KR20230103125A - Odor reducing filter and aerosol generating article comprising it - Google Patents

Abstract

An odor reduction filter according to various embodiments includes a filter tow; a groove sheet for winding the filter tow; a filter sheet winding the grooved sheet; and an air tunnel formed by the groove sheet and the filter sheet and extending in a winding axis direction of the filter tow and the groove sheet.

Description

Odor reduction filter and aerosol generating article containing the same {ODOR REDUCING FILTER AND AEROSOL GENERATING ARTICLE COMPRISING IT}

The following embodiments relate to odor reduction filters and cigarettes using the same.

When the cigarette is carried by the user, the cigarette is placed between the user's fingers and the user inhales the aerosol through inhalation. At this time, the mainstream smoke may move through a path inside the cigarette and flow out through a ventilation means (eg, perforation) of the cigarette to come into contact with the user's finger. Accordingly, a bad smell and a feeling of heat due to the mainstream smoke may be transferred to the user's fingers. For example, Patent Publication No. 10-2011-0128027 discloses a finger thimble for smoking.

An object according to an embodiment is to prevent contaminated air or aerosol from being discharged through perforations by blocking movement in a direction opposite to one direction while enabling one-way movement of external air for diluting an aerosol containing a medium. will be.

An object according to an embodiment is to reduce the smell of cigarettes emitted from hands after smoking by blocking aerosols emitted through perforations during smoking using an odor reduction filter.

An odor reduction filter according to various embodiments includes a filter tow; a groove sheet for winding the filter tow; a filter sheet winding the grooved sheet; and an air tunnel formed by the groove sheet and the filter sheet and extending in a winding axis direction of the filter tow and the groove sheet.

In one embodiment, the groove sheet may be formed of a non-porous material, and the filter sheet may be formed of a porous material.

In one embodiment, the filter may further include a tip paper surrounding the outside of the odor reduction filter, and the tip paper may include a perforation through which outside air flows into the filter.

In one embodiment, the perforation may be located on a path of the air tunnel.

In one embodiment, an air flow blocking member disposed at one end of the air tunnel to prevent passage of air flow may be further included.

In one embodiment, the air flow blocking member may include a blocking tube including a plurality of grooves formed in the axial direction.

An aerosol-generating article according to various embodiments includes a media segment containing a media; and a filter segment disposed downstream of the medium segment, the filter segment comprising: a first flow path through which mainstream smoke flows and extending in a longitudinal direction of the aerosol-generating article; A second flow path through which air introduced from the outside of the aerosol-generating article flows and extending in a longitudinal direction of the aerosol-generating article may be included, and the first flow path and the second flow path may be independent.

In an embodiment, the first flow path may include a filter tow, and the second flow path may be formed by a groove sheet around which the filter tow is wound and a filter sheet around which the groove sheet is wound.

In one embodiment, the groove sheet may be formed of a non-porous material, and the filter sheet may be formed of a porous material.

In one embodiment, the filter may further include a tip paper covering the outside of the aerosol-generating article, and the tip paper may include a perforation through which external air is introduced into the filter.

In one embodiment, a first airflow entering the media segment and flowing in a downstream direction of the aerosol-generating article; and a second air stream entering the aperture and flowing in a downstream direction of the aerosol-generating article, wherein the first air stream and the second air stream may flow independently.

In one embodiment, an air flow blocking member disposed at an upstream end of the second flow path may be further included.

In one embodiment, the air flow blocking member may include a blocking tube including a plurality of grooves formed in the axial direction.

In one embodiment, the apparatus further includes a cavity segment disposed downstream of the medium segment, and the cavity segment may cool the aerosol generated in the medium segment.

An odor reduction filter and an aerosol generating article according to an embodiment allow outside air to move in one direction to dilute an aerosol containing a medium while blocking the movement in a direction opposite to one direction so that contaminated air or aerosol is not perforated. release can be prevented.

