Note: Descriptions are shown in the official language in which they were submitted.
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Description
Title of Invention: AEROSOL-GENERATING ARTICLE AND
AEROSOL-GENERATING DEVICE HAVING SAME
Technical Field
[1] The present disclosure relates to an aerosol-generating article and an
aerosol-
generating device.
Background Art
[2] In general, tobacco refers to a perennial herbaceous plant belonging to
the
Solanaceae, a family of dicotyledonous plants, and recently, also collectively
refers to
a product manufactured for the purpose of smoking and consisting of tobacco
leaves in
cigarette paper with a filter at one side. There are thousands of tobacco
products in the
worldwide market, and they come in a variety of shapes and forms.
[31 In the case of combustible tobacco products such as
cigarettes, cigars, and hookah,
tobacco smoke contains many components such as tar, nitroamines, hydrocarbons,
and
carbon monoxide, in addition to aerosols containing nicotine.
[4] As an alternative to compensating for the shortcomings of such
combustible tobacco
products, a method of generating an aerosol by heating an aerosol-generating
material
in a cigarette rather than burning the cigarette, is widely used, and demand
therefor is
increasing. To meet this demand, research is actively being conducted on
heating-type
cigarettes or heating-type aerosol-generating devices.
[5] Specifically, an aerosol-generating device has a form similar to that
of a conventional
combustible tobacco product, and generates mainstream smoke including aerosols
by
heating an aerosol-generating material in a heating-type cigarette through a
means such
as a heater or ultrasonic vibration. The aerosol-generating device has the
advantage of
minimizing emission of components such as tar while functioning to provide
smokers
with smoking satisfaction. Accordingly, is the aerosol-generating device has
been at-
tracting attention as a new market for replacing conventional combustible
tobacco
products.
[6] However, the heating-type cigarette heated by the aerosol-generating
device
generates high-temperature mainstream smoke therein, and this high-temperature
aerosol may be delivered directly to a user. The high-temperature mainstream
smoke
may cause discomfort or burns to the user.
Disclosure of Invention
Technical Problem
[71 Accordingly, the present disclosure has been made keeping in
mind the above
problems occurring in the related art, and an objective of the present
disclosure is to
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provide an aerosol-generating article capable of preventing a user from
feeling
discomfort or getting burned.
[81 Another objective of the present disclosure is to provide an
aerosol-generating article
capable of cooling high-temperature mainstream smoke without reducing the
amount
of atomization.
Solution to Problem
[91 According to one aspect of the present disclosure, there is
provided an aerosol-
generating article including a tobacco medium portion, a filter portion
disposed to be
spaced apart from the tobacco medium portion, and a tubular cooling portion
disposed
between the tobacco medium portion and the filter portion. A cooling material
may be
included in a body constituting the cooling portion.
Advantageous Effects of Invention
[10] As described above, an aerosol-generating article according to one
aspect of the
present disclosure can prevent a user from feeling discomfort or getting
burned by
high-temperature mainstream smoke.
[11] In addition, it is possible to effectively cool the high-temperature
mainstream smoke
without reducing the amount of atomization.
Brief Description of Drawings
[12] So that the present disclosure can be understood by those of ordinary
skill in the art,
a more detailed description may be had by reference to aspects of some
illustrative im-
plementations, some of which are shown in the accompanying drawings.
[13] FIG. 1 is a schematic exploded perspective view illustrating an
aerosol-generating
article according an embodiment of the present disclosure.
[14] FIG. 2 is a schematic perspective view illustrating the aerosol-
generating article
according to the embodiment of the present disclosure.
[15] FIG. 3 is an enlarged view of the inside of section A illustrated in
FIG. 2.
[16] FIG. 4 is a sectional view illustrating the aerosol-generating article
according to the
embodiment of the present disclosure.
[17] FIGS. 5 to 7 are views illustrating modified examples of a tobacco
medium portion
of the aerosol-generating article according to the embodiment of the present
disclosure.
[18] FIG. 8 is a view illustrating a modified example of a filter portion
of the aerosol-
generating article according to the embodiment of the present disclosure.
[19] FIG. 9 is a view schematically illustrating a process of cooling
mainstream smoke by
a cooling material of a cooling portion.
[20] FIG. 10 is a schematic sectional view illustrating an aerosol-
generating article
according to the related art in which activated carbon is disposed upstream of
a filter
portion.
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[21] FIGS. 11 to 18 are views illustrating modified examples of the cooling
portion of the
aerosol-generating article according to the embodiment of the present
disclosure.
[22] FIG. 19 is a schematic view illustrating the configuration of an
aerosol-generating
device into which the aerosol-generating article according to the embodiment
of the
present disclosure is inserted.
[23] In accordance with common practice, the various features illustrated
in the drawings
may not be drawn to scale. Accordingly, the dimensions of the various features
may be
arbitrarily expanded or reduced for clarity. In addition, some of the drawings
may not
depict all of the components of a given system, method, or device. Finally,
like
reference numerals may be used to denote like features throughout the
specification
and figures.
Best Mode for Carrying out the Invention
[24] In some implementations, an aerosol-generating article according to
one aspect of the
present disclosure may include a tobacco medium portion, a filter portion
disposed to
be spaced apart from the tobacco medium portion, and a tubular cooling portion
disposed between the tobacco medium portion and the filter portion. A cooling
material may be included in a body constituting the cooling portion.
[25] In some implementations, the cooling material may include activated
carbon.
[26] In some implementations, the activated carbon may have a particle size
in the range
of 20 to 100 mesh.
[27] In some implementations, the activated carbon may have a specific
surface area in
the range of 600 to 3,000 m2/g.
[28] In some implementations, the cooling material may be uniformly
disposed in the
cooling portion along a longitudinal direction of the cooling portion.
[29] In some implementations, the cooling material may be non-uniformly
disposed in the
cooling portion along the longitudinal direction of the cooling portion.
[30] In some implementations, the concentration of the cooling material in
the cooling
portion may be higher at an inlet side of the cooling portion adjacent to the
tobacco
medium portion than at an outlet side of the cooling portion adjacent to the
filter
portion.
