U.S. patent application number 17/259554 was filed with the patent office on 2021-06-03 for heat-not-burn tobacco matrix for preventing cut tobacco from falling and application thereof.
This patent application is currently assigned to CHINA TOBACCO GUANGDONG INDUSTRIAL CO., LTD.. The applicant listed for this patent is CHINA TOBACCO GUANGDONG INDUSTRIAL CO., LTD.. Invention is credited to Jing HU, Feng LI, Xi LIU, Yibo LIU, Zhijing LU, Jing SHAN, Ruifeng ZHAO.
Application Number | 20210161197 17/259554 |
Document ID | / |
Family ID | 1000005402683 |
Filed Date | 2021-06-03 |
United States Patent
Application |
20210161197 |
Kind Code |
A1 |
ZHAO; Ruifeng ; et
al. |
June 3, 2021 |
HEAT-NOT-BURN TOBACCO MATRIX FOR PREVENTING CUT TOBACCO FROM
FALLING AND APPLICATION THEREOF
Abstract
The present invention provides a heat-not-burn tobacco matrix
for preventing cut tobacco from falling and an application thereof.
The tobacco matrix is formed by disorderly mixing expanded cut
tobacco, formula leaf group cut tobacco and/or a tobacco sheet and
then rolling, and a density of the tobacco matrix is 0.25
g/cm.sup.3 to 0.70 g/cm.sup.3.
Inventors: |
ZHAO; Ruifeng; (Guangdong,
CN) ; LI; Feng; (Guangdong, CN) ; HU;
Jing; (Guangdong, CN) ; LIU; Xi; (Guangdong,
CN) ; LIU; Yibo; (Guangdong, CN) ; LU;
Zhijing; (Guangdong, CN) ; SHAN; Jing;
(Guangdong, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CHINA TOBACCO GUANGDONG INDUSTRIAL CO., LTD. |
Guangdong |
|
CN |
|
|
Assignee: |
CHINA TOBACCO GUANGDONG INDUSTRIAL
CO., LTD.
Guangdong
CN
|
Family ID: |
1000005402683 |
Appl. No.: |
17/259554 |
Filed: |
July 12, 2019 |
PCT Filed: |
July 12, 2019 |
PCT NO: |
PCT/CN2019/095704 |
371 Date: |
January 12, 2021 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A24B 15/301 20130101;
A24B 3/08 20130101; A24B 3/182 20130101; A24C 5/01 20200101 |
International
Class: |
A24C 5/01 20060101
A24C005/01; A24B 3/08 20060101 A24B003/08; A24B 15/30 20060101
A24B015/30 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 27, 2019 |
CN |
201910570232.3 |
Claims
1. A heat-not-burn tobacco matrix for preventing cut tobacco from
falling, wherein the tobacco matrix is formed by disorderly mixing
an expanded tobacco, a formula leaf group cut tobacco and/or a
tobacco sheet and then rolling, and a density of the tobacco matrix
is 0.25 g/cm.sup.3 to 0.70 g/cm.sup.3.
2. The heat-not-burn tobacco matrix according to claim 1, wherein a
moisture mass percentage of the tobacco matrix is 5.0% to
12.5%.
3. The heat-not-burn tobacco matrix according to claim 2, wherein a
moisture mass percentage of at least one constituent of the tobacco
matrix is 5.0% to 11.0%.
4. The heat-not-burn tobacco matrix according to claim 1, wherein a
mass of the expanded tobacco is 5% to 40% of a total mass of the
tobacco matrix.
5. The heat-not-burn tobacco matrix according to claim 4, wherein a
filling value of the expanded tobacco is 4.5 cm.sup.3/g to 7.5
cm.sup.3/g, and a whole cut rate of the expanded cut tobacco is 70%
to 90%.
6. The heat-not-burn tobacco matrix according to claim 5, wherein a
size of the expanded tobacco is greater than or equal to 1.0
mm.
7. The heat-not-burn tobacco matrix according to claim 6, wherein
the expanded tobacco is an expanded cut tobacco and/or an expanded
cut stem.
8. The heat-not-burn tobacco matrix according to claim 1, wherein a
mass of the formula leaf group cut tobacco is 0% to 95% of a total
mass of the tobacco matrix.
9. The heat-not-burn tobacco matrix according to claim 1, wherein a
mass of the tobacco sheet is 0% to 95% of a total mass of the
tobacco matrix.
