RU2831256C2 - Smoking article filter and smoking article comprising such filter - Google Patents

Abstract

FIELD: smoking accessories.

SUBSTANCE: group of inventions relates to filters for smoking articles. Device comprises two or more parts with filter. At least one of two or more parts with filter contains from two to four holes. Shortest distance from the outer wall of the filter of the smoking article to the hole is greater than or equal to 0.7 mm and less than or equal to 1.3 mm.

EFFECT: optimum resistance to draw is provided, coefficient of smoke components removal is increased, transfer of cigarette smell to hands during smoking is prevented, reduced number of stains formed in the cross section of the filter during smoking, which allows the cross section of the filter to remain clean after smoking.

11 cl, 4 dwg, 6 tbl, 5 ex

Description

Field of technology

[1] The present invention relates to a filter for a smoking article and to a smoking article containing such a filter.

Prior art

[2] Essentially, tobacco is understood as a perennial plant belonging to the nightshade dicotyledonous plants, and more recently - a product produced for the purpose of smoking, in which tobacco leaves are wrapped in cigarette paper, and a filter part is formed on one side. There are thousands of types of cigarettes in the world, produced in various shapes and sizes. So, as the closest analogue, the object from the source KR 10-2020-0057063 can be considered.

[3] The filter is located at the mouth end of the cigarette and is designed to filter smoke components by removing particles and vapor phase of cigarette smoke.

[4] However, since the filter wrapping paper surrounding the filter is made of paper, there are problems that cigarette smoke passes through the filter during smoking, causing the cigarette smell to penetrate into the area that the smoker's fingers directly touch and causing a stain to form in the cross-section of the filter during smoking.

Detailed description of the invention

Technical goals

[5] Accordingly, in order to overcome such problem and/or limitations of the known technology, in one aspect of the present invention, a filter of a smoking article is provided, comprising two or more filter parts, in which at least one of the two or more filter parts comprises from two to four holes, and a smoking article with such a filter.

[6]

[7] However, the objectives achieved by the present description are not limited to the above-mentioned objective; other objectives not mentioned herein may be apparent to those skilled in the art to which the present invention pertains from the following description.

Technical solutions

[8] In one embodiment of the present invention, a filter for a smoking article is provided, comprising two or more filter parts, in which at least one of the two or more filter parts comprises from two to four openings.

[9] In one aspect, a smoking article is provided that includes a smoking article filter.

Effects

[10] The present invention makes it possible to provide a drag resistance that exceeds that of a conventional tubular filter known in the prior art and to increase the smoke component removal rate. In addition, the main smoke flow and air entering through the perforation area with multiple holes make it possible to prevent the transfer of cigarette odor to hands during smoking. In addition, reducing the number of stains formed in the cross-section of the filter during smoking makes it possible for the cross-section of the filter to remain clean even after smoking and ensure the satisfaction of the smoker.

[11]

[12] It should be understood that the effects of the present invention are not limited to the above-described effects and include all effects that can be obtained from the configurations and features described in the following description or claims of the present invention.

Brief description of the drawings

[13] FIG. 1 shows a smoking article 100 according to one embodiment of the invention.

[14] FIG. 2 shows schematically and in cross-section a filter 10 of a smoking article comprising two parts with a filter, wherein one of the two parts with a filter has three openings.

[15] FIG. 3 shows a cross-section of part 11 with a filter containing three holes.

[16] FIG. 4 shows a manufactured filter 10 of a smoking article.

The best embodiment of the invention

[17] Embodiments of the invention are described in detail below with reference to the accompanying drawings. However, various changes and modifications can be made to the embodiments of the invention. In this case, the embodiments of the invention are not limited to the description of the present invention. It should be considered that the embodiments of the invention include any changes, equivalents and replacements within the spirit and technical scope of the description.

[18] The terminology used herein is for the purpose of describing particular embodiments only and is not limiting. The singular form includes both singular and plural nouns, except where the context clearly dictates otherwise. Furthermore, it should be understood that the terms "comprises/comprising" and/or "includes/including", when used in this specification, specify the presence of the stated functions, integers, steps, operations, elements and/or components, but do not exclude the presence or addition of one or more other functions, integers, steps, operations, elements, components and/or groups thereof.

[19] Unless otherwise defined, all terms, including technical and scientific terms, used herein have the meaning commonly understood by those skilled in the art to which embodiments of the invention pertain. Furthermore, it should be understood that terms, such as those defined in commonly used dictionaries, are to be interpreted as having a meaning consistent with their meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in the text.

[20] Furthermore, when describing embodiments of the invention with reference to the accompanying drawings, like reference signs refer to like components, and any repeated description relating thereto will be omitted. In the description of embodiments of the invention, a detailed description of known related structures or functions will be omitted if such a description may lead to an ambiguous interpretation of the present description of the invention.

