CN116761522A - Filter for smoking articles - Google Patents
Filter for smoking articles Download PDFInfo
- Publication number
- CN116761522A CN116761522A CN202280009806.XA CN202280009806A CN116761522A CN 116761522 A CN116761522 A CN 116761522A CN 202280009806 A CN202280009806 A CN 202280009806A CN 116761522 A CN116761522 A CN 116761522A
- Authority
- CN
- China
- Prior art keywords
- filter
- vapor
- aerosol
- generating article
- generating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000391 smoking effect Effects 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002808 molecular sieve Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000443 aerosol Substances 0.000 description 28
- 239000000758 substrate Substances 0.000 description 27
- 238000010438 heat treatment Methods 0.000 description 22
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 18
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 12
- 241000208125 Nicotiana Species 0.000 description 11
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 11
- 235000011187 glycerol Nutrition 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 235000019505 tobacco product Nutrition 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229960002715 nicotine Drugs 0.000 description 2
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- OVOUKWFJRHALDD-UHFFFAOYSA-N 2-[2-(2-acetyloxyethoxy)ethoxy]ethyl acetate Chemical compound CC(=O)OCCOCCOCCOC(C)=O OVOUKWFJRHALDD-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical compound CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019506 cigar Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003571 electronic cigarette Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- 239000001069 triethyl citrate Substances 0.000 description 1
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 description 1
- 235000013769 triethyl citrate Nutrition 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/17—Filters specially adapted for simulated smoking devices
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
A filter for a vapor-generating article comprising a filter body, the filter body comprising: a first end arranged as a suction nozzle; a second end opposite the first end, the second end being arranged for attachment to a vapor-generating article; the filter further includes a cavity within the filter body between the first end and the second end, the cavity configured to allow fluid including water to flow through the filter body from the second end to the first end; wherein the cavity comprises a filter portion arranged to filter fluid as it flows through the filter body; and wherein the filter portion is arranged to remove at least some of the water from the fluid as the fluid flows through the filter body.
Description
Technical Field
The present disclosure relates to an aerosol-generating article for use in an aerosol-generating system in which an aerosol-generating substrate is heated to form an aerosol. The present disclosure is particularly applicable to a portable aerosol generating device that may be self-contained and cryogenic. Such devices may heat rather than burn tobacco or other suitable aerosol matrix material by conduction, convection, and/or radiation to produce an aerosol for inhalation.
Background
The popularity and use of devices (also known as vaporizers) with reduced or revised risks has grown rapidly over the past few years, which helps to assist habitual smokers who want to quit smoking in quitting traditional tobacco products such as cigarettes, cigars, cigarillos and cigarettes. Various devices and systems are available for heating or warming an aerosolizable substance, as opposed to burning tobacco in conventional tobacco products.
Common devices with reduced risk or modified risk are heated matrix aerosol generating devices or heated non-burning devices. This type of device produces an aerosol or vapor by heating an aerosol substrate, typically comprising moist tobacco leaves or other suitable aerosolizable materials, to a temperature typically in the range of 150 ℃ to 350 ℃. The aerosol released by heating the aerosol substrate, but not burning or burning the aerosol substrate, includes the components sought by the user, but not the byproducts of the burning and burning.
In such devices, the aerosol substrate is typically included in a consumable held within a heating chamber and heated by a heater. The consumable comprises a quantity of aerosol-generating substrate and is capable of generating a quantity of aerosol.
Due to the portable nature of the aerosol-generating device, the environmental conditions under which the device is used by a user may vary. This has the following effect: the aerosol matrix within the consumable absorbs different amounts of moisture depending on the humidity of the surrounding environment in which the device is used, and the time the consumable has been exposed to air after the user has opened the package of the consumable in order to insert the consumable into the device.
Humidity in the generated aerosol is undesirable because its relatively high specific heat capacity will produce an unpleasant, potentially dangerous scalding aerosol for the user to inhale.
The present invention aims to provide a device for reducing the humidity of aerosol.