10. The heat-not-burn tobacco matrix according to claim 9, wherein
a size of the tobacco sheet is 0.1 mm to 0.3 mm in thickness, 2 mm
to 30 mm in length, and 1 mm to 2 mm in width.
11. The heat-not-burn tobacco matrix according to claim 1, wherein
a tobacco extract, an atomizing agent and an aroma component are
loaded on the formula leaf group cut tobacco and/or the tobacco
sheet and/or the expanded tobacco.
12. A heat-not-burn cigarette, comprising the heat-not-burn tobacco
matrix according to claim 1.
13. An application method of the heat-not-burn cigarette according
to claim 12, comprising the following steps: inserting the
heat-not-burn cigarette into a heating element for fixed heating,
sucking, rotating for at least 30 degrees after sucking, and
pulling out the heat-not-burn cigarette.
14. A heat-not-burn cigarette, comprising the heat-not-burn tobacco
matrix according to claim 2.
15. A heat-not-burn cigarette, comprising the heat-not-burn tobacco
matrix according to claim 3.
16. A heat-not-burn cigarette, comprising the heat-not-burn tobacco
matrix according to claim 4.
17. A heat-not-burn cigarette, comprising the heat-not-burn tobacco
matrix according to claim 5.
18. A heat-not-burn cigarette, comprising the heat-not-burn tobacco
matrix according to claim 6.
19. A heat-not-burn cigarette, comprising the heat-not-burn tobacco
matrix according to claim 7.
20. A heat-not-burn cigarette, comprising the heat-not-burn tobacco
matrix according to claim 8.
Description
BACKGROUND
Technical Field
[0001] The present invention relates to the field of novel tobacco
products, and more particularly, to a heat-not-burn tobacco matrix
for preventing cut tobacco from falling and an application
thereof.
Description of Related Art
[0002] The research and development of heat-not-burn cigarette
products is a hot spot in the tobacco industry at present.
Different from traditional cigarettes, the heat-not-burn cigarettes
designed with an idea of "heat-not-burn" can heat tobacco leaves or
tobacco materials just enough to release flavor, without igniting
the tobacco leaves or the tobacco materials. In general, under
normal circumstances, a sucking temperature of the traditional
cigarette is as high as 900.degree. C., and a plurality of
potentially harmful substances (HPHCs) are produced by burning,
pyrolysis and thermal synthesis of the tobacco leaves or the
tobacco materials under high temperature conditions, while a
sucking temperature of the heat-not-burn cigarette is below
400.degree. C., which can reduce the production of HPHCs during
burning. According to the heat-not-burn cigarette, compositions of
a tobacco matrix are heated by heat of a heating device mainly
through the cooperation of the tobacco matrix and the heating
device, to generate aerosol for sucking. When the tobacco matrix
and the heating device are cooperated for use, the tobacco matrix
needs to be inserted into a heating cavity of the heating device,
and the tobacco matrix needs to be separated from the heating
device after the tobacco matrix is heated and sucked. Plugging and
unplugging of the heating device often lead to cut tobacco falling
and remaining in a heater, which is not conducive to cleaning and
subsequent use of the heater, and also affects environmental
sanitation. At present, a metal mesh cover is wrapped outside
cigarette paper to prevent cigarette ash of the traditional
cigarette from falling, but this operation is not suitable for
low-temperature not-burn cigarettes. Wrapping the mesh cover
outside the cigarette paper cannot prevent the cut tobacco from
falling when the heating device is plugged into and out from the
tobacco matrix, and the metal mesh cover can also cause friction
damage between the tobacco matrix and the heating device. To
prevent the tobacco matrix from falling during plugging and
unplugging, a patent which application number is CN107205494A
discloses a patent technology of extractor to prevent tobacco from
falling into a heating cavity, but it is troublesome to operate the
extractor and then take out cut tobacco each time after the
extractor is used, and it is also necessary to clean up residual
cut tobacco falling into the extractor. What is expected in the art
is to solve the problem that the cut tobacco falls in the process
of plugging and unplugging by improving the tobacco matrix
itself.
SUMMARY
[0003] The present invention aims to overcome the defect of cut
tobacco falling in the prior art, and provide a heat-not-burn
tobacco matrix for preventing the cut tobacco from falling.