[21] Furthermore, terms such as first, second, A, B, (a), (b), and the like may be used in describing components according to embodiments of the present invention. These terms are used only to distinguish the components, and the nature, sequence, or order of the components are not limited by these terms.

[22] A component whose function is the same as that of a component included in one embodiment of the invention will be described using the same name in other embodiments of the invention. Unless otherwise specified, the description of one embodiment of the invention may be applicable to the following embodiments of the invention, so repeated descriptions will be omitted for brevity.

[23]

[24] In this description, a "smoking article" may be understood to mean an article capable of generating an aerosol, such as a cigarette (tobacco product), cigar, etc. The smoking article may contain a material or substrate for generating an aerosol. In addition, the smoking article may include a solid material based on tobacco raw materials, such as homogenized tobacco web, cut tobacco leaves, homogenized tobacco, etc. The smoking material may contain a volatile substance.

[25] In addition, in this description, "up" or "upward direction" refers to a direction away from the mouth of the user who is drawing on the smoking article, and "down" or "downward direction" refers to a direction toward the mouth of the user who is drawing on the smoking article.

[26] Moreover, phrases such as “A or B” and “A and/or B” may include all possible combinations of the items listed together in the relevant phrase.

[27]

[28] Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[29] As shown in FIG. 1, a smoking article 100 comprises a filter 10 and a portion 20 with a tobacco medium. When the portion with the tobacco medium is burned, cigarette smoke may be formed, and the resulting cigarette smoke may enter the lungs of a smoker through the filter.

[30]

[31] In one embodiment of the present invention, two or more parts with a filter may be provided, in particular from two to four parts with a filter, or two or three parts with a filter. In addition, a filter of a smoking article is proposed, in which two or four holes, preferably three holes, are provided on at least one of the two or more parts with a filter.

[32]

[33] For example, as shown in FIG. 2, the filter 10 may comprise a first portion 11 with a filter and a second portion 13 with a filter. The first portion 11 with a filter and the second portion 13 with a filter may be located at the mouth end (ME) of the cigarette and at the tobacco end (TE) of the cigarette, respectively. The first portion 11 with a filter may comprise multiple openings. An image of the above-mentioned filter is shown in FIG. 4.

[34]

[35] In particular, the total length 15 of the filter may be from 25 to 30 millimeters (mm), preferably 27 mm. The total length of the first part 11 with the filter may be from 5 to 12 mm, preferably 9 mm. The total length of the second part 13 with the filter may be from 15 to 22 mm, preferably 18 mm.

[36]

[37] As shown in FIG. 3, in a filter of a smoking article according to one embodiment of the present invention, the diameter 17 of the cross-sectional opening of the portion 11 with a filter containing multiple openings may be greater than or equal to 1 mm and less than or equal to 2 mm, and may preferably be greater than or equal to 1.6 mm and less than or equal to 1.7 mm.

[38] If the hole diameter is less than 1 mm, a problem may occur when manufacturing the filter. In particular, under the condition of high temperature and high pressure during the manufacturing of the filter, a rod may be inserted to form a hole in the filter. In this case, if the thickness of the rod is less than 1 mm, it may be difficult to obtain a hole of a constant diameter when molding the filter.

[39]

[40] In a filter of a smoking article according to one embodiment of the present invention, the thickness 19 of the outer wall of the filter containing the holes may be greater than or equal to 0.7 mm and less than or equal to 1.3 mm, and may preferably be greater than or equal to 1.05 mm and less than or equal to 1.15 mm, and the thickness of the outer wall may be determined by the shortest distance from the outer wall of the filter to the hole. In addition, if the required size of the hole (e.g. 1.0 mm) is taken into account, the centers of the holes may preferably be formed at a distance of 1.5 mm or more from the outer wall of the filter.

[41] This is due to the fact that when making a cigarette, it is necessary to cut the manufactured filter, and the problem may lie in the destruction of the wall if the thickness 19 of the outer wall of the filter is small.

[42]

[43] In this case, the second part 13 with a filter may be a filter containing cellulose acetate and/or carbon and/or paper. Preferably, if the first part with a filter contains several holes, the first part with a filter may be a cellulose or polymer filter. However, embodiments of the invention are not limited to the above.

[44]

[45] The filter is surrounded by filter wrapping paper. The wrapping paper is the paper that connects the cigarette and the filter and contains perforations made in it. The perforation serves to dilute the smoke components of the product by increasing the degree of tobacco dilution. The perforation can be made 10.5-11 mm from the mouth end of the cigarette. Accordingly, the perforation can be located in the second part 13 with the filter, and the wrapping paper of the second part 13 with the filter can be porous.