An odor reducing filter and an aerosol-generating article according to an embodiment may reduce a cigarette smell from hands after smoking by blocking aerosol emitted through perforations during smoking.

Effects of the odor reduction filter and aerosol generating article according to an embodiment are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a view schematically showing the structure of an odor reduction filter according to an embodiment.
2 is a view schematically showing the structure of an odor reduction filter including a tip paper according to an embodiment.
3 is a cross-sectional view of an odor reduction filter according to an embodiment.
4 is a cross-sectional view of an odor reduction filter including an airflow blocking member according to an embodiment.
5A is a view schematically showing a structure of an odor reduction filter including a blocking tube according to an embodiment.
5B is a view schematically showing a cross section of a blocking tube according to an embodiment.
6 is a schematic diagram of an aerosol-generating article according to one embodiment.
7 is a diagram schematically showing the movement of airflow in an odor reduction filter of an aerosol-generating article according to one embodiment.
8 is a diagram schematically illustrating the movement of airflow within an odor reduction filter of an aerosol-generating article according to another embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes can be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents or substitutes to the embodiments are included within the scope of rights.

Terms used in the examples are used only for the purpose of explanation and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

In addition, in the description with reference to the accompanying drawings, the same reference numerals are given to the same components regardless of reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element may be directly connected or connected to the other element, but there may be another element between the elements. It should be understood that may be "connected", "coupled" or "connected".

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, descriptions described in one embodiment may be applied to other embodiments, and detailed descriptions will be omitted to the extent of overlap.

In the following embodiments, "aerosol-forming substrate" may mean a material capable of forming an aerosol. Aerosols may contain volatile compounds. Aerosol-forming substrates may be solid or liquid. For example, the solid aerosol-forming substrate may include a solid material based on tobacco raw materials such as leaf tobacco, cut filler, and reconstituted tobacco, and the liquid aerosol-forming substrate may contain nicotine, tobacco extract, and/or various flavoring agents. It may contain a liquid composition material based on it. However, the scope of the present disclosure is not limited to these examples.

In the following embodiments, an “aerosol-generating article” may refer to an article containing a medium, through which an aerosol passes and the medium is transferred. A representative example of an aerosol-generating article would be a cigarette, but the scope of the present disclosure is not limited thereto.

In the following embodiments, "upstream" or "upstream direction" means a direction away from the user's (smoker's) mouth, and "downstream" or "downstream" means a direction closer to the user's mouth can mean The terms upstream and downstream may be used to describe the relative positioning of elements that make up an aerosol-generating article. For example, in the aerosol-generating article 1 illustrated in FIG. 6 , medium segment 20 is located upstream or upstream of cavity segment 30 , and cavity segment 30 is downstream or downstream of medium segment 20 . located in the downstream direction.

In the following embodiments, “puff” refers to a user's inhalation, and inhalation refers to a situation in which the user's mouth or nose is pulled into the user's oral cavity, nasal cavity, or lungs.

In the following embodiments, "mainstream smoke" refers to smoke and/or aerosol that is directly sucked into the user's mouth when the user inhales the aerosol-generating article and/or cigarette, and "sidestream smoke" refers to the aerosol-generating article and/or cigarette Refers to smoke and/or aerosols generated directly from burning parts.

Hereinafter, various embodiments according to the accompanying drawings will be described.

1 is a view schematically showing the structure of an odor reduction filter 10 according to an embodiment.

Referring to FIG. 1 , an odor reduction filter 10 according to an exemplary embodiment may include a filter tow 11 , a groove sheet 12 , and a filter sheet 13 .

In one embodiment, the filter tow 11 may include a filter material such as paper, cellulose acetate fibers, or the like. The filter tow 11 according to an embodiment may filter harmful substances included in mainstream smoke passing through the odor reduction filter 10 .

In one embodiment, the groove sheet 12 has a non-smooth outer surface, which is formed by a plurality of elongated grooves formed by ridges extending in the longitudinal direction of the groove sheet 12. ) may be included. The plurality of grooves may form a serpentine outer surface extending in one direction.