[0004] An objective of the present invention is to provide a
heat-not-burn cigarette which contains the heat-not-burn tobacco
matrix for preventing cut tobacco from falling.
[0005] Another objective of the present invention is to provide an
application method of the heat-not-burn cigarette.
[0006] The above-mentioned objectives of the present invention are
achieved by the following technical solutions.
[0007] A heat-not-burn tobacco matrix for preventing cut tobacco
from falling, wherein the tobacco matrix is formed by disorderly
mixing expanded tobacco, formula leaf group cut tobacco and/or a
tobacco sheet and then rolling, and a density of the tobacco matrix
is 0.25 g/cm.sup.3 to 0.65 g/cm.sup.3.
[0008] The expanded cut tobacco is added to the tobacco matrix as a
filler, and a disorder intertwining degree of the expanded tobacco
matrix is increased through the disorderly mixing of the expanded
tobacco and other tobacco constituents, so that the whole tobacco
matrix can maintain an overall stability during plugging and
unplugging processes of a heater, which plays a good supporting
role for the tobacco matrix, and effectively reduces a fall-out
rate of the cut tobacco during plugging and unplugging. Moreover,
the addition of the expanded tobacco can also adjust a filling rate
of the whole tobacco matrix, ensure a smoothness of an air channel,
and facilitate circulation and heat transfer of an aerogel formed
by heating.
[0009] The density or the filling value directly shows a tightness
of the cut tobacco. If the density is too high, the tobacco matrix
will increase in mass and be too dense, which will easily lead to
problems of "head bursting" of the cigarette, unsmooth air flow and
large resistance during sucking. If the density is too low, an
interaction force between the constituents is not enough, which
will easily lead to cut tobacco falling.
[0010] For an appropriate density, it also needs to consider a
stable internal structure when a heating element is inserted into
the cut tobacco, and the cut tobacco is ensured to contact with the
heating element as much as possible through the extrusion of the
heating element, so as to improve a heat transfer efficiency.
Meanwhile, the extrusion of the heating element enables the tobacco
matrix to provide a proper air flow path and ventilation, and the
structure of the tobacco can still maintain a stable shape after
heating and baking.
[0011] Preferably, a moisture mass percentage of the tobacco matrix
is 5.0% to 12.5%.
[0012] In a specific tobacco matrix, the tobacco matrix may have a
density of 0.25 g/cm.sup.3 and a moisture mass percentage of 10.5%,
a density of 0.45 g/cm.sup.3 and a moisture mass percentage of
11.5%, or a density of 0.65 g/cm.sup.3 and a moisture mass
percentage of 9.5%.
[0013] The moisture of the cut tobacco has an important influence
on sensory characteristics, brittleness and elasticity of the cut
tobacco, and more importantly, on a processing performance thereof,
and a moisture of a certain constituent is controlled to a level of
11.5% to 12.5% lower than that of a traditional cigarette.
[0014] Preferably, at least one of the three constituents of the
tobacco matrix is controlled at 5.0% to 11.0%, which not only
regulates the overall moisture of the tobacco matrix, but also
adjusts overall physical characteristics of the tobacco matrix,
thus facilitating machine processing. The moisture and processing
performance will not be significantly affected. Moreover, the
brittleness is increased and a structure stability of the
disordered tobacco is ensured.
[0015] Preferably, a mass of the expanded tobacco is 5% to 40% of a
total mass of the tobacco matrix.
[0016] Preferably, the mass of the expanded tobacco is 15% to 30%
of the total mass of the tobacco matrix.
[0017] Due to the large losses of aroma components in the
preparation process of the expanded cut tobacco and thus taste
while sucking is bland, the inventors found through continuous
exploration that a sucking sense of the tobacco matrix can be fully
guaranteed, and an effect of preventing the cut tobacco from
falling can also be well achieved when an addition amount of the
expanded cut tobacco is 15% to 30%.
[0018] Preferably, a filling value of the expanded tobacco is 4.5
cm.sup.3/g to 7.5 cm.sup.3/g, and a whole cut rate of the expanded
cut tobacco is 70% to 90%. For example, the filling value may be
7.12 cm.sup.3/g, 4.88 cm.sup.3/g, 6.21 cm.sup.3/g or 6.07
cm.sup.3/g; and the whole cut rate may be 70%, 75%, 80%, 83%, 85%
or 87%.
