Patent Application
20240349779
The patent for invention relates to the technical field of heat not burn substrate products, and particularly relates to an aerosol-forming article with a tight segment.
The heating temperature for heating a heat not burn aerosol-forming substrate is usually 250-350° C. Compared with common burning cigarettes, heat not burn aerosol-forming articles can greatly reduce harmful substances in the aerosol-forming substrate to smokers while reserving the taste of conventional cigarettes, without a high-temperature burning pyrolysis process, so that the release amount of tar and other harmful substances in the aerosol-forming substrate is reduced, and thus, the harm of second hand smoking can be greatly reduced.
At present, the heating technology for heating the aerosol-forming article usually includes resistance heating or magnetic heating. Moreover, forms of a heating element usually include a tubular heating tube for heating around the aerosol-forming article and/or a sheet/needlelike heater inserted into the aerosol-forming article for heating. For a resistance heating element, it heats the aerosol-forming article by heat generated by a resistance circuit on the heating element energized. For an electromagnetic heating element, it generates a current and heat by an alternating magnetic field to heat the aerosol-forming article. An existing heat not burn aerosol-forming article includes a filter segment through which a user inhales by mouth and an aerosol-forming substrate segment away from the filter segment. air may enter the aerosol-forming article from the end surface of the aerosol-forming substrate segment and flows out from the end surface of the filter segment. The problem brought about by this is as follows: regardless of heating the aerosol-forming substrate with the heating tube or the heater, on one hand, when the user does not inhale, there is still a small amount of cold air enters the aerosol-forming substrate through the end surface of the aerosol-forming substrate segment, a small part of aerosol in the aerosol-forming substrate segment encounters the cold air and is condensed to form a liquid, and the liquid flows out from the end surface of the aerosol-forming substrate to pollute the device; and on the other hand, when the user inhales, the negative pressure of the aerosol-forming substrate segment is low, which makes the aerosol flow to the filter segment, and when the user does not inhale, without the inhaling of the user, under the action of the negative pressure, the small part of aerosol flows from the filter segment to the aerosol-forming substrate segment and forms the liquid when being condensed, and the liquid flows out from the end surface of the aerosol-forming substrate segment to pollute the device.
Therefore, to prevent the aerosol from being condensed again is an important method for preventing the device from being polluted. In order to solve the above technical problems, the present disclosure is provided.
In an embodiment, the present invention provides an aerosol-forming article, comprising: a tight segment; an aerosol-forming substrate segment; an airway segment; and a filter segment, wherein the airway segment is located between the aerosol-forming substrate segment and the filter segment, wherein the tight segment is located at an end of the aerosol-forming substrate segment away from the filter segment, wherein the airway segment has an airflow channel axially penetrating the airway segment, and wherein an axial air permeability of the tight segment is less than an axial air permeability of the aerosol-forming substrate segment.
Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:
List of numerals: 1—tight segment; 2—aerosol-forming substrate segment; 3—airway segment; 4—filter segment; 31—airflow channel; 32—side flow hole; 33—first airway segment; and 34—second airway segment.
In an embodiment, the present invention provides an aerosol-forming article with a tight segment, including a tight segment 1, an aerosol-forming substrate segment 2, an airway segment 3, and a filter segment 4,
The tight segment 1, the aerosol-forming substrate segment 2, the airway segment 3, and the filter segment 4 are segments coiled and formed in the aerosol-forming article by a wrapper, or segments filled and formed in the aerosol-forming article by being filled into an integrally formed pipe fitting.
Preferably, the tight segment 1 is selected from a non-aerosol-forming material, and is selected from, but is not limited to, a carbon fiber material, a metal membrane, a ceramic or a high molecular material. The high molecular material is selected from, but is not limited to, polyethylene, polypropylene, polyvinyl chloride, polyethylene glycol terephthalate or polylactic acid.
Preferably, the tight segment 1 is selected from the aerosol-forming material, the bulk density of the tight segment 1 is higher than that of the aerosol-forming substrate segment 2, so as to guarantee that the axial air permeability of the tight segment 1 is less than that of the aerosol-forming substrate segment 2. That is, the material of the tight segment 1 is consistent with that of the aerosol-forming substrate segment 2 in this case and both the materials are the aerosol-forming material. The degrees of compaction at both ends are completely inconsistent. The density of the tight segment 1 is higher than that of the aerosol-forming substrate segment 2. The axial air permeability of the tight segment 1 is less than that of the aerosol-forming substrate segment 2. When the tight segment 1 is the aerosol-forming material, it may be integrally formed with the aerosol-forming substrate segment 2 in an aerosol-forming substrate manufacturing process, and a high density aerosol-forming substrate segment is formed by a compaction process as the tight segment 1, which is easy to manufacture.
