U.S. patent application number 17/430380 was filed with the patent office on 2022-05-12 for aerosol-generating article including first wrapper and second wrapper, and aerosol-generating system using the aerosol-generating article.
This patent application is currently assigned to KT&G CORPORATION. The applicant listed for this patent is KT&G CORPORATION. Invention is credited to Eun Mi JEOUNG, Sun Hwan JUNG, Sung Jong KI, Young Joong KIM, John Tae LEE, In Su PARK.
Application Number | 20220142233 17/430380 |
Document ID | / |
Family ID | |
Filed Date | 2022-05-12 |
United States Patent
Application |
20220142233 |
Kind Code |
A1 |
KIM; Young Joong ; et
al. |
May 12, 2022 |
AEROSOL-GENERATING ARTICLE INCLUDING FIRST WRAPPER AND SECOND
WRAPPER, AND AEROSOL-GENERATING SYSTEM USING THE AEROSOL-GENERATING
ARTICLE
Abstract
The resent disclosure relates to an aerosol-generating article
including a first wrapper and a second wrapper, and an
aerosol-generating system including the aerosol-generating
article.
Inventors: |
KIM; Young Joong; (Daejeon,
KR) ; KI; Sung Jong; (Daejeon, KR) ; PARK; In
Su; (Seoul, KR) ; LEE; John Tae; (Daejeon,
KR) ; JUNG; Sun Hwan; (Daejeon, KR) ; JEOUNG;
Eun Mi; (Daejeon, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KT&G CORPORATION |
Daejeon |
|
KR |
|
|
Assignee: |
KT&G CORPORATION
Daejeon
KR
|
Appl. No.: |
17/430380 |
Filed: |
December 8, 2020 |
PCT Filed: |
December 8, 2020 |
PCT NO: |
PCT/KR2020/017861 |
371 Date: |
August 12, 2021 |
International
Class: |
A24D 1/02 20060101
A24D001/02; A24D 1/20 20060101 A24D001/20; A24F 40/20 20060101
A24F040/20 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 18, 2019 |
KR |
10-2019-0170201 |
Claims
1. An aerosol-generating article comprising: a first part including
an aerosol-generating material; a second part including a tobacco
material; a third part that cools air that has passed through the
first part and the second part; a fourth part including a filter
material; a first wrapper that wraps at least one of the first part
and the second part; and a second wrapper that wraps the first
wrapper, the third part, and the fourth part, wherein the first
part, the second part, the third part, and the fourth part are
sequentially arranged in a length direction of the
aerosol-generating article.
2. The aerosol-generating article of claim 1, wherein the first
wrapper has a thickness of about 5 .mu.m to about 30 .mu.m, and the
second wrapper has a thickness of about 30 .mu.m to about 70
.mu.m.
3. The aerosol-generating article of claim 1, wherein the first
wrapper includes at least one of aluminum (Al), copper (Cu), zinc
(Zn), gold (Au), silver (Ag), and iron (Fe), and the second wrapper
includes cellulose.
4. The aerosol-generating article of claim 1, wherein the first
wrapper has an oil resistance of 5 or more based on a 3M KIT method
and has a thermal conductivity of about 50 Wm.sup.-1/K.sup.-1 to
about 500 Wm.sup.-1/K.sup.-1.
5. The aerosol-generating article of claim 1, wherein the first
wrapper and the second wrapper have a combined tensile strength of
about 4.5 kgf to about 10 kgf.
6. An aerosol-generating system comprising: the aerosol-generating
article of claim 1; and an aerosol-generating device configured to
heat at least one of the first part and the second part of the
aerosol-generating article.
7. The aerosol-generating system of claim 6, wherein, when the
aerosol-generating article is heated by using the
aerosol-generating device, the second part has a maximum
temperature in a range of about 180.degree. C. to about 250.degree.
C.
8. The aerosol-generating system of claim 6, wherein, when the
aerosol-generating article is heated by using the
aerosol-generating device, the second part is maintained at a
temperature of 170.degree. C. or higher after 120 seconds have
passed from a start of heating.
9. The aerosol-generating system of claim 6, wherein, each of the
first part and the second part has a length of about 10 mm to about
14 mm, and the aerosol-generating device is configured to heat both
a portion of the first part and a portion of the second part.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to an aerosol-generating
article including a first wrapper and a second wrapper, and an
aerosol-generating system using the aerosol-generating article.
BACKGROUND ART
[0002] There is growing demand for an aerosol generating device
that generates an aerosol by heating an aerosol generating material
in an aerosol generating article, rather than by combusting aerosol
generating article. Accordingly, studies on a heating-type aerosol
generating article and a heating-type aerosol generating device
have been actively conducted.
[0003] A heating-type aerosol-generating article may contain a
filler, such as a moisturizer, to promote the generation of an
aerosol, unlike a combustion-type cigarette. When a general filter
wrapping paper is used, liquid components such as the filler
contained in the heating-type aerosol-generating article may
leak.