[0019] The filling value of the expanded tobacco is an important
index of an expansion effect, and a high filling rate can directly
improve an overall filling rate of the tobacco matrix; the whole
cut rate is a main index of the expanded tobacco structure, which
can effectively guarantee a supporting stiffness of the expanded
tobacco to the tobacco substrate. A certain whole cut rate is also
beneficial to the improvement of an intertwining degree between the
expanded tobacco and the tobacco sheet, and can well reduce a
fall-out rate of the cut tobacco.
[0020] Preferably, the filling value of the expanded cut tobacco is
6.5 cm.sup.3/g to 7.5 cm.sup.3/g, and the whole cut rate of the
expanded cut tobacco is 83% to 90%.
[0021] Preferably, a size of the expanded tobacco is greater than
or equal to 1.0 mm. The expanded tobacco is broken cut tobacco when
the size of the expanded tobacco is less than 1.0 mm. The broken
cut tobacco cannot support the tobacco matrix well, and will affect
the smoothness of the air channel of the whole tobacco matrix and
increase a sucking resistance.
[0022] The length of the cut tobacco affects a bending degree and
smooth processing. If the cut tobacco is too long, the density of
the cut tobacco will be uneven, and "loose-end" or "bamboo joint
cigarette" will appear. An appropriate length has great influence
on the processing performance of the tobacco matrix. This
constituent with appropriate length may be any one or two of the
formula leaf group cut tobacco and the tobacco sheet. Considering
that the manufacturing methods and physical properties of each
constituent are quite different, constituents with large elasticity
and overlength are not suitable for the heat-not-burn tobacco
matrix, and the length needs to be selected with reference to other
physical indexes.
[0023] For various constituents of the tobacco, the length herein
also refers to a size at the largest or widest point.
[0024] Preferably, the expanded tobacco is expanded cut tobacco
and/or expanded cut stem.
[0025] Preferably, the expanded tobacco is the expanded cut
tobacco. The expanded cut tobacco is superior to the expanded cut
stem in aroma and sucking quality, and a whole cut rate and an
expansion size of the expanded cut tobacco are also greater than
that of the expanded cut stem; meanwhile, the expanded cut tobacco
is superior to ordinary cut tobacco in space filling rate, coke
reduction and harm reduction, which can further improve a sucking
sensory performance of the tobacco matrix. Therefore, the expanded
cut tobacco is preferred.
[0026] Preferably, a mass of the formula leaf group cut tobacco is
0% to 95% of a total mass of the tobacco matrix.
[0027] Preferably, a mass of the tobacco sheet is 0% to 95% of a
total mass of the tobacco matrix.
[0028] Preferably, a size of the tobacco sheet is 0.1 mm to 0.3 mm
in thickness, 2 mm to 30 mm in length, and 1 mm to 2 mm in
width.
[0029] The tobacco sheet may be prepared by a dry process, a
rolling process and a paper-making process, wherein a two-step
approach is employed in the paper-making process to prepare the
tobacco sheet, in which tobacco raw materials are extracted first,
then the paper-making process is employed to prepare a solid phase
into a tobacco sheet, a liquid phase is concentrated and coated on
the tobacco sheet, and then the obtained tobacco sheet is shredded
into the final tobacco sheet. Controlling a length and a width of
the tobacco sheet is beneficial to intertwining between the tobacco
sheet and the expanded cut tobacco, and further improves a
stiffness and a spatial stability, which is not only beneficial to
increase an air flow channel, but also can reduce a fall-out rate
of the cut tobacco.
[0030] Preferably, a tobacco extract, an atomizing agent and an
aroma component are loaded on the formula leaf group cut tobacco
and/or the tobacco sheet and/or the expanded tobacco.
[0031] The present invention further protects a heat-not-burn
cigarette which contains the heat-not-burn tobacco matrix. The
heat-not-burn cigarette includes a mouth contact section, a cooling
section and a heat-not-burn tobacco matrix section, wherein the
heat-not-burn tobacco matrix section is the heat-not-burn tobacco
matrix according to the present invention.
[0032] The present invention further protects an application method
of the heat-not-burn cigarette, which includes the following steps:
inserting the heat-not-burn cigarette into a heating element for
fixed heating, sucking, rotating for at least 30 degrees after
sucking, and pulling out the heat-not-burn cigarette.