In one embodiment, the grooved sheet 12 may be formed of a non-porous material. A non-porous material according to an embodiment refers to a material having no or very small gaps or holes on the material and having properties through which liquid and/or gas cannot pass.

Referring continuously to FIG. 1 , the groove sheet 12 according to an embodiment may be arranged to be wound around the filter tow 11 .

In one embodiment, the filter sheet 13 may have a smooth outer surface. In other embodiments, the filter sheet 13 may have a non-smooth outer surface. The filter sheet 13 according to one embodiment or another embodiment may be arranged to be wound on the surface of the groove sheet 12 arranged to be wound around the filter tow 11 .

In one embodiment, the filter sheet 13 may be formed of a porous material. A porous material according to an embodiment includes a lot of small gaps or holes on the inside or surface of the material, so that liquid and/or gas can pass therethrough.

As the filter sheet 13 according to one embodiment or another embodiment is arranged to be wound on the surface of the groove sheet 12, a space according to one embodiment is formed between the groove sheet 12 and the filter sheet 13. It can be. The space according to an embodiment may include an air tunnel (AT) extending in a winding axis direction around which the filter tow and the groove sheet are wound.

2 is a view schematically showing the structure of the odor reduction filter 10 including the tip paper 14 according to an embodiment.

Referring to FIG. 2 , the odor reduction filter 10 according to an embodiment may further include a tip paper 14. Tip paper is the material that generally wraps around aerosol-generating articles and/or cigarettes. The tip paper 14 according to an embodiment may be disposed to be wound around the outer surface of the filter sheet 13 .

The tip paper 14 according to one embodiment may include perforations 142 . In one embodiment, the perforation 142 may be disposed on the side of the smoker's mouth in the tip paper 14 according to an embodiment, and when the user puffs an aerosol-generating article and/or cigarette, the perforation 142 allows the outside to pass through. Air can be sucked into the filter along with the mainstream smoke, diluting the toxic effects of the mainstream smoke.

In one embodiment, the tip paper 14 may be arranged to be wound on the outer surface of the filter sheet 13, and the perforations 142 included in the tip paper 14 are on the path of the air tunnel AT. can be located Perforations 142 according to an embodiment are positioned on the path of the air tunnel (AT), so that when a user puffs an aerosol-generating article and/or a cigarette, external air is introduced through the perforations 142, and external air may pass through the filter sheet 13 formed of a porous material and be transferred to the user's mouth along the air tunnel AT. Outside air can pass through the filter sheet 13 formed of a porous material, but cannot pass through the grooved sheet 12 formed of a non-porous material.

3 is a cross-sectional view of an odor reduction filter 10 according to an embodiment.

Referring to FIG. 3 , the odor reduction filter 10 according to an embodiment includes a filter tow 11 disposed in a central portion, a groove sheet 12 around which the filter tow 11 is wound, and an outer portion of the groove sheet 12 It may include a filter sheet 13 winding the surface. In addition, the odor reduction filter 10 according to an embodiment may include a tip paper 14 wound on an outer surface of the filter sheet 13 . The odor reduction filter 10 according to an embodiment may further include an air tunnel AT formed by the groove sheet 12 and the filter sheet 13 .

4 is a cross-sectional view of an odor reduction filter 10 including an airflow blocking member 15 according to an exemplary embodiment.

Referring to FIG. 4 , the odor reduction filter 10 according to an exemplary embodiment may further include an airflow blocking member 15 . The air flow blocking member 15 according to an embodiment may be formed of a non-porous material through which gas and/or aerosol cannot pass. Preferably, none of mainstream smoke, sidestream smoke and/or outside air can pass through the airflow blocking member 15 .