[0004] In addition, the heating-type aerosol-generating article has
a temperature difference between a region that is directly heated
by an apparatus and a region that is not directly heated, and
accordingly, there is a problem that the generation of an aerosol
and/or the transfer of nicotine is not sufficiently performed.
DISCLOSURE
Technical Solution
[0005] An aerosol-generating article according to an embodiment may
solve the problem of the existing technology described above.
[0006] However, the technical goal is not limited thereto, and
other technical goals may be inferred from the following
examples.
Advantageous Effects
[0007] According to the aerosol-generating article according to an
embodiment, leakage of liquid components in at least one of a first
part and a second part may be reduced. Specifically, the
aerosol-generating article according to an embodiment may have an
oil resistance of 5 or more based on a 3M KIT method.
[0008] In addition, according to the aerosol-generating article
according to an embodiment, heat may be efficiently transferred to
regions of the first part and the second part which are not
directly heated by a heater.
[0009] In addition, according to the aerosol-generating article
according to an embodiment, the entire wrapper including a first
wrapper and a second wrapper has a sufficient tensile strength
(about 4.5 kgf or more), and thus, different parts of the
aerosol-generating article may not be separated from each other
during a manufacturing process of the aerosol-generating
article.
[0010] In addition, the aerosol-generating article according to an
embodiment may reduce spots (i.e., oil marks) which may occur
during a manufacturing and distribution process of the
aerosol-generating article, by inclusion of the first wrapper made
of a metal material.
[0011] The effects of the present disclosure are not limited to
those described above and may include all effects that may be
inferred from a configuration that will be described later.
DESCRIPTION OF DRAWINGS
[0012] FIG. 1 is a view illustrating an example of inserting an
aerosol-generating article into an aerosol-generating device,
according to an embodiment;
[0013] FIG. 2 is a view illustrating an example of inserting an
aerosol-generating article into an aerosol-generating device,
according to another embodiment;
[0014] FIG. 3 is a view illustrating an example of inserting an
aerosol-generating article into an aerosol-generating device,
according to another embodiment;
[0015] FIG. 4 is a schematic view illustrating the configuration of
an aerosol-generating article according to an embodiment;
[0016] FIG. 5 is a cross-sectional view of a second part of an
aerosol-generating article according to an embodiment;
[0017] FIG. 6 is a view illustrating insertion of an
aerosol-generating article into an aerosol-generating device,
according to an embodiment;
[0018] FIG. 7 is a graph showing temperature changes of a second
part of an aerosol-generating article according to an embodiment;
and
[0019] FIG. 8 are photographs illustrating the degree of liquid
leakage of aerosol-generating articles according to
embodiments.
BEST MODE
[0020] According to an first aspect of the present disclosure, an
aerosol-generating article includes: a first part including an
aerosol-generating material; a second part including a tobacco
material; a third part that cools air that has passed through the
first part and the second part; a fourth part including a filter
material; a first wrapper that wraps at least one of the first part
and the second part; and a second wrapper that wraps the first
wrapper, the third part, and the fourth part, wherein the first
part, the second part, the third part, and the fourth part are
sequentially arranged in a length direction of the
aerosol-generating article.
[0021] The first wrapper may have a thickness of about 5 .mu.m to
about 30 .mu.m, and the second wrapper may have a thickness of
about 30 .mu.m to about 70 .mu.m.
[0022] The first wrapper may include at least one of aluminum (Al),
copper (Cu), zinc (Zn), gold (Au), silver (Ag), and iron (Fe), and
the second wrapper may include cellulose.
[0023] The first wrapper may have an oil resistance of 5 or more
based on a 3M KIT method and may have a thermal conductivity of
about 50 Wm.sup.-1/K.sup.-1 to about 500 Wm.sup.-1/K.sup.-1.
[0024] The first wrapper and the second wrapper may have a combined
tensile strength of about 4.5 kgf to about 10 kgf.
[0025] According to a second aspect of the present disclosure, an
aerosol-generating system includes: the aerosol-generating article
according to the first aspect; and an aerosol-generating device
that heats at least one of the first part and the second part of
the aerosol-generating article.
[0026] When the aerosol-generating article is heated by using the
aerosol-generating device, the second part may reach a maximum
temperature in a range of about 180.degree. C. to about 250.degree.
C.
[0027] When the aerosol-generating article is heated by using the
aerosol-generating device, the second part may be maintained at a
temperature of about 170.degree. C. or higher after 120 seconds
have passed from a start of heating.
[0028] Based on the length direction of the aerosol-generating
article, each of the first part and the second part has a length of
about 10 mm to about 14 mm, and the aerosol-generating device may
heat both a portion of the first part and a portion of the second
part.
[0029] The technical solutions are not limited to those described
above and may include all matters which may be inferred throughout
by one of ordinary skill in the art.