Disclosure of Invention
According to a first aspect, there is provided a filter for a vapour generating article, the filter comprising a filter body comprising a first end arranged as a mouthpiece and a second end opposite the first end, the second end being arranged for attachment to the vapour generating article. The filter further includes a cavity within the filter body between the first end and the second end. The cavity is configured to allow fluid including water to flow from the second end through the filter body to the first end. The cavity comprises a filter portion arranged to filter fluid as it flows through the filter body. The filter portion is arranged to remove at least some of the water from the fluid as the fluid flows through the filter body.
In some extensions, the filter portion may be arranged to remove substantially all of the water in the fluid.
Because vapor-generating articles are used in a variety of locations due to their portability, the environmental conditions experienced by the filter cannot be controlled to be the same as the amount of moisture experienced by and absorbed by the filter, depending on the humidity of the surrounding environment and the time the filter has been exposed to this environment. High humidity causes scalding vapors, which are undesirable to the user. The present filter uses a filter portion to dehumidify from vapor because moisture entering the filter from the environment cannot be controlled. The filter thus provides effective filtration, which will remove water from the vapor as it flows through the filter, thereby improving the overall user experience.
In some examples, the filter portion includes a selective filter media arranged to selectively filter water from the fluid. Providing a selective filter medium arranged to selectively filter water from the fluid helps ensure that more water is removed from the vapor because other components within the fluid than water are allowed to pass through the filter rather than be removed by the filter.
Preferably, the selective filter media comprises a water absorbing media. The water-absorbing media helps remove more water from the fluid as it passes through the filter portion. Removing more water from the fluid (in this case the generated vapor) reduces the humidity of the generated vapor. This in turn provides a cooler vapor for the user to inhale, thereby giving the user a more pleasant experience during use.
The water-absorbing medium may comprise any suitable selectively water-absorbing material, such as silica, at least one molecular sieve, or at least one hydrophilic sponge material. These may be used alone or in combination with each other. Of course, any other suitable water absorbing material may be used alone or in combination with any other water absorbing material.
Preferably, the second end of the filter is releasably attached to the vapor-generating article. Thus, when a user desires to use the article, a filter may be attached to the vapor-generating article, which is removed from the article when the user has consumed the substrate within the article. In this way, the filter is a reusable filter and may be used with multiple vapor-generating articles.
Typically, the vapor-generating device includes a consumable article containing a substrate and a filter attached to the consumable. Once the matrix is consumed by the user, the vapor generating device will be discarded as the consumable article is no longer usable. Since the filter is attached to the consumable article, the filter is also discarded at the same time. As a result, filters typically include simple techniques that are not costly to discard.
By providing a filter that can be releasably attached to a vapor-generating article (also referred to as a consumable article), the filter can be reused with a subsequent vapor-generating article rather than being discarded each time. For example, the filter can be used from 20 to 100 times, so that the filter can be used with 20 to 100 different vapor-generating articles before the filter needs to be replaced and discarded.
This has the effect that more complex and expensive techniques can be used within the filter, and in particular more efficient and effective filtration techniques can be employed within the filter. Illustratively, using a reusable filter that requires replacement after every 20 to 100 vapor-generating articles means that the technology within the filter can be 20 to 100 times the cost of a single-use disposable filter. Thus, the filter having the second end of the filter releasably attached to the vapor-generating article provides a reusable filter comprising selective filter media to efficiently and effectively remove water from the vapor. Advantageously, the filter may include a technology that is capable of removing water from the vapor using technology that was previously impractical due to cost.
According to another aspect, there is provided a vapor-generating article comprising a first end arranged for connection with a vapor-generating device, and a filter, wherein the filter is attached to a second end of the vapor-generating device. The filter is a filter according to any one of the above filters.
According to another aspect, there is provided a vapor generation system comprising a filter according to any of the above filters, a vapor-generating article according to any of the above vapor-generating articles, and a vapor-generating device configured to receive the vapor-generating article.
Drawings
Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
fig. 1 illustrates an exemplary aerosol-generating article.