Referring continuously to FIG. 4 , the air flow blocking member 15 according to an exemplary embodiment may be disposed at an upstream end of the air tunnel AT. When the airflow blocking member 15 according to an embodiment is disposed at the upstream end of the air tunnel AT, when a user puffs an aerosol generating article and/or a cigarette, the perforation 142 of the tip paper 14 Only outside air is transferred to the user's mouth through the air tunnel AT, and mainstream smoke cannot enter the air tunnel AT due to the air flow blocking member 15 . Accordingly, it is possible to prevent odor and/or mainstream smoke, which is a source of odor, from being transferred to the user's fingers through the perforation 142 .

In one embodiment, the airflow blocking member 15 may be implemented in various shapes. In order to prevent gas and/or aerosol from flowing into one end of the air tunnel AT, the cross section of the air flow blocking member 15 is preferably formed in the same shape as the cross section of the air tunnel AT, but it is essential to this It is not limited. The air flow blocking member 15 according to an embodiment may be disposed at one end of the air tunnel AT by an interference fit method, a coupling method by disposing an attractive material, a plug-in method, or the like, and any coupling method. It may be arranged to prevent a significant amount of gas and/or aerosol from entering the inside of the air tunnel (AT).

The airflow blocking member 15 according to an embodiment may include a blocking tube 150 disposed on one side of the odor reduction filter 10 to block all ends of the plurality of air tunnels AT.

Hereinafter, the blocking tube 150, which is one of various embodiments of the air flow blocking member 15, will be described in detail.

5A and 5B are diagrams schematically illustrating a structure of the odor reduction filter 10 including the blocking tube 150 and a cross section of the blocking tube 150 according to an exemplary embodiment.

Referring to FIG. 5A , the blocking tube 150 according to an embodiment may be formed in a cylindrical shape having the same circumference as the odor reduction filter 10 . Referring to FIG. 5B , the blocking tube 150 according to an embodiment may include a plurality of grooves 152 extending in the axial direction of the blocking tube 150 (see FIG. 5B ).

The plurality of grooves 152 according to an embodiment may be formed of a non-porous material through which gas and/or aerosol cannot pass. Preferably, none of mainstream smoke, sidestream smoke and/or outside air can pass through the plurality of grooves 152 according to an embodiment.

The plurality of grooves 152 formed on the inside of the blocking tube 150 according to an embodiment and extending in the axial direction correspond one-to-one with the air tunnel (AT) included in the odor reduction filter 10 according to an embodiment. It can be. In one embodiment, the plurality of grooves 152 of the blocking tube 150 and the air tunnel (AT) have a one-to-one correspondence structure in the opposite direction from the direction in which the blocking tube 150 of the odor reduction filter 10 is disposed. Moving air cannot be introduced into the air tunnel (AT).

The blocking tube 150 according to an embodiment may be manufactured through a single manufacturing process, thereby improving manufacturing convenience when manufacturing the odor reducing filter 10 and/or the aerosol generating article 1 disclosed herein. .

6 is a schematic diagram of an aerosol-generating article 1 according to an embodiment.

Referring to FIG. 6 , an aerosol-generating article 1 according to an embodiment may include a filter segment, a medium segment 20 and a cavity segment 30.

In one embodiment, the filter segment may preferably include the odor reduction filter 10 according to one embodiment. The filter segment may include a filter tow 11, a groove sheet 12, a filter sheet 13, an air tunnel (AT), and a tip paper 14 (see FIG. 2). A filter segment according to an embodiment, preferably a odor reduction filter 10, may be disposed downstream of the medium segment 20.

In one embodiment, the medium segment 20 may contain a medium. The medium according to an embodiment may include a solid material based on tobacco raw materials such as leaf tobacco, cut filler, and reconstituted tobacco, and a liquid composition based on nicotine, tobacco extract, and/or various flavoring agents, but is not necessarily limited thereto. it is not going to be

In one embodiment, the cavity segment 30 may perform a cooling function for aerosol generated in the medium segment 20 of the aerosol-generating article 1 and moving in a downstream direction.