MODE FOR INVENTION
[0030] With respect to the terms in the various embodiments, the
general terms which are currently and widely used are selected in
consideration of functions of structural elements in the various
embodiments of the present disclosure. However, meanings of the
terms can be changed according to intention, a judicial precedence,
the appearance of a new technology, and the like. In addition, in
certain cases, a term which is not commonly used can be selected.
In such a case, the meaning of the term will be described in detail
at the corresponding portion in the description of the present
disclosure. Therefore, the terms used in the various embodiments of
the present disclosure should be defined based on the meanings of
the terms and the descriptions provided herein.
[0031] In addition, unless explicitly described to the contrary,
the word "comprise" and variations such as "comprises" or
"comprising" will be understood to imply the inclusion of stated
elements but not the exclusion of any other elements. In addition,
the terms "-er", "-or", and "module" described in the specification
mean units for processing at least one function and/or operation
and can be implemented by hardware components or software
components and combinations thereof.
[0032] Hereinafter, embodiments of the present disclosure will be
described in detail with reference to the accompanying drawings so
that those of ordinary skill in the art may easily implement the
embodiments. However, the present disclosure may be implemented in
various different forms and is not limited to the embodiments
described herein.
[0033] As used herein, "A and/or B" refer to at least one of A and
B.
[0034] Also, ".about.arranged on" indicates that a member is
arranged on one surface of another member and includes both cases
where a member is arranged in contact with or without contact with
another member.
[0035] As used herein, expressions such as "at least one of," when
preceding a list of elements, modify the entire list of elements
and do not modify the individual elements of the list. For example,
the expression, "at least one of a, b, and c," should be understood
as including only a, only b, only c, both a and b, both a and c,
both b and c, or all of a, b, and c.
[0036] It will be understood that when an element or layer is
referred to as being "over," "above," "on," "connected to" or
"coupled to" another element or layer, it can be directly over,
above, on, connected or coupled to the other element or layer or
intervening elements or layers may be present. In contrast, when an
element is referred to as being "directly over," "directly above,"
"directly on," "directly connected to" or "directly coupled to"
another element or layer, there are no intervening elements or
layers present. Like numerals refer to like elements
throughout.
[0037] Hereinafter, embodiments of the present disclosure will be
described in detail with reference to the accompanying
drawings.
[0038] FIGS. 1 through 3 are diagrams showing examples in which an
aerosol generating article 20000 is inserted into an aerosol
generating device 10000.
[0039] Referring to FIG. 1, the aerosol generating device 10000 may
include a battery 11000, a controller 12000, and a heater 13000.
Referring to FIGS. 2 and 3, the aerosol generating device 10000 may
further include a vaporizer 14000. Also, the aerosol generating
article 20000 may be inserted into an inner space of the aerosol
generating device 10000.
[0040] FIGS. 1 through 3 illustrate components of the aerosol
generating device 10000, which are related to the example
embodiments. Therefore, it will be understood by one of ordinary
skill in the art related to the present embodiment that other
general-purpose components may be further included in the aerosol
generating device 10000, in addition to the components illustrated
in FIGS. 1 through 3.
[0041] Also, FIGS. 1 and 3 illustrate that the aerosol generating
device 10000 includes the heater 13000. However, as necessary, the
heater 13000 may be omitted.
[0042] FIG. 1 illustrates that the battery 11000, the controller
12000, and the heater 130000 are arranged in series. Also, FIG. 2
illustrates that the battery 11000, the controller 12000, the
vaporizer 14000, and the heater 13000 are arranged in series. Also,
FIG. 3 illustrates that the vaporizer 14000 and the heater 13000
are arranged in parallel. However, the internal structure of the
aerosol generating device 10000 is not limited to the structures
illustrated in FIGS. 1 through 3. In other words, according to the
design of the aerosol generating device 10000, the battery 11000,
the controller 12000, the heater 13000, and the vaporizer 14000 may
be differently arranged.
[0043] When the aerosol generating article 20000 is inserted into
the aerosol generating device 10000, the aerosol generating device
10000 may operate the heater 13000 and/or the vaporizer 14000 to
generate an aerosol from the aerosol generating article 20000
and/or the vaporizer 14000. The aerosol generated by the heater
13000 and/or the vaporizer 14000 is delivered to a user by passing
through the aerosol generating article 20000.
[0044] As necessary, even when the aerosol generating article 20000
is not inserted into the aerosol generating device 10000, the
aerosol generating device 10000 may heat the heater 13000.
[0045] The battery 11000 may supply power to be used for the
aerosol generating device 10000 to operate. For example, the
battery 11000 may supply power to heat the heater 13000 or the
vaporizer 14000, and may also supply power to the controller 12000
for an operation thereof. Also, the battery 11000 may supply power
for operations of a display, a sensor, a motor, etc. mounted in the
aerosol generating device 10000.
[0046] The controller 12000 may generally control operations of the
aerosol generating device 10000. In detail, the controller 12000
may control not only operations of the battery 11000, the heater
13000, and the vaporizer 14000, but also operations of other
components included in the aerosol generating device 10000. Also,
the controller 12000 may check a state of each of the components of
the aerosol generating device 10000 to determine whether or not the
aerosol generating device 10000 is able to operate.