[46]

[47] The circumference of the filter 10 of the smoking article according to one embodiment of the present invention may be greater than or equal to 15 mm and less than or equal to 25 mm, and may preferably be greater than or equal to 16.7 mm and less than or equal to 24.2 mm. For example, the circumference of the filter may be 24.2 mm for a regular cigarette, 21.7 mm for a thin cigarette, and 16.7 mm for an ultra-thin cigarette.

[48]

[49] The draw resistance of the filter 10 of the smoking article according to one embodiment of the present invention may be greater than or equal to 50 mm H2O/tip and less than or equal to 150 mm H2O/tip. If the draw resistance is less than 50 mm H2O/tip, the filtration efficiency may be excessively reduced, and if the draw resistance is greater than 150 mm H2O/tip, the user may have difficulty inhaling the aerosol due to a decrease in suction properties.

[50]

[51] The filter may contain a flavoring agent. The flavoring agent may be at least one substance from the group consisting of mint, chocolate, cocoa, coffee, licorice, coriander, vanillin, ethyl vanillin, maltol, ethyl maltol, eucalyptol, acetic acid, mouth flavors, bergamot oil, rosemary, geranium oil, lemon oil, orange oil, lime oil, grapefruit oil, mint oil, ginger oil, Isosweet sweetener and fruit flavoring ingredients, as well as other substances.

[52]

[53] Meanwhile, the smoking article 100 according to one embodiment of the present invention may include a filter 10. The generated cigarette smoke may pass through the filter, which makes it possible to filter out smoke components, and the filter portion located at the tobacco end of the cigarette usually has a high ability to remove smoke components.

[54]

[55] The smoking article 100 may be, in particular, a cigarette of a combustible or heating (non-combustible) type; other variants are also possible.

[56] A smoking article may comprise a portion with a tobacco medium and a wrapper.

[57] The tobacco medium portion typically contains a tobacco material containing nicotine, such as leaf tobacco, and may further contain an auxiliary substance such as a binder, other additives, the above-described flavoring agent, etc. For example, the tobacco medium included in the tobacco medium portion according to the present invention may be in the form of granules containing the tobacco material, the auxiliary substance, etc.

[58] The tobacco leaves may be flue-cured tobacco and/or Burley tobacco and/or Oriental tobacco and/or cigar leaves and/or toasted tobacco; other variations are also possible.

[59]

[60] The present invention will now be described in more detail using examples, however, the present invention is not limited to the following examples.

[61]

[62] Filter design

[63] Example 1

[64] A filter for a smoking article is manufactured, comprising a first part with a filter and a second part with a filter. The first part with a filter is 15 mm long and contains three holes made in it and acetate fiber. The second part with a filter is 12 mm long and contains carbon.

[65]

[66] Example 2

[67] The filter of the smoking product is manufactured similarly to Example 1, except that the length of the first part with the filter was 9 mm, and the length of the second part with the filter was 18 mm.

[68]

[69] Comparative example 1

[70] The filter of the smoking product is made similarly to Example 1, except that the first part with the filter does not have a hole.

[71]

[72] Comparative example 2

[73] The filter of the smoking article is made similarly to Example 1, except that one hole was made in the first part with the filter.

[74]

[75] Comparative example 3

[76] The filter of the smoking article is made similarly to Example 1, except that one hole was made in the first part with the filter, its length was 9 mm, and the second part with the filter had a length of 18 mm.

[77]

[78] The filter design parameters according to Comparative Examples 1-3 and Examples 1 and 2 are summarized in Table 1 (see below).

[79]

[81] In the table above, ME refers to the first part with the filter at the mouth end of the cigarette, and TE refers to the second part with the filter at the tobacco end of the cigarette.

[82]

[83] Compared with the draw resistance of Comparative Example 1, the draw resistance in Example 1 was increased by 8.75 mm H2O/tip, and the draw resistance in Example 2 was increased by 47.75 mm H2O/tip. In other words, the draw resistance in Example 2 is higher than the draw resistance in Example 1, indicating that the resistance increases in the system with the first filter portion and the second filter portion of 9+18 mm in size compared to the system with the first filter portion and the second filter portion of 15+12 mm in size. Unlike Example 1, in Example 2, in which the length of the first filter portion is 9 mm and the perforation is typically located 10.5-11 mm from the mouth end of the cigarette, the perforation is performed in the second filter portion. Thus, in Example 2, the draw resistance is expected to increase as air from the perforation passes successively through the second filtered portion and the first filtered portion.

[84]

[85] Physical properties of the filter

[86] The physical properties of the filters according to Comparative Examples 1-3 and Examples 1 and 2 were measured and summarized in Table 2 (see below).

[87]

[89]

[90] Development of a prototype of a smoking product

[91] The design parameters of the smoking articles to which Comparative Examples 1-3 and Examples 1 and 2 were applied are summarized in Table 3 (see below).