[31] In some implementations, the concentration of the cooling material in
the cooling
portion may be lower at the inlet side of the cooling portion adjacent to the
tobacco
medium portion than at the outlet side of the cooling portion adjacent to the
filter
portion.
[32] In some implementations, the concentration of the cooling material may
be higher in
a central region of the cooling portion than in opposite end regions of the
cooling
portion.
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[33] In some implementations, the concentration of the cooling material may
be lower in
the central region of the cooling portion than in the opposite end regions of
the cooling
portion.
[34] In some implementations, the cooling portion may include a cellulose
acetate tow.
[35] In some implementations, the tobacco medium portion may include a
plurality of
segments.
[36] In some implementations, at least one of the plurality of segments may
include a
tobacco medium.
[37] In some implementations, an aerosol-generating device according to
another aspect
of the present disclosure may include a heater for heating at least a portion
of an
aerosol-generating article, a power supplier for supplying power to the
heater, and a
controller for controlling the power supplied to the power supplier.
[38] In some implementations, the aerosol-generating device may further
include an
aerosol generator for generating an aerosol by heating a liquid composition.
The
aerosol generated by the aerosol generator may be introduced into the aerosol-
generating article.
[39] The present disclosure is not limited to what has been described
above, and other
aspects and advantages of the present disclosure not mentioned above will be
un-
derstood through the following description of implementations of the present
disclosure. Further, it will be understood that the aspects and advantages of
the present
disclosure may be achieved by the configurations described in claims and com-
binations thereof.
Mode for the Invention
[40] Reference will now be made in detail to various embodiments of the
present
disclosure, specific examples of which are illustrated in the accompanying
drawings
and described below, since the embodiments of the present disclosure can be
variously
modified in many different forms. However, the present disclosure should not
be
construed as being limited to only the embodiments set forth herein, but
should be
construed as covering modifications, equivalents, or alternatives falling
within the
spirit and scope of the present disclosure.
[41] The terminology used herein is for the purpose of describing
particular embodiments
only and is not intended to be limiting. As used herein, the singular forms
are intended
to include the plural forms as well, unless the context clearly indicates
otherwise. It
will be further understood that the terms "comprise", "include", "have", etc.
when used
in this specification, specify the presence of stated features, integers,
steps, operations,
elements, components, and/or combinations thereof but do not preclude the
presence or
addition of one or more other features, integers, steps, operations, elements,
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components, and/or combinations thereof.
[42] Hereinafter, exemplary embodiments of the present disclosure will be
described in
detail with reference to the accompanying drawings. Throughout the drawings,
the
same reference numerals will refer to the same or like elements or parts.
Further, it is
to be noted that, when the functions of conventional elements and the detailed
de-
scription of elements related with the present disclosure may make the gist of
the
present disclosure unclear, a detailed description of those elements will be
omitted. For
the same reason, some components will be exaggerated, omitted, or
schematically il-
lustrated in the accompanying drawings.
[43] Hereinafter, an aerosol-generating article according to an embodiment
of the present
disclosure will be described.
[44] FIG. 1 is a schematic exploded perspective view illustrating the
aerosol-generating
article according to the embodiment of the present disclosure. FIG. 2 is a
schematic
perspective view illustrating the aerosol-generating article according to the
em-
bodiment of the present disclosure. FIG. 3 is an enlarged view of the inside
of section
A illustrated in FIG. 2. FIG. 4 is a sectional view illustrating the aerosol-
generating
article according to the embodiment of the present disclosure.
[45] Referring to FIGS. 1 to 4, the aerosol-generating article 100
according to the em-
bodiment of the present disclosure may include a tobacco medium portion 110, a
cooling portion 130, a filter portion 150, and a wrapper 170. Here, it will be
un-
derstood by those of ordinary skill in the art related to the present
embodiment that
other general-purpose components other than those illustrated in FIGS. 1 to 4
may be
further included in the aerosol-generating article 100.
[46] The aerosol-generating article 100 according to the present embodiment
may be
heated by being inserted into an aerosol-generating device 300 (see FIG. 19),
which
will be described in further detail below. In this case, when the aerosol-
generating
article 100 is heated, mainstream smoke may be delivered to a user. The
mainstream
smoke may be an airflow flowing from upstream to downstream inside the aerosol-
generating article 100. Here, the term "upstream" may mean the side in which
the
tobacco medium portion 110 is located, and the term "downstream" may mean the
side
in which the filter portion 150 is located. The user of the aerosol-generating
article 100
may inhale the mainstream smoke through a downstream end of the aerosol-
generating
article 100.
[47] The aerosol-generating article 100 may have a cylindrical shape. In
this case, the
diameter of the aerosol-generating article 100 may be in the range of 4.7 mm
to 9.9
mm. Each of the tobacco medium portion 110, the cooling portion 130, and the
filter
portion 150 may also have a cylindrical shape having a diameter of 4.7 mm to
9.9 mm.
[48] In addition, the length of the aerosol-generating article 100 may be
in the range of 31
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mm and 60 mm. The length of the tobacco medium portion 110 may be in the range
of
17 mm to 30 mm. The length of the cooling portion 130 may be in the range of 4
mm
to 10 mm, and the length of the filter portion 150 may be in the range of 10
mm to 20
mm.
[49] The shapes, diameters, and lengths of the aerosol-generating article
100 and the
components thereof are exemplary, and the present disclosure is not
necessarily limited
thereto. The shape and dimensions of the aerosol-generating article 100 may be
partially modified within a range that can be employed by those skilled in the
art.
[50] The tobacco medium portion 110 is located on the upstream side of the
aerosol-
generating article 100 and may include a tobacco medium that generates an
aerosol.
The tobacco medium of the tobacco medium portion 110 contains nicotine,
providing
the user who inhales the mainstream smoke with a cigarette's distinctive taste
and
flavor.
[51] When the aerosol-generating article 100 is heated by the aerosol-
generating device
300, which will be described in more detail below, and an aerosol generated by
the
aerosol-generating device 300 is introduced into the aerosol-generating
article 100,
nicotine may be adsorbed to the surface of the thus introduced aerosol while
the
aerosol passes through the tobacco medium portion 110 and be delivered to the
user.