[0047] The controller 12000 may include at least one processor. A
processor can be implemented as an array of a plurality of logic
gates or as a combination of a general-purpose microprocessor and a
memory in which a program executable in the microprocessor is
stored. It will be understood by one of ordinary skill in the art
that the processor can be implemented in other forms of
hardware.
[0048] The heater 13000 may be heated by the power supplied from
the battery 11000. For example, when the aerosol generating article
20000 is inserted into the aerosol generating device 10000, the
heater 13000 may be located outside the aerosol generating article
20000. Thus, the heated heater 13000 may increase a temperature of
an aerosol generating material in the cigarette 20000.
[0049] The heater 13000 may include an electro-resistive heater.
For example, the heater 13000 may include an electrically
conductive track, and the heater 13000 may be heated when a current
flows through the electrically conductive track. However, the
heater 13000 is not limited to the example described above and may
include all heaters which may be heated to a desired temperature.
Here, the desired temperature may be pre-set in the aerosol
generating device 10000 or may be set as a temperature desired by a
user.
[0050] In another example, the heater 13000 may include an
induction heater. In detail, the heater 13000 may include an
electrically conductive coil for heating aerosol generating article
in an induction heating method, and the aerosol generating article
may include a susceptor which may be heated by the induction
heater.
[0051] For example, the heater 13000 may include a tube-type
heating element, a plate-type heating element, a needle-type
heating element, or a rod-type heating element, and may heat the
inside or the outside of the aerosol generating article 20000,
according to the shape of the heating element.
[0052] Also, the aerosol generating device 10000 may include a
plurality of heaters 13000. Here, the plurality of heaters 13000
may be inserted into the aerosol generating article 20000 or may be
arranged outside the aerosol generating article 20000. Also, some
of the plurality of heaters 13000 may be inserted into the aerosol
generating article 20000 and the others may be arranged outside the
aerosol generating article 20000. In addition, the shape of the
heater 13000 is not limited to the shapes illustrated in FIGS. 1
through 3 and may include various shapes.
[0053] The vaporizer 14000 may generate an aerosol by heating a
liquid composition and the generated aerosol may pass through the
aerosol generating article 20000 to be delivered to a user. In
other words, the aerosol generated via the vaporizer 14000 may move
along an air flow passage of the aerosol generating device 10000
and the air flow passage may be configured such that the aerosol
generated via the vaporizer 14000 passes through the cigarette
20000 to be delivered to the user.
[0054] For example, the vaporizer 14000 may include a liquid
storage, a liquid delivery element, and a heating element, but it
is not limited thereto. For example, the liquid storage, the liquid
delivery element, and the heating element may be included in the
aerosol generating device 10000 as independent modules.
[0055] The liquid storage may store a liquid composition. For
example, the liquid composition 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
storage may be formed to be attached/detached to/from the vaporizer
14000 or may be formed integrally with the vaporizer 14000.
[0056] For example, the liquid composition may include water, a
solvent, ethanol, plant extract, spices, flavorings, or a vitamin
mixture. The spices may include menthol, peppermint, spearmint oil,
and various fruit-flavored ingredients, but are not limited
thereto. The flavorings may include ingredients capable of
providing various flavors or tastes to a user. Vitamin mixtures may
be a mixture including at least one of vitamin A, vitamin B,
vitamin C, and vitamin E, but are not limited thereto. Also, the
liquid composition may include an aerosol forming substance, such
as glycerin and propylene glycol.
[0057] The liquid delivery element may deliver the liquid
composition of the liquid storage to the heating element. For
example, the liquid delivery element may be a wick such as a cotton
fiber, ceramic fiber, glass fiber, or porous ceramic, but is not
limited thereto.
[0058] The heating element is an element for heating the liquid
composition delivered by the liquid delivery element. For example,
the heating element may be a metal heating wire, a metal hot plate,
a ceramic heater, or the like, but is not limited thereto. In
addition, the heating element may include a conductive filament
such as nichrome wire and may wound around the liquid delivery
element. The heating element may be heated by current and may
transfer heat to the liquid composition in contact with the heating
element, thereby heating the liquid composition. As a result, an
aerosol may be generated.
[0059] For example, the vaporizer 14000 may be referred to as a
cartomizer or an atomizer, but it is not limited thereto.
[0060] The aerosol generating device 10000 may further include
other components in addition to the battery 11000, the controller
12000, the heater 13000, and the vaporizer 14000. For example, the
aerosol generating device 10000 may include a display capable of
outputting visual information and/or a motor for outputting haptic
information. Also, the aerosol generating device 10000 may include
at least one sensor (e.g., a puff detecting sensor, a temperature
detecting sensor, a cigarette insertion detecting sensor, etc.).