[92]

[94]

[95] Experimental example 1: Analysis of the main smoke stream components of a smoking product

[96] The results obtained from the analysis of the components of the main smoke stream of smoking articles to which Comparative Examples 1-3 and Examples 1 and 2 were applied are summarized in Table 4 (see below).

[97]

[99]

[100] The total particulate matter, tar and nicotine values in Example 2 were reduced by 0.59 mg/cig, 0.38 mg/cig and 0.03 mg/cig, respectively, compared to Comparative Example 1.

[101] In the system with the first part with a filter and the second part with a filter of 9+18 mm, the amount of transferred total volume of particulate matter, tar and nicotine was significantly reduced compared to the system with the first part with a filter and the second part with a filter of 15+12 mm. In particular, in the case of tar and nicotine, the system with the first part with a filter and the second part with a filter of 9+18 mm showed significant results, indicating a decrease in the content by 23.1-24.4% and 11.8-17.6%, respectively, compared to Comparative Example 1. This is due to the fact that the drag resistance of the 9+18 mm system is higher than the drag resistance of the 15+12 mm system, and the second part with a filter, usually located at the end of the cigarette on the tobacco side, is characterized by a high ability to remove smoke components.

[102]

[103] Experimental example 2: Organoleptic evaluation of the hand odor reduction effect of the filter

[104] In order to determine the effect of reducing hand odor by using the filter according to the present invention, cotton gloves were put on the fingers during smoking, and an organoleptic evaluation of the intensity of the cigarette odor felt one hour after finishing smoking was performed. The cotton gloves were sealed immediately after smoking and stored in a sample bag. The odor intensity was compared with that of ordinary fabric.

[105] The organoleptic evaluation was carried out by a panel of fifteen experts who assessed the smoking products to which the filters according to Comparative Example 1 and Example 2 were applied, on a common 9-point scale.

[106] The results of the organoleptic evaluation are summarized in Tables 5 and 6 (see below). Table 5 shows the statistics of the paired samples, and Table 6 shows the results of the tests of the paired samples.

[107]

[109]

[111]

[112] The organoleptic analysis of the post-smoking characteristics of the smoking article to which Example 2 was applied showed a significant reduction in the intensity of foreign odor by 48.3% compared to the smoking article to which Comparative Example 1 was applied. In the smoking article to which Example 2 was applied, it was found that the main smoke flow exits through three holes, which helps to reduce the odor from the hands, since the main smoke flow is usually directed toward the center of the filter when air passes through the perforations.

[113] Therefore, according to Experimental Examples 1 and 2, it can be expected that by using multiple holes and a 9+18 mm system in a smoking article as in Example 2, it will be possible to reduce hand odor and reduce the content of smoke components such as tar, nicotine, etc.

[114]

[115] Although embodiments of the invention have been described with reference to the drawings, it will be apparent to those skilled in the art that various changes and modifications in form and detail may be made to these embodiments without departing from the spirit and scope of the claims and their equivalents. For example, suitable results may be achieved if the described methods are performed in a different order and/or if the components of the described system, architecture, device, or circuit are combined in a different manner and/or replaced or supplemented with other components or their equivalents.

[116] Therefore, other embodiments, variants of implementation of the invention and equivalents of the claims are also included within the scope of the following claims.

Claims (20)

1. A filter for a smoking product containing two or more parts with a filter, in which at least one of the two or more parts with a filter contains from two to four holes, wherein the shortest distance from the outer wall of the filter of the smoking product to the opening is greater than or equal to 0.7 mm and less than or equal to 1.3 mm. 2. A filter for a smoking article according to claim 1, wherein at least one part with the filter contains three openings. 3. A filter for a smoking product according to item 1, wherein the diameter of the holes is greater than or equal to 1 mm and less than or equal to 2 mm. 4. A filter for a smoking product according to item 1, wherein the total length of the filter for the smoking product is 25-30 mm. 5. A filter for a smoking product according to item 1, in which the filter portions comprise a first filter portion located at the mouth end of the cigarette and a second filter portion located at the tobacco end of the cigarette, and The first part with the filter contains several holes. 6. A filter for a smoking product according to item 5, in which the first part with the filter has a length of 5-12 mm, and The second part with the filter has a length of 15-22 mm. 7. A filter for a smoking article according to item 5, wherein the first part with the filter is a cellulose or polymer filter. 8. A filter for a smoking product according to item 5, in which perforation is provided in the second part with a filter, and The filter wrapping paper for the second part with the filter is porous. 9. A filter for a smoking product according to claim 1, wherein the circumference of the filter for a smoking product is greater than or equal to 15 mm and less than or equal to 25 mm. 10. A smoking article containing a smoking article filter according to one of paragraphs 1-9. 11. A smoking article according to claim 10, wherein the smoking article is a combustible cigarette or a heating cigarette.