With continued reference to FIG. 6 , the aerosol-generating article 1 according to an embodiment may include wrappers 10a, 20a, and 30a (wrappers) surrounding each segment. The wrappers 10a, 20a, and 30a according to an embodiment may serve to protect and support internal components of each segment from external impact and/or dust.

Hereinafter, a filter segment according to an embodiment, preferably a structure of the odor reduction filter 10 and a movement pattern of airflow inside the odor reduction filter 10 will be described in detail.

7 is a schematic representation of the movement of airflow within a filter segment of an aerosol-generating article 1 according to an embodiment.

Referring to FIG. 7 , the filter segment according to an embodiment may further include a first flow path P1 and a second flow path P2.

In one embodiment, the first flow path P1 may extend in the longitudinal direction of the aerosol-generating article 1 . A first air current (eg, a solid line arrow in FIG. 7 ) may flow through the first flow path P1 according to an embodiment. The first airflow according to an embodiment may include mainstream smoke. The first flow path P1 according to an embodiment may be formed on a space in which the filter tow 11 is disposed, and the first airflow moving through the first flow path P1 is a medium segment 20 , which flows downstream of the aerosol-generating article 1 and can be filtered out by the filter tow 11 .

In one embodiment, the second flow path P2 is a path through which external air flows, and may extend in the longitudinal direction of the aerosol-generating article 1 . A second air current (eg, a dotted line arrow in FIG. 7 ) may flow through the second flow path P2 according to an embodiment. The second airflow according to an embodiment may be introduced through the perforations 142 of the tip paper 14 and flow in a downstream direction of the aerosol-generating article 1 . The second flow path P2 according to an embodiment may be a path in a space formed by the groove sheet 12 and/or the filter sheet 13 .

Referring to FIG. 7 , when the filter segment, preferably the upstream end of the air tunnel AT of the odor reduction filter 10 is not blocked, the first flow path P1 is formed on the air tunnel AT. path may be included. In this case, the mainstream smoke moving along the first flow path P1 may be transferred to the user's fingers through the perforations 142 of the tip paper 14 . To prevent this, an air flow blocking member 15 may be included in a filter segment, preferably, an upstream end of the air tunnel AT of the odor reduction filter 10 (see FIG. 8 ).

8 is a schematic representation of the movement of airflow within a filter segment of an aerosol-generating article 1 according to another embodiment.

Referring to FIG. 8 , an air flow blocking member 15 is disposed at an upstream end of the air tunnel AT of the filter segment of the aerosol-generating article 1, preferably the odor reduction filter 10, according to an embodiment. It can be.

In one embodiment, the airflow blocking member 15 may include a blocking tube 150 . The blocking tube 150 according to an embodiment may be formed in a cylindrical shape having the same circumference as the odor reduction filter 10 (see FIG. 5A ). The blocking tube 150 according to an embodiment may include a plurality of grooves 152 extending in the axial direction of the blocking tube 150 (see FIG. 5B ).

The plurality of grooves 152 according to an embodiment may be formed of a non-porous material through which gas and/or aerosol cannot pass. Preferably, none of mainstream smoke, sidestream smoke and/or outside air can pass through the plurality of grooves 152 according to an embodiment.

The plurality of grooves 152 formed on the inside of the blocking tube 150 according to an embodiment and extending in the axial direction correspond one-to-one with the air tunnel (AT) included in the odor reduction filter 10 according to an embodiment. It can be. In one embodiment, the plurality of grooves 152 of the blocking tube 150 and the air tunnel (AT) have a one-to-one correspondence structure in the opposite direction from the direction in which the blocking tube 150 of the odor reduction filter 10 is disposed. Moving air cannot be introduced into the air tunnel (AT).

The blocking tube 150 according to an embodiment may be manufactured through a single manufacturing process, thereby improving manufacturing convenience when manufacturing the odor reducing filter 10 and/or the aerosol generating article 1 disclosed herein. .