Also, the aerosol generating device 10000 may be formed as a
structure where, even when the cigarette 20000 is inserted into the
aerosol generating device 10000, external air may be introduced or
internal air may be discharged.
[0061] Although not illustrated in FIGS. 1 through 3, the aerosol
generating device 10000 and an additional cradle may form together
a system. For example, the cradle may be used to charge the battery
11000 of the aerosol generating device 10000. Alternatively, the
heater 13000 may be heated when the cradle and the aerosol
generating device 10000 are coupled to each other.
[0062] As an example, external air may be introduced through at
least one air passage formed in the aerosol-generating device
10000. For example, opening and closing of the air passage formed
in the aerosol-generating device 10000 and/or the size of the air
passage may be adjusted by the user. Accordingly, the amount and
quality of smoke may be adjusted by the user. As another example,
external air may be introduced into the interior of the
aerosol-generating article 20000 through at least one hole formed
on the surface of the aerosol-generating article 20000.
[0063] FIG. 4 is a schematic view illustrating the configuration of
an aerosol-generating article 20000 according to an embodiment.
[0064] According to the embodiment, the aerosol-generating article
20000 may include a first part 21000, a second part 22000, a third
part 23000, and a fourth part 24000, which are serially arranged in
the length direction of the aerosol-generating article 20000. As an
example, the first part 21000 may include an aerosol-generating
material, the second part 22000 may include a tobacco material, the
third part 23000 may cool air and aerosols that have passed through
the first part 21000 and the second part 22000, and the fourth part
24000 may include a filter material.
[0065] In an embodiment, the first part 21000, the second part
22000, the third part 23000, and the fourth part 24000 may be
arranged sequentially in the length direction of the
aerosol-generating article 20000. Accordingly, an aerosol generated
in at least one of the first part 21000 and the second part 22000
may pass through the first part 21000, the second part 22000, the
third part 23000, and the fourth part 24000 sequentially, and
accordingly, the user may inhale the aerosol from the fourth part
24000.
[0066] In an embodiment, the first part 21000 may have a length of
about 8 mm to about 12 mm, and the second part 22000 may have a
length of about 10 mm to about 14 mm. However, embodiments are not
necessarily limited to this numerical range, and the length of the
first part 21000 and the second part 22000 may be appropriately
adjusted within a range that may be easily changed by a person
skilled in the art.
[0067] Specifically, the first part 21000 may include an
aerosol-generating material. In this case, the aerosol-generating
material may include, for example, at least one of glycerin,
propylene glycol, ethylene glycol, dipropylene glycol, diethylene
glycol, triethylene glycol, tetraethylene glycol, and oleyl
alcohol.
[0068] The second part 22000 may include a tobacco material. In the
case of a heating-type cigarette, for example, cut tobacco leaves,
reconstituted tobacco, expanded tobacco, or the like may be used as
the tobacco material. In addition, the second part 22000 may
include a tobacco sheet having a continuously extending length. In
addition, the second part 22000 may additionally include an
aerosol-generating material such as a moisturizer. The component of
the aerosol-generating material included in the second part 22000
may be the same as the component of the aerosol-generating material
included in the first part 21000. However, the present disclosure
is not necessarily limited thereto.
[0069] The third part 23000 may cool airflow formed by an aerosol
generated in at least one of the first part 21000 and the second
part 22000. The third part 23000 may be made of a polymer material
or a biodegradable polymer material and may have a cooling
function. For example, the third part 23000 may be made of
polylactic acid (PLA) fibers, but is not limited thereto.
Alternatively, the third part 23000 may be made of a cellulose
acetate filter having a plurality of holes. However, the third part
23000 is not limited to the above-described example, and a material
that performs a function of cooling the aerosol may correspond to
the third part 23000 without limitation. For example, the third
part 23000 may be a tube filter or a paper tube including a
hollow.
[0070] The fourth part 24000 may include a filter material. For
example, the fourth part 24000 may be a cellulose acetate filter.
There is no limitation on the shape of the fourth part 24000. For
example, the fourth part 24000 may be a cylindrical rod or a
tube-type rod including a hollow therein. Furthermore, the fourth
part 24000 may be a recess-type rod. When the fourth part 24000
includes a plurality of segments, at least one of the plurality of
segments may be made in a different shape.
[0071] The fourth part 24000 may be made to generate flavor. As an
example, a fragrance liquid may be sprayed on the fourth part
24000, or a separate fiber coated with the fragrance liquid may be
inserted into the fourth part 24000.
[0072] In an embodiment, the aerosol-generating article 20000 may
include a first wrapper 25000 and a second wrapper 26000. For
example, the first wrapper 25000 may wrap at least one of the first
part 21000 and the second part 22000. Also, for example, the second
wrapper 26000 may wrap the first wrapper 25000, the third part
23000, and the fourth part 24000. For example, the first wrapper
25000 may wrap only the first part 21000 or the second part 22000.