Detailed Description
Referring to fig. 1, an exemplary aerosol-generating article 1 in the form of an elongate consumable 1 is shown positioned within an aerosol-generating device 2 for generating an aerosol.
The aerosol-generating article 1 comprises a stem portion 11 and a filter 14.
The shaft 11 includes an aerosol-generating substrate 12 extending over a portion of the length of the shaft 11. The aerosol-generating substrate 12 is arranged at the end of the aerosol-generating article 1 within the heating chamber of the aerosol-generating device 2 and furthest from the opening of the heating chamber. The aerosol-generating substrate 12 is a material that generates an aerosol when heated. The aerosol-generating substrate 12 may comprise, for example, tobacco or nicotine. The aerosol is drawn from the aerosol-generating article 1 by an air flow through the filter 14.
The aerosol-generating device 2 comprises a heating chamber 21 and a heater 22.
The heating chamber 21 is a tubular structure having an interior hollow in which the aerosol-generating article 1 or the rod-shaped portion 11 of the aerosol-generating article 1 may be received. Specifically, the heating chamber includes a sidewall extending between a first end 212 and a second end 213. The first end 212 is open or openable in use to allow insertion of the shaft 11. As shown in fig. 1A, the second end 213 may be open to provide an air inlet for air to flow through the aerosol-generating article. Alternatively, the second end 213 may be closed to increase the heating efficiency of the heating chamber 21.
The heating chamber 21 may be formed of ceramic or metal. For example, the heating chamber 21 may be formed by bending or stamping a metal sheet. The heater 22 may be any heater suitable for transferring heat through the side walls of the heating chamber 21 into the interior hollow of the heating chamber. For example, the heater may be in the form of an electrically driven resistive track. Alternatively, other types of heaters may be used, such as heaters that provide heat through a chemical reaction such as combustion of fuel. The heating chamber may be further surrounded by insulation such as vacuum tubing, insulating fibers, and/or aerogel.
In use, the heater 22 is arranged to heat the heating chamber 21 to a temperature sufficient for the aerosol-generating substrate 12 to release the aerosol without burning the aerosol-generating article 1. In particular, the heater 22 is configured to heat the aerosol-generating substrate 12 to a maximum temperature of between 150 ℃ and 350 ℃, more preferably between 200 ℃ and 350 ℃.
Although the heater 22 is shown in fig. 1A as being external to the heating chamber 21, in some embodiments, the heater 22 may be disposed inside the heating chamber 21.
The aerosol-generating article 1 further comprises an aerosol-cooling region 15. The aerosol-cooling region 15 extends over a portion of the length of the aerosol-generating article 1 and comprises a hollow tubular portion of the aerosol-generating article 1. This hollow tubular portion allows aerosol (generated by heating the aerosol-generating substrate 12) to pass through the aerosol-generating article 1 without leaking through the sides of the hollow tubular portion. The aerosol-cooling region 15 does not overlap with the portion of the aerosol-generating article 1 heated by the heater 22 (which may be referred to as a heating region), so the aerosol is not heated further within the aerosol-cooling region 15.
As mentioned, the aerosol-substrate 15 is arranged at the end of the aerosol-generating article 1 within the heating chamber 21 and furthest from the opening 212. The filter 14 is disposed at the other end closest to the opening 212. The aerosol-cooling region 15 extends along the length of the aerosol-generating article 1 between the aerosol-generating substrate 12 and the filter 14. This ensures that the aerosol generated in use can be cooled before being inhaled by the user.
Additional details of the filter 14 will now be described.
The filter 14 comprises a filter body 114 having a first end 102 in the form of a mouthpiece and a second end 104 opposite to the first end 102 for attachment to the stem portion 11 of the aerosol-generating article 1. The filter 14 further includes a cavity 106 within the filter body 114 between the first and second ends. The cavity 106 allows fluid, including water, to flow from the second end 104 through the filter body 114 to the first end 102. The cavity 106 includes a filter portion 108 that filters fluid as it flows through the filter body 114. In particular, the filter portion 108 removes at least some of the water from the fluid as the fluid flows through the filter body 114. It should be noted that fluid in this context refers to an aerosol or vapor generated by the aerosol-generating article 1.