Preferably, the airway segment 3 is hollow and is provided with a side wall and a hollow cavity, and the hollow cavity is the airflow channel 31 axially penetrating the airway segment 3.
Preferably, a side flow hole 32 penetrating the side wall is further formed in the side wall of the airway segment 3.
Preferably, an axial position of the side flow hole 32 is close to one end of the aerosol-forming substrate segment 2 and is away from one end of the filter segment 4. The reason why the axial position of the side flow hole is closer to one end of the aerosol-forming substrate segment 2 is that the closer the axial position of the side flow hole 32 is to the aerosol-forming substrate segment 2, the easier it is to extract the aerosol from the aerosol-forming substrate segment 2.
Preferably, the number of the side flow holes 32 may be, but is not limited to, 6-8.
Preferably, the airway segment 3 includes a first airway segment 33 close to the aerosol-forming substrate segment 2 and a second airway segment 34 close to the filter segment 4. The first airway segment 33 and the second airway segment 34 may be either integrated or separated.
Preferably, the cross sectional area of the airflow channel 31 of the first airway segment 33 is smaller than or equal to or greater than that of the airflow channel 31 of the second airway segment 34. When the airway segment 3 is hollow, it is provided with a side wall and a hollow cavity, and the hollow cavity is the airflow channel 31 axially penetrating the airway segment 3. The inner diameter of the hollow cavity of the first airway segment 33 is less than or equal to or greater than the inner diameter of the hollow cavity of the second airway segment 34. In this case, a connection therebetween may be either a conical bevel or a vertical section, and either a flat angle structure or a chamfered structure. When the inner diameter of the hollow cavity of the first airway segment 33 is greater than the inner diameter of the hollow cavity of the second airway segment 34, more air is introduced by the first airway segment 33, so that the extraction effect on the aerosol is better, and the amount of the aerosol is greater. When the inner diameter of the hollow cavity of the first airway segment 33 is less than the inner diameter of the hollow cavity of the second airway segment 34, more aerosols may be gathered in the second airway segment 34, so that the condensation effect on the aerosol is better, the cooling effect on the aerosol is better, and the aerosol is more suitable to inhale.
Preferably, the airway segment 3 is cylindrical and is prepared from, but is not limited to, a cellulose acetate fiber material and a high molecular material.
The aerosol-forming substrate segment 2 contains the aerosol-forming material, and the aerosol-forming material is an aerosol-forming material in the form of particles or filaments. Here, the forms of the aerosol-forming material are only illustrated but are not limited to the above several forms actually, and aerosol-forming media capable of generating the aerosol are applicable.
The total length of the aerosol-forming article in the present disclosure may be 30-80 mm, where the range of the tight segment is 2-10 mm, preferably 5 mm; the length of the aerosol-forming substrate segment 2 is 8-25 mm, preferably 12 mm; the length of the airway segment 3 is 10-20 mm, preferably 15 mm; and the length of the filter segment 4 is 8-15 mm, preferably 10 mm.
Compared with the prior art, the present disclosure has the following beneficial effects:
However, after the tight segment is added in front of the aerosol-forming substrate segment, in the inhaling process of the user, because the external gas can hardly be supplemented by the tight segment to enter the aerosol-forming substrate segment, the negative pressure of the aerosol-forming substrate segment will not increase, and thus the aerosol can be prevented from flowing back to the aerosol-forming substrate segment and flowing out from the end surface of the aerosol-forming substrate segment when inhaling is stop, so as to further solve the problem that the aerosol condensate flows out from the end surface of the aerosol-forming substrate segment to pollute the device.
When the inner diameter of the hollow cavity of the first airway segment 33 is greater than the inner diameter of the hollow cavity of the second airway segment 34, more air is introduced by the first airway segment 33, so that the extraction effect on the aerosol is better, and the amount of the aerosol is greater.
When the inner diameter of the hollow cavity of the first airway segment 33 is less than the inner diameter of the hollow cavity of the second airway segment 34, more aerosols may be gathered in the second airway segment 34, so that the condensation effect on the aerosol is better, the cooling effect on the aerosol is better, and the aerosol is more suitable to inhale.
The present disclosure will be further described in detail below with reference to embodiments.
Persons skilled in the art will understand that the embodiments below are merely used for explaining the present disclosure and are not to limit the scope of the present disclosure. The embodiments without specific technologies or conditions indicated are carried out according to technologies or conditions described by literature in the art or description of a product. The used materials or devices not indicated by manufacturers are conventional products which can be purchased.