Alternatively, the first wrapper 25000 may wrap the entirety of the
first part 21000 and a portion of the second part 22000. In any
case, the second wrapper 26000 may wrap the first wrapper 25000,
the third part 23000, and the fourth part 24000. However, the
present disclosure is not necessarily limited thereto.
[0073] In an embodiment, the second wrapper 26000 may be located at
the outermost part of the aerosol-generating article 20000, and the
second wrapper 26000 may have at least one hole through which
external air flows in or internal gas flows out. The second wrapper
26000 may be a single wrapper or a combination of a plurality of
wrappers.
[0074] As an example, the first part 21000 of the
aerosol-generating article 20000 may include a crimped corrugated
sheet containing an aerosol-generating material, and the second
part 22000 may include cut tobacco leaves. The third part 23000 may
include a cooler, and the fourth part 24000 may include a filter
material. The first wrapper 25000 may be formed of a silver (Ag)
thin film or a copper (Cu) thin film, and the second wrapper 26000
may be formed of a cellulose wrapper. However, the present
disclosure is not necessarily limited thereto.
[0075] When the aerosol-generating article 20000 is coupled to the
aerosol-generating device 10000, the first part 21000 and the
second part 22000 may be inserted in the aerosol-generating device
10000, and the third part 23000 and the fourth part 24000 may be
exposed to the outside. In another example, the entire first part
21000 and a portion of the second part 22000 may be inserted in the
aerosol-generating device 10000. A user may inhale the aerosol
while the fourth part 24000 is put into the user's mouth. In this
case, the aerosol may be generated when external air passes through
the first and second parts, and the generated aerosol may pass
through the third and fourth parts and be delivered to the user's
mouth.
[0076] FIG. 5 is a cross-sectional view of the second part 22000 of
the aerosol-generating article 20000 according to an embodiment.
Although not shown in FIG. 5, the first part 21000 may also be
wrapped by the first wrapper 25000. Accordingly, descriptions of
the first wrapper 25000 and the second wrapper 26000 to be
described below may be equally applied to the first part 21000 as
well as the second part 22000.
[0077] In an embodiment, the second part 22000 of the
aerosol-generating article 20000 may include a tobacco material
100, the first wrapper 25000, and the second wrapper 26000, which
may be sequentially arranged from the inside. The tobacco material
100 may be contained in the second part 22000 in the form of, for
example, cut tobacco leaves.
[0078] In an embodiment, the first wrapper 25000 may have a
cylindrical shape and may wrap the tobacco material 100. The first
wrapper 25000 may have a thickness d1 of about 5 .mu.m to about 30
.mu.m. As such, heat may be appropriately transferred to regions of
the first part 21000 and the second part 22000 which are not
directly heated by the aerosol-generating device, and leakage of
liquid components, such as a moisturizer included in at least one
of the first part 21000 and the second part 22000 may be reduced.
In addition, the tensile strength of the entire wrapper including
the first wrapper 25000 and the second wrapper 26000 may be
improved.
[0079] In an embodiment, the first wrapper 25000 may have a thermal
conductivity of about 50 Wm.sup.-1/K.sup.-1 to about 500
Wm.sup.-1/K.sup.-1. Since the aerosol-generating article 20000
according to an embodiment includes the first wrapper 25000 made of
a metal material, thermal conductivity in the aerosol-generating
article 20000 through free electrons may be improved, and
accordingly, regions that are not directly heated in the
aerosol-generating article 20000 may be effectively heated.
[0080] In addition, the first wrapper 25000 may include at least
one of aluminum (Al), copper (Cu), zinc (Zn), gold (Au), silver
(Ag), and iron (Fe). Preferably, the first wrapper 25000 may have a
cylindrical shape formed of a metal thin film. For example, the
first wrapper 25000 may have a cylindrical shape made of aluminum
foil, copper foil, or silver foil. Since the first wrapper 25000
has a cylindrical shape formed of a metal thin film, heat may be
efficiently transferred to a region not directly heated by the
apparatus from among the first part 21000 and the second part
22000, and leakage of liquid components, such as a moisturizer
included in at least one of the first part 21000 and the second
part 22000 may be reduced.
[0081] In an embodiment, the second wrapper 26000 may have a
thickness d2 of about 30 .mu.m to about 70 .mu.m. The second
wrapper 26000 may entirely wrap the aerosol-generating article
20000. For example, the second wrapper 26000 may wrap the first
wrapper 25000, the third part 23000, and the fourth part 24000.
Accordingly, the first part 21000 and the second part 22000 may be
wrapped by both the first wrapper 25000 and the second wrapper
26000, and the third part 23000 and the fourth part 24000 may be
wrapped only by the second wrapper 26000. However, the present
disclosure is not necessarily limited thereto.
[0082] The second wrapper 26000 may include cellulose or dextrin.
Preferably, the second wrapper 26000 may be a cellulose
wrapper.