The filter 14 is typically made of any suitable plastics material and the aerosol-generating article 1 is typically made of paper.
To more efficiently remove water from the vapor as it passes through the filter body 114, the filter portion includes selectively absorbent media that selectively absorbs water from the fluid in preference to other liquids within the fluid. Any suitable selective water absorbing medium may be used, for example, silica, molecular sieves or hydrophilic sponge materials.
In use, when a user draws on the mouthpiece end 102 of the filter and vapor is drawn through the filter 14, the selective water absorbing medium removes water from the vapor to be inhaled, which reduces the humidity of the inhaled vapor. Because water has a relatively high specific heat capacity, vapors with high humidity can be very hot, which can be dangerous and uncomfortable for the user to inhale. Thus, reducing the humidity within the filter helps to reduce the temperature of the inhaled vapor, which provides a safer aerosol-generating article 1 for the user, and improves the overall sensory experience for the user.
The filter 14 is a reusable filter 14 in that it can be detached from one rod-shaped portion 11 of the first aerosol-generating article 1 at the second end 104 and reattached to the other rod-shaped portion 11 of the second aerosol-generating article 1 via the second end 104. In particular, any suitable temporary attachment mechanism may be used to place the filter 14 into or onto the shaft 11. Thus, the filter 14 may be considered releasably attached and capable of use with multiple aerosol-generating articles. In other words, the filter 14 can be said to be semi-disposable.
Thus, when the filter 14 is attached to the shaft 11, the vapor-generating article 1 is formed. In particular, the vapor-generating article 1 comprises a first end and a second end, and the filter 14 is attached to the second end of the vapor-generating article 1. A first end of the vapor-generating article 1 may be used in connection with a vapor-generating device 2. In this case, a vapor generation system is formed, which includes the vapor-generating article 1 and the vapor-generating device 2 that receives the vapor-generating article 1.
It will be appreciated that the aerosol-generating device is an electronic cigarette which may also be referred to as a "heated tobacco device", "heated non-burning tobacco device", "device for vaporising tobacco products" or the like, but is to be construed as a device suitable for achieving these effects. The features disclosed herein are equally applicable to devices designed to vaporize any aerosol-generating medium.
The aerosol-generating substrate 12 may comprise tobacco, for example, in dry or cured form, with additional ingredients in some cases for flavoring or to create a smoother or otherwise more pleasing experience. In some examples, an aerosol-generating substrate 12, such as tobacco, may be treated with a vaporization agent. The vaporization agent may improve vapor generation from the aerosol-generating substrate 12. For example, the vaporizing agent may include a polyol such as glycerol or an ethylene glycol such as propylene glycol. In some cases, the aerosol-generating substrate 12 may be free of tobacco or even nicotine, but may contain naturally or artificially derived ingredients for flavoring, volatilizing, improving smoothness, and/or providing other pleasing effects.
The aerosol-generating substrate 12 may be provided as a solid or paste type material in the form of a shreds, pellets, powder, granules, strips or flakes, alternatively in the form of a combination of these. Likewise, the aerosol-generating substrate 12 may be a liquid or a gel. Indeed, some examples may include both solid and liquid/gel portions. Indeed, some examples may include both solid and liquid/gel portions. In some examples, the substrate 12 may be a solid block, or may be a loose material packaged in a wrapper 13. Preferably, the substrate comprises randomly oriented tobacco filaments containing tobacco powder and aerosol former. Suitable aerosol formers include: polyols such as sorbitol, glycerol, and glycols such as propylene glycol or triethylene glycol; non-polyols such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, esters such as triacetin, triethylene glycol diacetate, triethyl citrate, glycerol or vegetable glycerol. In some embodiments, the aerosol generating agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol.
While the aerosol-generating substrate 12 will typically generate a gas or a suspension of solids and/or liquids in a gas when heated, it should be understood that the terms 'vapor' and 'aerosol' are generally used interchangeably herein and refer generally to a substance generated to generate a suspension of particles or droplets of any size when the aerosol-generating substrate 12 is heated.