[521 Here, the nicotine contained in the tobacco medium may be at
least one of free base
nicotine and a nicotine salt, and the nicotine may be naturally-occurring
nicotine or
synthetic nicotine.
[53] The nicotine salt may be formed by adding a suitable acid, including
an organic or
inorganic acid, to nicotine. The acid for the formation of the nicotine salt
may be ap-
propriately selected in consideration of the blood nicotine absorption rate,
the heating
temperature of a heater, flavor, solubility, etc. For example, the acid for
the formation
of the nicotine salt may be one of or a mixture of at least two selected from
the group
consisting of benzoic acid, lactic acid, salicylic acid, lauric acid, sorbic
acid, levulinic
acid, pyruvic acid, formic acid, acetic acid, propionic acid, butyric acid,
valeric acid,
caproic acid, caprylic acid, capric acid, citric acid, myristic acid, palmitic
acid, stearic
acid, oleic acid, linoleic acid, linolenic acid, phenylacetic acid, tartaric
acid, succinic
acid, fumaric acid, gluconic acid, saccharic acid, malonic acid, or malic
acid, but is not
necessarily limited thereto.
[54] Meanwhile, the tobacco medium of the tobacco medium portion 110 may be
made in
various forms. For example, the tobacco medium may be made in the form of a
sheet
or strand. In addition, the tobacco medium may be made in the form of tobacco
shreds
obtained by finely cutting a tobacco sheet. In addition, the tobacco medium
may be
made in the form of granules including tobacco.
[55] The tobacco medium portion 110 may have a cylindrical shape. However,
the shape
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of the tobacco medium portion 110 is not necessarily limited thereto, and a
bar shape
with various cross-sections may be employed.
[56] In this case, the tobacco medium portion 110 may be manufactured by
folding a
tobacco sheet into a cylindrical shape, or by molding tobacco strands, tobacco
shreds,
or tobacco granules into a cylindrical shape.
[57] When the tobacco medium portion 110 is made of a plurality of tobacco
strands
obtained by finely cutting a tobacco sheet, the tobacco medium portion 110 may
be
formed by combining the plurality of tobacco strands in the same direction
(e.g.,
parallel to one another) or randomly. In detail, the tobacco medium portion
110 may be
formed by combining the plurality of tobacco strands, and a plurality of
longitudinal
channels for allowing the aerosol to pass therethrough may result. In this
case,
depending on the sizes and arrangements of the tobacco strands, the
longitudinal
channels may be uniform or non-uniform.
[58] The tobacco medium portion 110 may further include an aerosol-
generating material
to increase the amount of atomization. For example, the aerosol-generating
material
may include at least one of glycerin, propylene glycol, ethylene glycol,
dipropylene
glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl
alcohol,
but is not necessarily limited thereto.
1591 The tobacco medium portion 110 may further include a
flavoring material to add a
flavor to the aerosol. For example, the tobacco medium portion 110 may include
other
additives such as a flavoring agent, a wetting agent, and/or an organic acid.
In addition,
a flavoring liquid such as menthol or moisturizer may be added to the tobacco
medium
portion 110 by spraying the flavoring liquid onto the tobacco medium portion
110.
[60] In this case, as a non-limiting example, the flavoring agent may
include licorice,
sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom,
celery,
fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose
oil,
vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine,
chamomile, menthol, cinnamon, ylang, salvia, spearmint, ginger, coriander, or
coffee.
In addition, the wetting agent may include glycerin or propylene glycol.
[61] The tobacco medium portion 110 may be surrounded by a heat-conducting
material.
The heat-conducting material may improve thermal conductivity applied to the
tobacco
medium portion 110 by evenly distributing heat transferred to the tobacco
medium
portion 110 for improving tobacco flavor. For example, the heat-conducting
material
may be a metal foil such as an aluminum foil. However, the heat-conducting
material
is not necessarily limited thereto, and various metal foils for use as the
heat-conducting
material may be employed.
[62] Meanwhile, in the present embodiment, the tobacco medium portion 110
may be
composed of at least one segment. As a non-limiting example, the tobacco
medium
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portion 110 may include one segment, two segments, or three segments.
Specifically,
the tobacco medium portion 110 according to the present embodiment illustrated
in
FIG. 4 may include one segment. Alternatively, as illustrated in FIGS. 5 and
6, the
tobacco medium portion 110 may include two segments. Alternatively, as
illustrated in
FIG. 7, the tobacco medium portion 110 may include three segments.
[63] Referring to FIG. 4, the tobacco medium portion 110 according to the
present em-
bodiment may include one segment. The segment of tobacco medium portion 110
may
be filled with a tobacco medium. In other words, in the present embodiment,
the
tobacco medium portion 110 may include one segment filled with the tobacco
medium.
[64] In this case, the segment may be manufactured by folding a tobacco
sheet into a
cylindrical shape, or by molding tobacco strands, tobacco shreds, or tobacco
granules
into a cylindrical shape. In addition, the segment may further include an
aerosol-
generating material to increase the amount of atomization and/or a flavoring
material.
[65] In addition, the segment of the tobacco medium portion 110 may be
heated by being
coupled to a heater 370 (see FIG. 19) of the aerosol-generating device 300 for
heating
the aerosol-generating article 100. In FIG. 19, the heater 370 is illustrated
as being
disposed around the aerosol-generating article 100, but is not necessarily
limited
thereto, and may be inserted into the tobacco medium portion 110 to heat the
tobacco
medium portion 110.
[66] The tobacco medium portion 110 may further include a configuration for
identifying
the aerosol-generating article 100. The aerosol-generating article 100 may
exhibit
various tastes and flavors, and may include a configuration (not illustrated)
for
identifying various types of aerosol-generating article 100. For example, the
tobacco
medium portion 110 may include a metal foil for altering the inductance of a
coil for
recognizing an aerosol-generating article included in the aerosol-generating
device
300. In this case, the metal foil may be disposed on an outer peripheral
surface of the
tobacco medium portion 110.
[67] Meanwhile, in modified examples illustrated in FIGS. 5 and 6, the
tobacco medium
portion 110 may include two segments. One of the two segments may include a
tobacco medium and the other may not include a tobacco medium.
