RU24912U1 - FILTER FOR CIGARETTES - Google Patents

Abstract

1. A filter for cigarettes based on fiber material, characterized in that it contains at least two layers, one of which has catalytically active centers for the conversion of CO to CO, and the other has an anti-aerosol effect when the ratio of the thickness of the first layer to the thickness of the second layer equal to (2.4-2.6): 1, respectively. 2. The filter according to claim 1, characterized in that it further comprises an external hygienic layer. The filter according to claim 1 or 2, characterized in that it further comprises a layer with aromatic and / or therapeutic additives. The filter according to any one of claims 1 to 3, characterized in that the layer with aromatic and / or therapeutic additives is made in the form of a modular insert designed for installation in a cigarette before use.

Description

Cigarette filter

The present utility model relates to filter cigarettes.

In the manufacture of tobacco products, it is necessary to limit as much as possible the amount of undesirable substances entering the consumer’s body. Using a filter, cigarette manufacturers reduce the concentration of unwanted substances in the inhaled stream of smoke from the smoked item.

There are many designs of cigarette filters and materials for them. The most widely used fibrous filtering materials based on cellulose in various forms, most often cellulose acetate fibers. The main purpose of the fibrous filter materials is to remove part of the resins present as an aerosol in inhaled smoke. Cigarette filters may also contain various additives to capture the gaseous components of the smoke. A smoking article of the type of a cigarette is known, consisting of a tobacco rod and a filter containing fibers of an organic and inorganic substance, in which the filter contains super-thin basalt fiber with a diameter of not more than 0.6 μm in an amount of 1-1.5 mg as an inorganic substance ( description to patent RU, No. 1010840, 1994). However, the adsorption capacity of the known filter for gaseous components is low.

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A known filter for cigarettes, consisting of individual parts made of fibers of an organic polymer, and an adsorbent agent placed between these substances, the adsorbent agent being a lignin impregnated with organosilicon monomer N, M-bis (3-triethoxysilylpropyl-hyocarbamide)

(C2H5ObSi (CH2bNH-C (S) - -NH (CH2bSi (OC2H5) 3 (description of patent RU No. 20150546, 1994)). The adsorbent used in the filter also does not completely block harmful gaseous components present in the smoke.

Filters containing carbon components as adsorbent should be recognized as more effective. For example, a tobacco filter is known, consisting of at least two sections sequentially located along the passage of the stream of tobacco smoke: the outer one located on the side of the smoker and the middle one located on the side of tobacco, which together form a body formed by a packaging means, this is the outer section of vsholiene from cellulose-containing sludge of acetate fiber, and the middle section is filled with an adsorbing agent of organic fibers containing carbon in an amount of not less than 98% and having porosity a structure with a specific surface area of 700 to 1,500 (published application RU No. 94024343.1996).

The inclusion of activated carbon in cigarette filters allows you to capture both gaseous substances and resins to varying degrees. Activated carbon alone is difficult to use as a filter material and must be combined with some other materials, preferably fibrous materials. Closest to the proposed filter for cigarettes, which includes a component containing activated carbon, and at least one more component that contains fibrous filtering material based on cellulose, and the filter mounted on the cigarette has a ventilation level of at least 50%, and a cigarette with this liter emits no more than 5 mg of tar according to the standard smoke analysis method. Preferably, the filter comprises a front component including cellulose-based fibrous filter material mixed with activated carbon, and a rear component located closer to the end of the cigarette that is taken into the mouth containing only the fibrous filter material. In other embodiments, the filter contains three layers, the front layer containing only fibrous filter material, the intermediate layer containing only activated carbon, and the rear layer containing only fibrous filter material, or the filter containing three layers, with the front layer containing only fibrous filter material

the material is mixed with activated carbon, and the last (back) layer contains only fibrous filter material (description to patent RU No. 2111809, 1998).

However, well-known technical solutions do not specify the amount of each of the components used to achieve maximum filter efficiency.

The objective of this utility model is to create an effective filter with a minimum release of tar and gaseous components when smoking cigarettes, as well as providing the possibility of creating a therapeutic and prophylactic means for inhalation on the basis of a cigarette.

The problem is solved in the described utility model by using a filter based on a multilayer fibrous material, while the filter contains at least two layers, one of which has catalytically active centers of CO to CO2 conversion, and the other has an anti-aerosol effect, with respect to the thickness of the first layer to the thickness of the second layer (2.4-2.6): 1, respectively.

Additionally, the filter may contain an external, for example, hygienic, layer with aromatic additives.

In this case, it is advisable to fill the said layer with aromatic additives in the form of a replaceable modular insert, which increases the consumer qualities of the cigarette, and the use of a modular insert with

therapeutic and prophylactic properties allows you to turn a cigarette into a kind of inhaler.

An information search conducted by the applicant showed that a cigarette with a filter consisting of at least two layers with the mentioned properties and geometric parameters, as well as with an aromatic layer in the form of a replaceable modular insert with therapeutic and prophylactic properties, is unknown, which allows the conclusion that the totality of the features of the claimed technical solution meets the eligibility criterion of "novelty, and the possibility of qualifying the latter as a" utility model.

The mechanism of action of the filter is as follows: aerosol particles adsorb on the surface of the fibrous anti-aerosol filter material, and their components are then adsorbed by the fibrous material itself, and the function of the material with the catalyst centers consists mainly in the adsorption of gaseous components present in smoke. The claimed ratio of the layers is optimal and provides the release of resins below 5 mg per cigarette and a complete conversion of CO to COj.

In FIG. 1 shows a longitudinal section through a cigarette filter;

figure 2-replaceable insert with aromatic and / or therapeutic additives.

1 - a portion of tobacco cigarettes;

2 - fibrous aerosol filter material;

3-material with catalytic centers for the conversion of CO to COa;

4-change insert from a layer with aromatic and / or medicinal additives.

As mentioned, tobacco smoke, purified to the maximum extent by filter material 2, material 3 with catalytic conversion centers, enters the last (in this example) replaceable insert 4, which can be saturated with aromatic and / or medicinal substances. When smoking, heated smoke promotes the extraction of the aforementioned substances from the material of the insert and carries them into the body of the smoker. It should be noted that when inserting an insert in the form of a replaceable module, sets of such inserts with the desired aroma and / or necessary therapeutic properties can be offered to consumers separately and installed in a cigarette immediately before use.

Thus, the implementation of the cigarette in accordance with this utility model provides a significant reduction in the concentration of harmful components in tobacco smoke, and also improves the consumer qualities of the cigarette as a whole.

Claims (4)

1. A filter for cigarettes based on fibrous material, characterized in that it contains at least two layers, one of which has catalytically active centers for the conversion of CO to CO ₂ , and the other has an anti-aerosol effect when the ratio of the thickness of the first layer to the thickness of the second layer equal to (2.4-2.6): 1, respectively.  2. The filter according to claim 1, characterized in that it further comprises an external hygienic layer.  3. The filter according to claim 1 or 2, characterized in that it further comprises a layer with aromatic and / or therapeutic additives. 4. The filter according to any one of claims 1 to 3, characterized in that the layer with aromatic and / or therapeutic additives is made in the form of a modular insert designed for installation in a cigarette before use.