substances generated during combustion by physically and chemically treating tobacco leaves. However, the method of adding the adsorbent to the cigarette filter is mainly used for the purpose of removal by their porosity using a physical adsorbent, so that there is almost no selective removal of volatile harmful substances.

Ion-exchange fiber has the advantage that it is easy to construct a filter, and it can be applied to all fluids because it can not only obtain a high level of removal ability of harmful components through the introduction of uniform functional groups but also expect a high removal rate at fast contact time. have. In addition, by introducing a functional group having a selective removal ability for a specific material to be removed has the advantage that the material can be selectively removed. The filter including the ion exchange fiber has been tried to use the ion exchange fiber filter as a whole filter, the ion exchange fiber and reinforcing polymer, or a mixture of adsorbents such as activated carbon or zeolite, As it was applied over the entire length of the filter, there was a disadvantage that the suction pressure was increased and the tobacco taste was softened, which did not fit the taste of traditional smokers.

Therefore, the present invention was to develop a single or multiple filters for cigarettes to selectively remove the harmful components generated during combustion by using the ion exchange fiber having a selective removal ability for a specific harmful substances.

In addition, the present invention faithfully reflects the taste of the traditional smokers and provides a sufficient adsorption area despite the minimum use of ion exchange resin during smoking to provide a new filter of a form that can sufficiently adsorb or remove various compounds generated during smoking To provide.

The present invention also shows that the adsorption by the conventional ion exchange resin is mostly adsorbed in the part close to the vinegar, and in the oral part away from the vinegar part, the adsorption capacity of the ion exchange resin is lowered. To increase the adsorption density so as to adsorb various compounds to provide a new filter for removing harmful compounds.

Accordingly, in order to achieve the above object, the present invention relates to a cigarette filter that selectively removes harmful components generated during cigarette combustion. The present invention relates to a single filter such as acid, basic, zwitter, and chelate in an acetate tow filter. Using ion-exchange fibers or blending two or more ion-exchange fibers in a vertical direction relative to the oral portion of the filter, or randomizing the ion-exchange fibers in the form of whiskers or chops inside the filter Chemistry adsorption filter unit configured in the form of a coating, a physical adsorption filter unit comprising a physical adsorbent containing one or more activated carbon, zeolite or activated carbon fibers in a vertical direction, and a general filter unit consisting of a conventional acetate tow filter To manufacture a cigarette multistage filter consisting of three stages arranged sequentially from the portion to the oral portion One will.

That is, in the present invention, the ion exchange fibers constituting the chemisorption filter unit are based on polyethylene, polypropylene, polystyrene, and polyacrylonitrile fibers for physicochemical stability, and functional groups include cations such as sulfonic acid, phosphoric acid, and acrylic acid, 1 Anionic, zwitter, and chelate functional groups such as, secondary, tertiary amine and ammonium were assumed. In addition, in the case of these ion exchange fibers constituting the chemisorption filter portion, up to 3 to 100% by weight, based on the oral portion, is present in a single row or two or more rows in a plurality of rows or in a whisker or chop form. The fibers consist of a filter in the form of randomly applied inside the acetate tow filter.

In addition, it is preferable to increase the ionization tendency of the smoke substance to be implemented during combustion by providing the moisture absorbent and the moisturizer in the cigarette filter so that they may contain water, so that the performance of the chemisorption filter portion may be expected to be improved. The humectant and the humectant may be selected from sorbitol, mannitol, sucrose, glycerin, etc., which is preferably added to the contact surface of the chemisorption filter unit and the vinegar, which is in front of each sec. Of the chemisorption filter segment of the present invention. It can be applied by a suitable method such as spraying or coating, and the amount of commonly used is about spraying one end of the chemisorption filter segment, and usually about 0.01 to 5% by weight of the total chemisorption filter is appropriate. . When too much, it blocks the passage of smoke generated during smoking to increase the suction pressure, which is inconvenient, and also weakens the external paper of the cigarette, and when it is low, it may not have sufficient and consistent adsorption of harmful substances. In this configuration, the adsorption efficiency of the chemisorption filter portion including the ion exchange resin is greatly changed depending on the moisture content, so that the smoke generated by the ion exchange resin can retain moisture. And a configuration in which a moisturizer is added to increase the adsorption capacity.