[68] Referring to FIG. 5, the tobacco medium portion 110 may include a
first segment 111
and a second segment 119. The first segment 111 is a segment that is filled
with the
tobacco medium and may be made of the same material as the above-described
segment of the tobacco medium portion 110 illustrated in FIG. 4.
[69] The second segment 119 may be located at an upstream end of the
aerosol-generating
article 100 and may prevent the first segment 111 from being externally
separated. In
other words, the tobacco medium portion 110 according to the present modified
example may be configured such that the second segment 119 and the first
segment
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111 are arranged sequentially from the upstream side.
[70] The second segment 119 may prevent impurities from being introduced
into the first
segment 111 from the outside, and may prevent a liquefied aerosol from being
in-
troduced into the aerosol-generating device 300 (see FIG. 19) during smoking.
[71] In addition, when the aerosol-generating article 100 is inserted into
the aerosol-
generating device 300, the second segment 119 may support the aerosol-
generating
article 100 so that the aerosol-generating article 100 is secured to the
aerosol-
generating device 300.
[72] The second segment 119 may be a cellulose acetate filter. For example,
the second
segment 119 may be manufactured by adding a plasticizer such as triacetin to a
cellulose acetate tow. In addition, an aerosol-generating material may be
included in
the cellulose acetate tow.
[73] Nicotine may be excluded from the aerosol-generating material included
in the
second segment 119. For example, the second segment 119 may include at least
one of
glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene
glycol, tri-
ethylene glycol, tetraethylene glycol, or oleyl alcohol. However, the aerosol-
generating
material included in the second segment 119 is not necessarily limited
thereto. For
example, the second segment 119 may include a material in which glycerin and
propylene glycol are mixed in a ratio of approximately 8:2. However, the above-
mentioned mixing ratio is exemplary, and the present disclosure is not
necessarily
limited thereto.
[74] In addition, the second segment 119 may include other additives such
as a flavoring
agent, a wetting agent, and/or an organic acid. However, the material and type
of the
second segment 119 are not necessarily limited thereto, and may be modified
within a
range that can be employed by those skilled in the art.
[75] The second segment 119 may have a through-hole for allowing an aerosol
from the
outside to be introduced therethrough to form mainstream smoke inside the
aerosol-
generating article 100. The through-hole formed in the second segment 119 may
have a
circular or Y-shaped cross-section. However, the cross-sectional shape of the
through-
hole is not necessarily limited thereto, and various forms may be employed.
[76] Meanwhile, when the second segment 119 includes a crimped sheet
impregnated
with the aerosol-generating material, the through-hole may not be formed in
the second
segment 119.
[77] When a portion of the aerosol-generating article 100 is inserted into
the aerosol-
generating device 300, an aerosol generated by the aerosol-generating device
300 may
be introduced into the aerosol-generating article 100 through the second
segment 119.
The aerosol may form mainstream smoke inside the aerosol-generating article
100 and
be delivered to the user. In addition, an aerosol generated inside the second
segment
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119 including the aerosol-generating material may form mainstream smoke and be
delivered to the user.
[78] The second segment 119 may further include a configuration
for identifying the
aerosol-generating article 100. The aerosol-generating article 100 may exhibit
various
tastes and flavors, and may include a configuration for identifying various
types of
aerosol-generating article 100. For example, the second segment 119 may
include a
metal foil for altering the inductance of a coil for recognizing an aerosol-
generating
article included in the aerosol-generating device 300. However, the present
disclosure
is not necessarily limited thereto, and the configuration for identifying the
aerosol-
generating article 100 may be included in the first segment 111 in addition to
the
second segment 119.
1791 Referring to FIG. 6, the tobacco medium portion 110 may
include a first segment 111
and a second segment 117.
[80] The first segment 111 may be located at the upstream end of the
aerosol-generating
article. The first segment 111 is a segment that is filled with a tobacco
medium and
may be made of the same material as the above-described first segment 111
illustrated
in FIG. 5.
[81] The second segment 117 may prevent the tobacco medium of the first
segment 111
from being separated toward the cooling portion 130, which will be described
in more
detail below. For example, when the heater for heating the aerosol-generating
article
100 is inserted into the first segment 111, the tobacco medium in the first
segment 111
may be separated and moved toward the cooling portion 130. As the second
segment
117 is disposed between the first segment 111 and the cooling portion 130, the
tobacco
medium in the first segment 111 may be prevented from being separated toward
the
cooling portion 130.
[82] The second segment 117 may be made of the same material as the above-
described
second segment 119 illustrated in FIG. 5.
[83] In addition, the second segment 117 may have a through-hole for
allowing an aerosol
formed in the first segment 111 or passing through the first segment 111 to be
in-
troduced therethrough. The through-hole formed in the second segment 117 may
have
a circular or Y-shaped cross-section. However, the cross-sectional shape of
the
through-hole is not necessarily limited thereto, and various forms may be
employed.
[84] As such, the first segment 111 and the second segment 117 of the
tobacco medium
portion 110 may be respectively made of the same materials as the above-
described
first segment 111 and second segment 119 of the tobacco medium portion 110 il-
lustrated in FIG. 5. However, the first segment 111 and the second segment 117
of the
tobacco medium portion 110 may be arranged in a different order from the first
segment 111 and the second segment 119 illustrated in FIG. 5. In other words,
the
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tobacco medium portion 110 according to the present modified example may be
configured such that the first segment 111 and the second segment 117 are
arranged se-
quentially from the upstream side.
[85] Meanwhile, in a modified example illustrated in FIG. 7, the tobacco
medium portion
110 may include three segments. At least one of the three segments may include
a
tobacco medium.
[86] Referring to FIG. 7, the tobacco medium portion 110 may include a
first segment
111, a second segment 113, and a third segment 115. In the present modified
example,
the first segment 111 including the tobacco medium may be centrally disposed,
and the
second segment 113, the first segment 111, and the third segment 115 may be
arranged
sequentially from the upstream side.
[871 The first segment 111 is an intermediate segment among the three
segments of the
tobacco medium portion 110. The first segment 111 is a segment that is filled
with the
tobacco medium and may be made of the same material as the above-described
first
segment 111 as illustrated in FIG. 5.