As used herein, the term "fluid" should be construed to broadly refer to a non-solid type of material capable of flowing, including but not limited to liquids, pastes, gels, powders, and the like. "fluidized material" is to be construed accordingly as a material that is fluid in nature, or a material that has been modified to appear fluid. Fluidization may include, but is not limited to: powdering, dissolving in a solvent, gelation, thickening, dilution, and the like.
Claims (9)
1. A filter for a vapor-generating article, the filter comprising:
a filter body, the filter body comprising:
a first end arranged as a suction nozzle;
a second end opposite the first end, the second end being arranged for attachment to a vapor-generating article;
a cavity within the filter body between the first and second ends, the cavity configured to allow fluid comprising water to flow from the second end through the filter body to the first end;
wherein the cavity comprises a filter portion arranged to filter the fluid as it flows through the filter body; and is also provided with
Wherein the filter portion is arranged to remove at least some of the water from the fluid as the fluid flows through the filter body.
2. The filter of claim 1, wherein the filter portion comprises a selective filter medium arranged to selectively filter water from the fluid.
3. The filter of claim 2, wherein the selective filter media comprises a water-absorbing media.
4. The filter of claim 3, wherein the water absorbing medium comprises silica.
5. The filter of claim 3, wherein the water absorbing medium comprises a molecular sieve.
6. The filter of claim 3, wherein the water absorbing medium comprises a hydrophilic sponge material.
7. A filter according to any preceding claim, wherein the second end of the filter is releasably attached to the vapour generating article.
8. A vapor-generating article, the vapor-generating article comprising:
a first end arranged for connection with a vapor generating device;
the filter according to any one of claims 1 to 7, wherein the filter is attached to the second end of the vapor-generating article.
9. A vapor generation system, the vapor generation system comprising:
a filter according to any one of claims 1 to 7;
the vapor-generating article of claim 8; and
a vapor-generating device configured to receive the vapor-generating article.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21151303.1 | 2021-01-13 | ||
| EP21151303 | 2021-01-13 | ||
| PCT/EP2022/050406 WO2022152679A1 (en) | 2021-01-13 | 2022-01-11 | Filter for smoking article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116761522A true CN116761522A (en) | 2023-09-15 |
Family
ID=74183045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280009806.XA Pending CN116761522A (en) | 2021-01-13 | 2022-01-11 | Filter for smoking articles |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240065314A1 (en) |
| EP (1) | EP4277480A1 (en) |
| JP (1) | JP2024502581A (en) |
| KR (1) | KR20230132463A (en) |
| CN (1) | CN116761522A (en) |
| WO (1) | WO2022152679A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3347245A (en) * | 1965-12-27 | 1967-10-17 | Edward J Hawkins | Filter cigarette |
| RU2768552C2 (en) * | 2016-12-29 | 2022-03-24 | Филип Моррис Продактс С.А. | Smoking article filter with amorphous magnesium carbonate |
| CN107411169A (en) * | 2017-08-31 | 2017-12-01 | 深圳市余看智能科技有限公司 | One kind heats non-ignitable tobacco filters of burning joss sticks |
-
2022
- 2022-01-11 KR KR1020237023951A patent/KR20230132463A/en unknown
- 2022-01-11 WO PCT/EP2022/050406 patent/WO2022152679A1/en active Application Filing
- 2022-01-11 EP EP22700382.9A patent/EP4277480A1/en active Pending
- 2022-01-11 US US18/271,728 patent/US20240065314A1/en active Pending
- 2022-01-11 JP JP2023540585A patent/JP2024502581A/en active Pending
- 2022-01-11 CN CN202280009806.XA patent/CN116761522A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20230132463A (en) | 2023-09-15 |
| WO2022152679A1 (en) | 2022-07-21 |
| EP4277480A1 (en) | 2023-11-22 |
| US20240065314A1 (en) | 2024-02-29 |
| JP2024502581A (en) | 2024-01-22 |
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