In the case of the physical adsorption agent constituting the physical adsorption filter unit, activated carbon fibers can be used in addition to the existing activated carbon, zeolite and the like. In the case of these activated carbon fibers, as described above, the activated carbon fibers are configured to exist in a row or two or more rows vertically based on the shoe. If the physical adsorbent used is in the form of a powder or chop, it may be inserted in a random form.

When the cigarette is combusted using such a cigarette filter, harmful components such as carbonyl compounds, TSNA, amines, ammonia, hydrogen cyanide and heavy metals in the smoke flowing through the filter are primarily removed from the chemisorption filter unit, and aromatic Substances such as polynuclear aromatic ring compounds can be secondaryly removed through the physisorption filter unit, and substances such as tar and nicotine can be removed from the general filter unit.

In the case of using a filter having a structure according to the present invention, that is, a fiber bundle prepared by mixing the same amount of polystyrene and polypropylene was impregnated with 100 parts by weight of nitrobenzene including 20 parts by weight of sulfuric acid and 0.2 parts by weight of formaldehyde for 6 hours. After washing with water and methanol and drying, impregnated with sulfuric acid solution at 80 ° C. for 3 hours to sulfonate, and then washed with water and dried to prepare 40% by weight of sulfonated polystyrene fiber along with acetate fiber in the longitudinal direction. The chemical fiber filter prepared by the above method is disposed in a length of 1/3 of the total filter length, and sorbitol is introduced by spraying sorbitol with the humectant between the chemisorption filter and each herb, and another one of the total filter length on the opposite side to which the humectant is introduced. / 3 to form a physical adsorption filter portion in which zeolite and activated carbon are dispersed in the same amount, wherein the zeolite and activated carbon 4 weight% of the total physical adsorption filter is added and dispersed. Subsequently, an acetate tow filter, which is a conventional filter, was sequentially disposed on the opposite side of the physical adsorption filter in contact with the chemical adsorption filter, to prepare a filter of the present invention. As a result, the chromatographic analysis showed that the overall filter length was improved by more than 68% compared to the filter composed of the physical adsorption filter. In the present invention, it is best to apply an absorbent or a humectant between each herb and the chemisorption filter, and to arrange the chemisorption filter, the physical adsorption filter, and the general filter segment sequentially. Regardless of the order of the arrangement, since it has an improved effect of removing harmful compounds compared to the general filter, the present invention can manufacture various types of filters having the above configuration.

The cigarette filter manufactured according to the present invention may be equally applicable to a process for manufacturing a cigarette using a conventional cigarette filter. In addition, it has the advantage of removing certain harmful substances without affecting the amount of tar and nicotine to be implemented in cigarettes, and selectively removes only certain substances according to the type of ion exchange fibers in the chemisorption filter unit to be added. It can be used in other fluids in addition to cigarette filters. In addition, it can be seen that by using the filter adopting the configuration according to the present invention can also remove the harmful substances.

Claims (6)

A chemisorption filter segment in which ion-exchange fibers are inserted vertically in the form of a row or a plurality of rows at the center of the filter, in the form of fibers, or randomly inserted into the filter in the form of whiskers or chops, Cigarette filter comprising a general filter segment consisting of a zeolite, activated carbon or activated carbon fibers and a physical adsorption filter segment and an acetate filter. The method of claim 1, The ion exchange fibers are based on polyethylene, polypropylene, polystyrene and polyacrylonitrile fibers, and the functional groups are cationic functional groups selected from sulfonic acid, phosphoric acid and acrylic acid, primary amine, secondary amine, tertiary amine and ammonium. A cigarette filter having any one or more functional groups selected from anionic functional groups, zwitter functional groups, and chelate functional groups selected from among others. The method of claim 1, The amount of the ion exchange fibers used in the chemisorption filter unit is a cigarette filter, characterized in that used to adjust to 3 to 100% by weight.        The method according to any one of claims 1 to 3, The cigarette filter further comprises a contact surface to which a moisture absorbent or a moisturizer is added. The method of claim 4, wherein A cigarette filter comprising a contact surface to which a moisturizer or an absorbent is added is formed between each corner and the chemisorption filter segment, and the physisorption filter segment and the general filter segment formed adjacent to the other side of the chemisorption filter are sequentially formed. . The method of claim 4, wherein The hygroscopic and moisturizing agent is a cigarette filter, characterized in that using any one or more components selected from sorbitol, mannitol, sucrose or glycerin.

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