[88] The second segment 113 and the third segment 115 may be disposed
oppositely with
respect to the first segment 111 interposed therebetween. The second segment
113 and
the third segment 115 may be made of the same material as the above-described
second segment 119 as illustrated in FIG. 5.
[89] The second segment 113 may prevent impurities from being introduced
into the first
segment 111 from the outside, and may prevent a liquefied aerosol from being
in-
troduced into the aerosol-generating device 300 during smoking. In addition,
the
second segment 113 may remain the same in structure, function, and material as
the
above-described second segment 119 illustrated in FIG. 5.
[90] The third segment 115 may prevent the tobacco medium of the first
segment 111
from being separated toward the cooling portion 130. In addition, the third
segment
115 may remain the same in structure, function, and material as the above-
described
second segment 117 illustrated in FIG. 6.
[91] As such, in the present modified example, the tobacco medium portion
110 may be
configured such that the second segment 113 and the third segment 115 are
disposed
oppositely with respect to the first segment 111 including the tobacco medium.
[92] Referring back to FIGS. 1 to 4, in the present embodiment, the filter
portion 150 may
be located at the downstream end of the aerosol-generating article to be
spaced apart
from the tobacco medium portion 110. The filter portion 150 may filter out at
least one
of substances included in the mainstream smoke.
[93] The filter portion 150 may be a cellulose acetate filter, and may be
manufactured by
adding a plasticizer such as triacetin to a cellulose acetate tow. However,
the material
and type of the filter portion 150 are not necessarily limited thereto, and
may be
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modified within a range that can be employed by those skilled in the art.
[94] The filter portion 150 may have a cylindrical shape. However, the
shape of the filter
portion 150 is not necessarily limited thereto, and various shapes conforming
to the
shape of the tobacco medium portion 110 may be employed.
[95] The filter portion 150 may be manufactured to generate a flavor. For
example, a
flavoring liquid may be sprayed onto the filter portion 150, or separate
fibers coated
with a flavoring liquid may be included inside the filter portion 150.
[96] Alternatively, the filter portion 150 may include at least one capsule
(not illustrated).
The capsule may generate a flavor or an aerosol. For example, the capsule may
have a
structure in which a liquid containing a spice is encapsulated with a film. In
this case,
the capsule may have a spherical or cylindrical shape, but the shape of the
capsule is
not necessarily limited thereto.
[97] In the present embodiment, the filter portion 150 is described as
being formed on the
most downstream side of the aerosol-generating article 100. However, as
illustrated in
FIG. 8, a recess portion 190 may be formed downstream of the filter portion
150. The
recess portion 190 has a structure in which the wrapper 170 surrounding the
filter
portion 150 further extends downstream beyond the filter portion 150. In other
words,
in the present embodiment, the wrapper 170 extends outwardly beyond the filter
portion 150 more than in the above-described aerosol-generating article 100
according
to the embodiment. With the shape of the wrapper 170, the filter portion 150
may have
a recessed rod shape.
[98] The recess portion 190 may prevent nicotine stains formed at the end
of the filter
portion 150 from being easily exposed externally. Thus, nicotine stains formed
on the
filter portion 150 of the aerosol-generating article 100 during smoking or
after smoking
may not be exposed externally, resulting in an improved aesthetic appearance.
[99] Referring to FIGS. 3 and 4, in the aerosol-generating article 100
according to the
present embodiment, the cooling portion 130 may be disposed between the
tobacco
medium portion 110 and the filter portion 150 and may cool a high-temperature
aerosol passing therethrough. The high-temperature aerosol from the tobacco
medium
portion 110 may be cooled while moving inside the cooling portion 130, and the
cooled aerosol may pass through the filter portion 150 and be delivered to the
user.
Thereby, the high-temperature aerosol may be prevented from being delivered
directly
to the user.
[100] The cooling portion 130 may have a tubular shape for allowing an
aerosol to pass
therethrough. Specifically, the cooling portion 130 may include a body 135
having a
through-hole 133 therein. The through-hole 133 is a space formed in the center
of the
cooling portion 130 and may allow the aerosol to move from the tobacco medium
portion 110 to the filter portion 150 therethrough.
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[101] The high-temperature aerosol introduced into an inlet of the cooling
portion 130 may
be cooled while passing through the through-hole 133 of the cooling portion
130.
During the process of cooling the aerosol, a portion of heat contained in the
aerosol
may pass through the body 135 of the cooling portion 130 and be discharged to
the
outside. In this case, a separate member including polylactic acid (PLA) may
be
disposed in the through-hole 133 of the cooling portion 130. For example, the
inside of
the through-hole 133 may be at least partially filled with PLA.
[102] The body 135 of the cooling portion 130 may be manufactured by adding
a
plasticizer such as triacetin to a cellulose acetate tow. Alternatively, the
body 135 of
the cooling portion 130 may be made of laminated paper composed of a plurality
of
paper layers. For example, the body 135 may be made of laminated paper
composed of
an outer paper layer, an intermediate paper layer, and an inner paper layer,
but is not
necessarily limited thereto, and may be made of single-layer paper. In this
case, the
inside of the laminated paper may be coated with a cooling material or may be
attached
with a cooling film. Here, the cooling material or the cooling film may
include various
materials having high thermal efficiency. However, the material and type of
the body
135 of the cooling portion 130 are not limited thereto, and may be modified
within a
range that can be employed by those skilled in the art.
[103] When the body 135 of the cooling portion 130 is made of the cellulose
acetate tow,
the mono denier of filaments constituting the cellulose acetate tow may be in
the range
of 3 to 20. Preferably, the mono denier of the filaments of the body 135 is in
the range
of 9 to 15.
[104] In addition, the filaments constituting the body 135 may have a Y-
shaped cross-
section. Here, the term "filament" may mean a long strand of fibers
constituting the
cellulose acetate tow.
[105] The body 135 may have a donut-shaped cross-section due to the through-
hole 133. In
this case, the inner diameter of the body 135 may be equal to or larger than 2
mm. In
some embodiments, the inner diameter of the body 135 is in the range of 3.8 mm
to 4.2
mm.
[106] Here, the body 135 may have a plurality of openings 160 for allowing
external air to
be introduced therethrough or internal air to be discharged therethrough. The
plurality
of openings 160 may be formed to be spaced apart from each other in a
circumferential
direction of the body 135.