[0083] In an embodiment, the entire wrapper including both the
first wrapper 25000 and the second wrapper 26000 may have a
thickness (d1+d2) of about 35 .mu.m to about 100 .mu.m. As such,
leakage of liquid components, such as moisturizers, to the outside
may be reduced.
[0084] In addition, the first wrapper 25000 and the second wrapper
26000 together may have a combined tensile strength of about 4.5
kgf to about 10 kgf. As such, the different parts of the
aerosol-generating article 20000 may not be detached from each
other during a manufacturing process of the aerosol-generating
article 20000.
[0085] FIG. 6 is a view illustrating a case in which an
aerosol-generating article 20000 is inserted into an
aerosol-generating device 10, according to the embodiment. For
convenience of description, the third and fourth parts of the
aerosol-generating article 20000 are omitted in FIG. 6.
[0086] Another aspect of the present disclosure may provide an
aerosol-generating system including the above-described
aerosol-generating article 20000 and the aerosol-generating device
10 for heating at least one of the first part 21000 and the second
part 22000 of the aerosol-generating article 20000.
[0087] Referring to FIG. 6, the aerosol-generating device 10 may
include an accommodation space 12 for accommodating the
aerosol-generating article 20000 and a heating element 11 for
heating the aerosol-generating article 20000.
[0088] In an embodiment, the aerosol-generating article 20000 may
be inserted into the accommodation space 12, and the heating
element 11 may receive power from a battery (not shown) of the
aerosol-generating device 10 and heat the first part 21000 and the
second part 22000 of the aerosol-generating article 20000.
Specifically, the heating element 11 may heat a portion of the
first part 21000 and a portion of the second part 22000. For
example, the heating element 11 may heat a portion of the first
part 21000 and a portion of the second part 22000, which are
portions facing the heating element 11 as shown in FIG. 6.
Accordingly, other portions of the first part 21000 and the second
part 22000 may not be directly heated.
[0089] In an embodiment, the first wrapper 25000 may effectively
transfer, to the first part 21000 and the second part 22000, heat
transferred from the heating element 11. In particular, a
measurement point M of the aerosol-generating article 20000 shown
in FIG. 6 may not be directly heated because it is not facing the
heating element 11. However, according to the present disclosure,
since the first wrapper 25000 has excellent thermal conductivity,
the first wrapper 25000 may effectively transfer heat supplied from
the heating element 11 to the measurement point M in the length
direction of the aerosol-generating article 20000. Accordingly, all
of the first part 21000 and the second part 22000 may receive heat
uniformly, and the amount of the aerosol formed by heating the
first part 21000 and the second part 22000 and the amount of
nicotine transfer may be increased.
[0090] FIG. 7 is a graph showing temperature changes of the second
part 22000 over time when the first wrapper 25000 and the second
wrapper 26000 are applied to the aerosol-generating article 20000,
according to an embodiment. Specifically, after inserting the
aerosol-generating article 20000 into the aerosol-generating device
10 as shown in FIG. 6 and operating the heating element 11, a
temperature change at the measurement point M corresponding to the
second part 22000 was measured.
[0091] Referring to FIG. 7, in a comparative example, an
aerosol-generating article without a wrapper was found to have a
slow temperature rise rate, with an average temperature of about
140.degree. C. and a maximum temperature of about 170.degree. C. On
the other hand, an aerosol-generating article including a silver
foil wrapper according to an embodiment was found to have a fast
temperature rise rate, with an average temperature of about
170.degree. C. and a maximum temperature of about 190.degree. C.,
and was evaluated to have an excellent thermal insulation effect by
the silver foil wrapper.
[0092] In addition, an aerosol-generating article including a
copper foil wrapper according to an embodiment was found to have
the fastest temperature rise rate, with an average temperature of
about 180.degree. C. and a maximum temperature of about 190.degree.
C., and showed the best thermal insulation effect due to the copper
foil wrapper.
[0093] It was confirmed that, when the aerosol-generating article
20000 according to embodiments is heated by using the
aerosol-generating device 10, the second part 22000 may have a
maximum temperature in the range of about 180.degree. C. to about
250.degree. C.
[0094] In addition, it was confirmed that, when the
aerosol-generating article 20000 according to embodiments is heated
by using the aerosol-generating device 10, the second part 22000
may be maintained at a temperature of about 170.degree. C. or
higher after 120 seconds have passed from the start of heating.
[0095] The first wrapper 25000 may have an oil resistance of 5 or
more based on a 3M KIT method. Oil resistance measurement by the 3M
KIT method was performed as follows.
[0096] Principle
[0097] The 3M KIT method is a method commonly used to analyze the
oil resistance of paper. In the method, a solution for measuring
oil resistance is prepared and dropped onto a test piece, and after
a certain period of time, the oil resistance is determined by the
highest solution number that does not leave any oil marks on the
test piece.
[0098] Instrument and Apparatus
[0099] *99As a stock bottle, a storage bottle made of a glass cap
or foil lined cap to prevent evaporation was used. As a test
bottle, a bottle equipped with a dropper or rod capable of dropping
a solution onto the test piece was used.