In one embodiment, the first air flow (eg, solid line arrow in FIG. 8 ) is directed to the air tunnel by an air flow blocking member 15, preferably a blocking tube 150, disposed at an upstream end of the air tunnel AT. It cannot move to (AT) and can only move to the center of the odor reduction filter 10 where the filter tow 11 is disposed. In addition, the second airflow (eg, the dotted line arrow in FIG. 8 ) according to an embodiment can move only through the air tunnel AT and cannot move to the area where the filter tow 11 is disposed. That is, the first air current (eg, solid line arrow in FIG. 8 ) and the second air current (eg, dotted line arrow in FIG. 8 ) may flow independently. Accordingly, the first flow path P1 through which the first air current (eg, solid line arrow in FIG. 8 ) flows and the second flow path through which the second air flow (eg, dotted line arrow in FIG. 8 ) flows may also be independent of each other.

As described above, as the first flow path P1 and the second flow path P2 are formed independently, when a user inhales an aerosol through the aerosol-generating article 1 according to an embodiment, By preventing mainstream smoke from flowing into the air tunnel (AT) while maintaining the function of diluting the toxicity of mainstream smoke by introducing outside air through the perforation 142, the odor and/or odor caused by mainstream smoke is distributed to the user's fingers. can prevent

As described above, although the embodiments have been described with limited drawings, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved.

Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

Claims (14)

filter tow;
a groove sheet for winding the filter tow;
a filter sheet winding the grooved sheet; and
An air tunnel formed by the groove sheet and the filter sheet extending in the winding axis direction of the filter tow and the groove sheet
including,
Odor reduction filter.
According to claim 1,
wherein the groove sheet is formed by a non-porous material and the filter sheet is formed by a porous material;
Odor reduction filter.
According to claim 1,
Further comprising a tip paper surrounding the outside of the odor reduction filter,
The tip paper includes a perforation through which outside air flows into the filter,
Odor reduction filter.
According to claim 3,
The perforation is located on the path of the air tunnel,
Odor reduction filter.
According to claim 1,
Further comprising an air flow blocking member disposed at one end of the air tunnel to block the passage of air flow.
Odor reduction filter.
According to claim 5,
The air flow blocking member comprises a blocking tube including a plurality of grooves extending in the axial direction,
Odor reduction filter.
In the aerosol-generating article,
a media segment containing media; and
a filter segment disposed downstream of the media segment;
The filter segment is
a first flow path through which mainstream smoke flows and extending in the longitudinal direction of the aerosol-generating article;
A second flow path extending in the longitudinal direction of the aerosol-generating article through which air introduced from the outside of the aerosol-generating article flows
including,
The first flow path and the second flow path are independent,
Aerosol-generating articles.
According to claim 7,
the first flow pass includes a filter tow;
The second flow path is formed by a groove sheet winding the filter tow and a filter sheet winding the groove sheet.
Aerosol-generating articles.
According to claim 8,
wherein the groove sheet is formed by a non-porous material and the filter sheet is formed by a porous material;
Aerosol-generating articles.
According to claim 7,
Further comprising a tip paper surrounding the outside of the aerosol-generating article,
The tip paper includes a perforation through which outside air flows into the filter,
Aerosol-generating articles.
According to claim 10,
a first airflow generated in the medium segment and flowing in a downstream direction of the aerosol-generating article; and
a second airflow entering the perforations and flowing in a downstream direction of the aerosol-generating article;
The first airflow and the second airflow flow independently,
Aerosol-generating articles.
According to claim 7,
Further comprising an air flow blocking member disposed at an upstream end of the second flow path,
Aerosol-generating articles.
According to claim 12,
The air flow blocking member comprises a blocking tube including a plurality of grooves formed in the axial direction,
Aerosol-generating articles.
According to claim 7,
Further comprising a cavity segment disposed downstream of the medium segment;
The cavity segment cools the aerosol generated in the medium segment.
Aerosol-generating articles.

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