[107] In the present embodiment, the plurality of openings 160 may be
arranged at an
outlet side (i.e., the side adjacent to the filter portion 150) of the cooling
portion 130.
The aerosol passing through the cooling portion 130 may be further cooled by
the
external air introduced through the plurality of openings 160. Thereby, the
aerosol to
be introduced into the filter portion 150 may be cooled again so that the high-
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temperature aerosol may be prevented from being inhaled directly into a user's
mouth.
[1081 In the present embodiment, although it is described that the
plurality of openings 160
are arranged at the outlet side of the cooling portion 130, the position of
the plurality of
openings 160 is not necessarily limited thereto. The plurality of openings 160
may be
arranged at another position on the cooling portion 130, for example, at an
inlet side of
the cooling portion 130 or in a central region of the cooling portion 130.
[109] According to the present embodiment, a cooling material 131 may be
included in the
body 135 of the cooling portion 130. The cooling material 131 may further cool
mainstream smoke M passing through the through-hole 133 of the body 135. In
more
detail, the cooling material 131 may cool the mainstream smoke M by absorbing
a
portion of the aerosol contained in the mainstream smoke M passing through the
through-hole 133 formed in the body 135.
[110] In this case, the cooling material 131 may include activated carbon.
Activated carbon
may be produced by processing wood, bamboo, sawdust, coconut husk, lignin,
lignite,
peat, etc. through carbonization, activation, and refining. Activated carbon
may be
divided into powdered activated carbon and granular activated carbon depending
on
shape. In the present embodiment, the activated carbon used as the cooling
material
131 may be powdered activated carbon or granular activated carbon.
[1111 The activated carbon may have a specific surface area
capable of absorbing the
aerosol contained in the mainstream smoke M. The specific surface area of the
activated carbon may be in the range of 600 to 3,000 m2/g. In some
embodiments, the
specific surface area of the activated carbon may be in the range of 700 to
2,500 m2/g.
In some embodiments, the specific surface area of the activated carbon may be
in the
range of 1,000 to 2,000 m2/g. However, the specific surface area of the
activated
carbon is not necessarily limited to the above range, and the activated carbon
may have
any specific surface area capable of absorbing the aerosol in the mainstream
smoke.
[112] In addition, the activated carbon may have a particle size that can
be located in the
fibers constituting the body 135. The particle size of the activated carbon
may be in the
range of 20 to 100 mesh. Preferably, the particle size of the activated carbon
is in the
range of 25 to 80 mesh. The particle size of the activated carbon may be
appropriately
selected within the above range depending on the fibers constituting the body
135.
[113] FIG. 9 is a view schematically illustrating a process of cooling the
mainstream smoke
by the cooling material of the cooling portion.
[114] Referring to FIG. 9, the mainstream smoke M passing through the
tobacco medium
portion 110 may pass through the through-hole 133 formed in the cooling
portion 130.
At this time, the cooling material 131 absorbs a portion of the aerosol
contained in the
mainstream smoke M. As the aerosol is absorbed by the cooling material 131,
heat H is
released and the mainstream smoke M is cooled thereby. Therefore, in addition
to the
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case where the mainstream smoke M is subjected to natural cooling while
passing
through the through-hole 133 of the body 135, further cooling occurs in the
process in
which the cooling material 131 of the body 135 absorbs a portion of the
aerosol in the
mainstream smoke M.
[115] According to the present embodiment, the mainstream smoke M delivered
to the user
by the cooling material 131 of the cooling portion 130 may be cooled to a
temperature
in the range of 55 C to 65 C. In the case of an aerosol-generating article
according to
the related art in which the cooling material 131 is not included in a cooling
portion
130, the temperature of mainstream smoke M delivered to the user may exceed 70
C
depending on environment of use. Due to such a high temperature, the user may
feel
uncomfortable while smoking, or a user's lips may get burned in a high-
temperature
and high-humidity environment. As in the present embodiment, when the cooling
material 131 is included in the body 135 of the cooling portion 130, the
temperature of
the mainstream smoke M delivered to the user may be maintained within the
above
temperature range, thereby preventing the user from feeling uncomfortable or
getting
burned,
[116] Meanwhile, FIG. 10 is a schematic sectional view of the aerosol-
generating article
according to other embodiments in which an activated carbon portion 150
including
activated carbon is disposed between the cooling portion 130 and a filter
portion 150.
The mainstream smoke M passing through the cooling portion 130 is cooled by
the
activated carbon portion 180. However, as the activated carbon portion 180 is
located
in the direction in which the mainstream smoke moves, it may not only further
cool the
mainstream smoke but also greatly reduce the amount of atomization. Compared
to the
aerosol-generating article according to the present embodiment, the aerosol-
generating
article 100 according to the present embodiment may further cool the
mainstream
smoke without reducing the amount of atomization.
[117] According to the present embodiment, the cooling material 131 may be
uniformly
disposed in the cooling portion 130. In more detail, the cooling material 131
(i.e.,
activated carbon) may be disposed at a uniform concentration along a
longitudinal
direction of the body 135 of the cooling portion 130. In other words, the
concentration
of the cooling material 131 in the cooling portion 130 may be uniform from the
tobacco medium portion 110 to the filter portion 150. Here, the concentration
of the
cooling material 131 represents the amount of the cooling material 131 (i.e.,
activated
carbon) per unit length contained in the body 135.
[118] Meanwhile, the cooling material 131 may be non-uniformly disposed in
the cooling
portion 130. More specifically, as in modified examples according to the
present em-
bodiment illustrated in FIGS. 11 to 18, the cooling material 131 may be
disposed at a
non-uniform concentration along the longitudinal direction of the body 135 of
the
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cooling portion 130.
[119] Referring to FIGS. 11 and 12, the cooling material 131 in the cooling
portion 130
may be disposed so that the concentration thereof is higher at the inlet side
of the
cooling portion 130 adjacent to the tobacco medium portion 110 than at
remaining
positions on the cooling portion 130.