TABLE-US-00001 Test Method Kit number Castor oil [ml] Toluene [ml]
Heptane [ml] 1 200 0 0 2 180 10 10 3 160 20 20 4 140 30 30 5 120 40
40 6 100 50 50 7 80 60 60 8 60 70 70 9 40 80 80 10 20 90 90 11 0
100 100 12 0 90 110
[0100] The solution was prepared by mixing castor oil, toluene, and
heptane in a ratio determined by the kit number as shown in the
table above.
[0101] The test was performed from the low kit number reagent on
the test piece, and after 15 seconds after dropping a prepared
reagent onto the test piece, the dropped reagent was removed using
a dampened cotton or tissue paper and checked for oil marks.
[0102] If no oil marks appeared, the experiment was continued while
increasing the kit number, and the experiment was conducted until
oil marks occurred. Oil resistance was evaluated by applying the
kit number without final oil marks.
[0103] As a result of evaluating the oil resistance of the
aerosol-generating article according to the present disclosure
based on the 3M KIT method described above, it was confirmed that
the first wrapper 25000 according to the embodiment may have an oil
resistance of 5 or more based on the 3M KIT method.
[0104] FIG. 8 are photographs illustrating the degree of liquid
leakage of aerosol-generating articles according to a comparative
example and embodiments.
[0105] Referring to FIG. 8, as a comparative example, in an
aerosol-generating article without a wrapper, it may be seen that
leakage of a liquid component of a second part is relatively large.
On the other hand, in an aerosol-generating article using a wrapper
according to an embodiment, it may be seen that leakage of a liquid
component of a second part is relatively small and does hardly
occur. Therefore, according to the present disclosure, there is an
advantage of improving the oil resistance of an aerosol-generating
article.
[0106] Although not described through the drawings, according to an
embodiment, a first wrapper may wrap only a first part of the
aerosol-generating article.
[0107] Specifically, the present disclosure may provide an
aerosol-generating article including: a first part including an
aerosol-generating material; a second part including a tobacco
material; a third part that cools air passing through the first
part and the second part; and a fourth part including a filter
material, wherein the first part, the second part, the third part,
and the fourth part are arranged in an order based on a length
direction of the aerosol-generating article, the aerosol-generating
article further including: a first wrapper that wraps the first
part; and a second wrapper that wraps the first wrapper, the second
part, the third part, and the fourth part.
[0108] The embodiments described earlier may be equally applied to
the above case. However, since the first wrapper made of metal
wraps only the first part of the aerosol-generating article,
thermal conductivity in the first part may be improved, and leakage
of moisturizer components of an aerosol-generating material
included in the first part may be reduced. In particular, in the
case of the aerosol-generating article according to the embodiment,
since the aerosol-generating material contained in the first part
may be included in a liquid form, the effect of preventing leakage
may be important. By preventing or reducing leakage from the first
part by the first wrapper, durability of the aerosol-generating
article may be improved, and a better smoking feeling may be
provided to a user.
[0109] Also, according to an embodiment, the first wrapper may wrap
only the second part of the aerosol-generating article. In this
case, thermal conductivity in the second part may be improved, and
leakage of moisturizer components in an aerosol-generating material
included in the second part may be reduced.
[0110] At least one of the components, elements, modules or units
(collectively "components" in this paragraph) represented by a
block in the drawings, such as the controller 12000 in FIGS. 1-3
and 6, may be embodied as various numbers of hardware, software
and/or firmware structures that execute respective functions
described above, according to an exemplary embodiment. For example,
at least one of these components may use a direct circuit
structure, such as a memory, a processor, a logic circuit, a
look-up table, etc. that may execute the respective functions
through controls of one or more microprocessors or other control
apparatuses. Also, at least one of these components may be
specifically embodied by a module, a program, or a part of code,
which contains one or more executable instructions for performing
specified logic functions, and executed by one or more
microprocessors or other control apparatuses. Further, at least one
of these components may include or may be implemented by a
processor such as a central processing unit (CPU) that performs the
respective functions, a microprocessor, or the like. Two or more of
these components may be combined into one single component which
performs all operations or functions of the combined two or more
components. Also, at least part of functions of at least one of
these components may be performed by another of these components.
Further, although a bus is not illustrated in the above block
diagrams, communication between the components may be performed
through the bus. Functional aspects of the above exemplary
embodiments may be implemented in algorithms that execute on one or
more processors. Furthermore, the components represented by a block
or processing steps may employ any number of related art techniques
for electronics configuration, signal processing and/or control,
data processing and the like.
[0111] The descriptions of the above-described embodiments are
merely examples, and it will be understood by one of ordinary skill
in the art that various changes and equivalents thereof may be
made. Therefore, the scope of the disclosure should be defined by
the appended claims, and all differences within the scope
equivalent to those described in the claims will be construed as
being included in the scope of protection defined by the
claims.
* * * * *