Persons skilled in the art may understand that unless otherwise specified, the singular forms “a”, “an”, “the” and “this” used herein may also include plural forms. It should be further understood that the expression “include” used in the description of the present disclosure refers to the existence of the characteristics, integers, steps, operations, components and/or assemblies, but not excludes the existence or addition of one or more other characteristics, integers, steps, operations, components, assemblies and/or their groups. It should be understood that when a component is referred to as being “connected to” another component, it may be directly connected to the another component or there may be an intermediate component. In addition, “connection” used herein may include wireless connection.
In the description of the present disclosure, unless otherwise specified, “a plurality of” means two or more than two. Orientation or position relationships indicated by the terms such as “inside”, “up”, “down” and the like are based on orientation or position relationships shown in the drawings, and are used only for ease and brevity of illustration and description of the present disclosure, rather than indicating or implying that the mentioned apparatus or component must have a particular orientation or must be constructed and operated in a particular orientation. Therefore, such terms should not be construed as limiting of the present disclosure.
In the description of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the terms “mount”, “connect”, “connection”, and “provided with” should be understood in a broad sense. For example, the connection may be fixed connection, detachable connection, or integral connection; or the connection may be mechanical connection or electrical connection; or the connection may be direct connection, or indirect connection through an intermediate. Persons of ordinary skill in the art may understand the specific meanings of the foregoing terms in the present disclosure according to specific situations.
Persons skilled in the art may understand that unless otherwise defined, all terms used herein including technical terms and scientific terms have the same meanings as those commonly understood by persons of ordinary skill in the art. It should be further understood that those terms defined in a general dictionary should be understood as having meanings consistent with the meanings in the context in the prior art. Unless otherwise defined herein, those terms will not be explained by idealized or too formal implications.
In the embodiment, the total length of an aerosol-forming article may be 42 mm, where the length of the tight segment is 5 mm, the length of the aerosol-forming substrate segment 2 is 12 mm, the length of the airway segment 3 is 15 mm, and the length of the filter segment 4 is 10 mm.
The aerosol-forming article with a tight segment shown in
The tight segment 1 is selected from a non-aerosol-forming material such as a carbon fiber material.
The airway segment 3 is hollow and is provided with a side wall and a hollow cavity, and the hollow cavity is the airflow channel 31 axially penetrating the airway segment 3.
A side flow hole 32 penetrating the side wall is further formed in the side wall of the airway segment 3.
An axial position of the side flow hole 32 is close to one end of the aerosol-forming substrate segment 2 and is away from one end of the filter segment 4.
The number of the side flow holes 32 is 6.
The airway segment 3 is cylindrical and is prepared from a cellulose acetate fiber material.
The structure of the aerosol-forming article with a tight segment shown in
The cross sectional area of the airflow channel 31 of the first airway segment 33 is smaller than or that of the airflow channel 31 of the second airway segment 34. When the airway segment 3 is hollow, it is provided with a side wall and a hollow cavity, and the hollow cavity is the airflow channel 31 axially penetrating the airway segment 3. The inner diameter of the hollow cavity of the first airway segment 33 is less than the inner diameter of the hollow cavity of the second airway segment 34, and in this case, the connection therebetween may be a conical bevel.
When the inner diameter of the hollow cavity of the first airway segment 33 is less than the inner diameter of the hollow cavity of the second airway segment 34, more aerosols may be gathered in the second airway segment 34, so that the condensation effect on the aerosol is better, the cooling effect on the aerosol is better, and the aerosol is more suitable to suck.
The structure of the aerosol-forming article with a tight segment shown in
The cross sectional area of the airflow channel 31 of the first airway segment 33 is greater than that of the airflow channel 31 of the second airway segment 34. When the airway segment 3 is hollow, it is provided with a side wall and a hollow cavity, and the hollow cavity is the airflow channel 31 axially penetrating the airway segment 3. The inner diameter of the hollow cavity of the first airway segment 33 is greater than the inner diameter of the hollow cavity of the second airway segment 34, and in this case, the connection therebetween may be a conical bevel.
When the inner diameter of the hollow cavity of the first airway segment 33 is greater than the inner diameter of the hollow cavity of the second airway segment 34, more air is introduced by the first airway segment 33, so that the extraction effect on the aerosol is better, and the amount of the aerosol is greater.
The structure of the aerosol-forming article with a tight segment shown in
The tight segment 1 may be integrally formed with the aerosol-forming substrate segment 2 in an aerosol-forming substrate manufacturing process, and a high density aerosol-forming substrate segment is formed by a compaction process as the tight segment 1, which is easy to manufacture.
While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.
The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202111621688.1 | Dec 2021 | CN | national |
This application is a continuation of International Patent Application No. PCT/CN2022/129910, filed on Nov. 4, 2022, which claims priority to Chinese Patent Application No. 202111621688.1, filed on Dec. 28, 2021. The entire disclosure of both applications is hereby incorporated by reference herein.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2022/129910 | Nov 2022 | WO |
| Child | 18758664 | US |