[120] In FIG. 11, the cooling material 131 may be disposed throughout the
body 135 along
the longitudinal direction of the body 135, and the concentration of the
cooling
material 131 may be relatively high at the inlet side of the cooling portion
130. On the
other hand, in FIG. 12, the cooling material 131 may be disposed only at the
inlet side
of the cooling portion 130, and the cooling material 131 may not be disposed
at the
remaining positions on the cooling portion 130 except for the inlet side.
[121] Referring to FIGS. 13 and 14, the cooling material 131 in the cooling
portion 130
may be disposed so that the concentration thereof is higher at the outlet side
of the
cooling portion 130 adjacent to the filter portion 150 than at remaining
positions on the
cooling portion 130.
[122] In FIG. 13, the cooling material 131 may be disposed throughout the
body 135 along
the longitudinal direction of the body 135, and the concentration of the
cooling
material 131 may be relatively high at the outlet side of the cooling portion
130. On the
other hand, in FIG. 14, the cooling material 131 may be disposed only at the
outlet side
of the cooling portion 130, and the cooling material 131 may not be disposed
at the
remaining positions on the cooling portion 130 except for the outlet side.
[123] Referring to FIGS. 15 and 16, the cooling material 131 in the cooling
portion 130
may be disposed so that the concentration thereof is higher in a central
region of the
cooling portion 130 than at remaining positions on the cooling portion 130. In
other
words, the concentration of the cooling material 131 may be higher in the
central
region of the cooling portion 130 than in opposite end regions of the cooling
portion
130.
[124] In FIG. 15, the cooling material 131 may be disposed throughout the
body 135 along
the longitudinal direction of the body 135, and the concentration of the
cooling
material 131 may be relatively high in the central region of the cooling
portion 130. In
other words, the concentration of the cooling material 131 may be relatively
high in the
central region between the inlet side and the outlet side of the cooling
portion 130. On
the other hand, in FIG. 16, the cooling material 131 may be disposed only in
the
central region, and the cooling material 131 may not be disposed at the
remaining
positions on the cooling portion 130 except for the central region.
[125] Referring to FIGS. 17 and 18, the cooling material 131 in the cooling
portion 130
may be disposed so that the concentration thereof is lower in the central
region of the
cooling portion 130 than at the remaining positions on the cooling portion
130. In other
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words, the concentration of the cooling material 131 may be lower in the
central region
of the cooling portion 130 than in the opposite end regions of the cooling
portion 130.
[126] In FIG. 17, the cooling material 131 may be disposed throughout the
body 135 along
the longitudinal direction of the body 135, and the concentration of the
cooling
material 131 may be relatively low in the central region of the cooling
portion 130. In
other words, the concentration of the cooling material 131 may be relatively
low in the
central region between the inlet side and the outlet side of the cooling
portion 130. On
the other hand, in FIG. 18, the cooling material 131 may be disposed only in
the
opposite end regions of the cooling portion 130, and the cooling material 131
may not
be disposed in the central region.
[127] Referring back to FIG. 4, the aerosol-generating article 100
according to the present
embodiment may be wrapped by the wrapper 170. The wrapper 170 may surround the
tobacco medium portion 110, the cooling portion 130, and the filter portion
150 that
are arranged in a row. As such, as the wrapper 170 surrounds the tobacco
medium
portion 110, the cooling portion 130, and the filter portion 150, the
cylindrical shape,
which is a unique shape of the aerosol-generating article 100, may be
maintained.
[128] The wrapper 170 may surround some or the entire outer peripheral
surface of each of
the tobacco medium portion 110, the cooling portion 130, and the filter
portion 150.
[129] Each of the tobacco medium portion 110, the cooling portion 130, and
the filter
portion 150 constituting the aerosol-generating article 100 according to the
present em-
bodiment may be individually wrapped by a separate wrapper (not illustrated).
When
the tobacco medium portion 110 includes a plurality of segments, each of the
plurality
of segments may be wrapped by a separate wrapper, or the plurality of segments
may
be wrapped by a single wrapper. As such, when each of the tobacco medium
portion
110, the cooling portion 130, and the filter portion 150 is individually
wrapped, the in-
dividually wrapped tobacco medium portion 110, cooling portion 130, and filter
portion 150 may be entirely rewrapped by the wrapper 170.
[130] The wrapper 170 may have a plurality of openings (not illustrated)
for allowing
external air to be introduced into or internal air to be discharged from the
aerosol-
generating article 100. The plurality of openings may be formed at positions
corre-
sponding to the plurality of openings 160 of the cooling portion 130.
[131] The wrapper 170 may be made of general wrapping paper. For example,
the wrapper
170 may be porous wrapping paper or non-porous wrapping paper.
[1321 A predetermined material may be included in the wrapper 170.
Here, the prede-
termined material may be silicon, but is not necessarily limited thereto. For
example,
silicon exhibits characteristics such as heat resistance, oxidation
resistance, resistances
to various chemicals, water repellency, electrical insulation, etc. However,
any
material other than silicon may be applied to the wrapper 170 without
limitation as
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long as it exhibits the above-described characteristics.
[133] In addition, the wrapper 170 may include a non-combustible material
to prevent the
aerosol-generating article 100 according to the present embodiment from being
burned.
For example, when the tobacco medium portion 110 is heated by the heater 370
of the
aerosol-generating device 300, there is a possibility that the aerosol-
generating article
100 is burned. In detail, when the temperature is raised to a temperature
above the
ignition point of any one of materials included in the tobacco medium portion
110, the
aerosol-generating article 100 may be burned.
[134] The wrapper 170 may prevent the aerosol-generating device 300 from
being con-
taminated by substances generated by the aerosol-generating article 100
according to
the present embodiment. While the user is smoking, liquid substances may be
generated in the aerosol-generating article 100. For example, as the aerosol
generated
by the aerosol-generating article 100 is cooled by the external air, liquid
substances
such as moisture may be generated.
[135] As the wrapper 170 wraps the tobacco medium portion 110, the cooling
portion 130,
and the filter portion 150, the liquid substances generated in the aerosol-
generating
article 100 may be prevented from leaking out of the aerosol-generating
article 100.
Therefore, the interior of the aerosol-generating device 300 may be prevented
from
being contaminated by the liquid substances generated by the aerosol-
generating article
100.
[136] The wrapper 170 may define an outermost surface of the aerosol-
generating article
100, so that the shape of the aerosol-generating article 100 may be varied
depending on
the shape of the wrapper 170. For example, characters, patterns, symbols,
images, etc.
may be printed on the wrapper 170. The characters, patterns, symbols, images,
etc.
printed on the wrapper 170 may be varied, so that the aerosol-generating
article 100
may provide various visual information.
[1371 Hereinafter, the aerosol-generating device into which the
aerosol-generating article
according to the embodiment of the present disclosure is inserted will be
described.
[138] FIG. 19 is a schematic view illustrating the configuration of the
aerosol-generating
device into which the aerosol-generating article according to the embodiment
of the
present disclosure is inserted.
[139] Referring to FIG. 19, the aerosol-generating device 300 according to
the present em-
bodiment may include the heater 370, a power supplier 330, a controller 310,
and an
aerosol generator 350. Here, it will be understood by those of ordinary skill
in the art
related to the present embodiment that other general-purpose components other
than
those illustrated in FIG. 19 may be further included in the aerosol-generating
device
300.
[140] Meanwhile, in FIG. 19, the power supplier 330, the controller 310,
and the aerosol
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generator 350 are illustrated as being arranged in a row. However, if
necessary, the ar-
rangement of the power supplier 330, the controller 310, and the aerosol
generator 350
may be modified. Also, in FIG. 19, the aerosol generator 350 is illustrated as
being
included, but the aerosol generator 350 may be excluded and the aerosol-
generating
article 100 may be operated only by being heated by the heater 370.
[141] The aerosol-generating article 100 may be inserted into the
aerosol-generating device
300. The aerosol-generating article 100 may be insertedly secured to the
aerosol-
generating device 300 by a fixing means. In the present embodiment, the
tobacco
medium portion 110 of the aerosol-generating article 100 may serve as the
fixing
means. However, other fixing means may be further included in addition to the
tobacco
medium portion 110.
[1421 The heater 370 may heat the aerosol-generating article 100.
When the heater 370 is
heated by power supplied from the power supplier 330, the heater 370 may
transfer
heat to the aerosol-generating article 100.
[143] The heater 370 may be an electrically resistive heater. The
heater 370 may include an
electrically conductive track. The heater 370 may heat the aerosol-generating
article
100 as a current flows through the electrically conductive track by the power
supplied
from the power supplier 330.
[1441 As another example, the heater 370 may be an induction
heater. The heater 370 may
include an electrically conductive coil for heating the aerosol-generating
article 100 by
an induction heating method, and the aerosol-generating article 100 may
include a
susceptor that may be heated by the induction heater.
[145] In FIG. 19, the heater 370 is illustrated as being disposed outside
the aerosol-
generating article 100, but is not necessarily limited thereto. The heater 370
may
include at least one of a tubular heating element, a plate-shaped heating
element, a
needle-shaped heating element, and a rod-shaped heating element. Depending on
the
shape of the at least one heating element included in the heater 370, the
heater 370 may
heat the inside or the outside of the aerosol-generating article 100 or may
heat both the
inside and the outside thereof simultaneously.
[146] The power supplier 330 may supply power for use in the aerosol-
generating device
300. For example, the power supplier 330 may supply power for heating the
heater
370, and may supply power for operating the controller 310. In addition, the
power
supplier 330 may supply power for operating a display, a sensor, a motor, etc.
of the
aerosol-generating device 300.
[147] The controller 310 may control the overall operation of the aerosol-
generating device
300. In detail, the controller 310 may control the operation of other
components
included in the power supplier 330 and the aerosol generator 350. Also, the
controller
310 may determine whether the aerosol-generating device 300 is in an operable
state
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by checking the state of each component in the aerosol-generating device 300.
[148] The aerosol generator 350 may generate an aerosol by heating a liquid
composition.
The generated aerosol may pass through the aerosol-generating article 100 and
be
delivered to the user. In other words, the aerosol generated by the aerosol
generator
350 may be introduced into the tobacco medium portion 110 of the aerosol-
generating
article 100.
[149] The aerosol generator 350 may include a liquid reservoir, a liquid
delivery means,
and a heating element, but is not necessarily limited thereto. For example,
the liquid
reservoir, liquid delivery means, and heating element may be included in the
aerosol-
generating device 300 as independent modules.
[150] The liquid reservoir may store the liquid composition. For example,
the liquid com-
position may be a liquid including a tobacco-containing material having a
volatile
tobacco flavor component, or a liquid including a non-tobacco material. The
liquid
reservoir may be manufactured to be attached to or detached from the aerosol-
generating device 300 or may be manufactured integrally with the aerosol-
generating
device 300.
[151] When the aerosol generator 350 according to the embodiment of the
present
disclosure includes the liquid containing the non-tobacco material, the liquid
com-
position stored in the liquid reservoir included in the aerosol generator 350
may not
contain nicotine, and the aerosol generated by the aerosol generator 350 may
be in-
troduced into the tobacco medium portion 110 without containing nicotine. In
this
case, the aerosol that does not contain nicotine may pass through the tobacco
medium
portion 110 and adsorb nicotine, and the aerosol that has passed through the
tobacco
medium portion 110 may contain nicotine.
[152] The liquid composition included in the aerosol generator 350 may
include water, a
solvent, ethanol, a plant extract, a spice, a flavoring agent, or a vitamin
mixture. The
spice may include menthol, peppermint, spearmint oil, and various fruit-
flavored in-
gredients, but is not necessarily limited thereto. The flavoring agent may
include in-
gredients that may provide the user with various flavors or tastes. The
vitamin mixture
may be a mixture of at least one of vitamin A, vitamin B, vitamin C, and
vitamin E, but
is not necessarily limited thereto. In addition, the liquid composition may
include an
aerosol former, such as glycerin and propylene glycol.
[153] While the disclosure has been illustrated and described with
reference to exemplary
embodiments thereof, it will be understood by those of ordinary skill in the
art that
various changes in form and details may be made therein without departing from
the
spirit and scope of the disclosure as defined by the appended claims.
Therefore, the
scope of the disclosure is defined not by the detailed description of the
disclosure but
by the appended claims, and all differences within the scope will be construed
as being
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included in the disclosure.
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