[0033] The heat-not-burn cigarette according to the present
invention is preferably used in cooperation with a corresponding
heater, and the heater specifically include a heating element and a
fixing seat for the heating element, a sleeve, a control element
and a housing, as well as a cigarette insertion opening, a vent
hole and a power switch on the housing, wherein the sleeve, the
heating element and the cigarette insertion opening form a heating
cavity of the tobacco matrix. The air flow enters the heater and
the cigarette through the vent holes, the cigarette is inserted
into the sleeve through the cigarette insertion opening and
receives heat from the heating element, and the sleeve is provided
with a positioning piece, so that the heat-not-burn tobacco matrix
can receive the heat of the heating element to the maximum
extent.
[0034] The specific operation during use is as follows:
[0035] (1) inserting the heat-not-burn cigarette into the heating
cavity through the cigarette insertion opening and contacting with
the positioning piece;
[0036] (2) pressing the power switch to start heating, so that the
heat of the heating element heats the heat-not-burn tobacco matrix
for people to suck; and
[0037] (3) rotating for at least 30 degrees after sucking, and
pulling out the heat-not-burn cigarette.
[0038] The root cause why the cut tobacco does not fall off lies in
stable structure and moderate strength thereof. Even if a heating
rod is inserted, the structure can be guaranteed to be stable, and
an extrusion effect of the heating rod can make an internal shape
not change obviously after heating.
[0039] Compared with the prior art, the present invention has the
following beneficial effects.
[0040] (1) According to the heat-not-burn cigarette of the present
invention, the expanded tobacco is disorderly mixed and intertwined
with other tobacco constituents, so that a good supporting effect
is achieved on the tobacco matrix, an overall stability of the
whole tobacco matrix is ensured, and a cut tobacco adjusting rate
is effectively reduced.
[0041] (2) According to the heat-not-burn cigarette of the present
invention, by controlling the density of the tobacco matrix, on one
hand, a structure stability is guaranteed, and on the other hand, a
filling rate of the whole tobacco matrix is adjusted, a smoothness
of an air channel is guaranteed, and circulation of an aerogel
formed by heating and heat transfer are facilitated.
[0042] (3) According to the heat-not-burn cigarette of the present
invention, a smoothness of the air channel and a good sucking
sensory property of the tobacco matrix are ensured by compatibility
and performance cooperation of the constituents.
DESCRIPTION OF THE EMBODIMENTS
[0043] The present invention will be further described below with
reference to the specific embodiments, but the embodiments are not
intended to limit the present invention in any form. Unless
otherwise indicated, the reagents, methods, and devices employed in
the present invention are routine reagents, methods, and devices in
the art.
[0044] The reagents and materials used in the present invention are
commercially available unless otherwise stated.
Embodiment 1
[0045] A heat-not-burn tobacco matrix for preventing cut tobacco
from falling, wherein the tobacco matrix was formed by disorderly
mixing expanded tobacco, formula leaf group cut tobacco and/or
tobacco sheet and then rolling, a density of the tobacco matrix was
0.25 g/cm.sup.3, and a moisture content of the tobacco matrix was
10.5%.
Embodiment 2
[0046] A heat-not-burn tobacco matrix for preventing cut tobacco
from falling, wherein the tobacco matrix was formed by disorderly
mixing expanded tobacco, formula leaf group cut tobacco and/or
tobacco sheet and then rolling, a density of the tobacco matrix was
0.65 g/cm.sup.3, and a moisture content of the tobacco matrix was
9.5%.
Embodiments 3 to 9
[0047] A heat-not-burn tobacco matrix for preventing cut tobacco
from falling, wherein the tobacco matrix was formed by disorderly
mixing expanded tobacco, formula leaf group cut tobacco and/or
tobacco sheet and then rolling, a density of the tobacco matrix was
0.45 g/cm.sup.3, a moisture content of the tobacco matrix was 8%, a
mass of the tobacco sheet was 50% of a total mass of the tobacco
matrix, and a size of the expanded tobacco was greater than or
equal to 1.0 mm.
[0048] See Table 1 for specific parameters of the tobacco sheet and
the expanded cut tobacco.
TABLE-US-00001 TABLE 1 Expanded cut tobacco Tobacco sheet Whole
Filling cut Mass Thick- Serial value rate fraction ness Length
Width number (cm.sup.3/g) (%) (%) Category (mm) (mm) (mm) Embodi-
7.12 83 15 Expanded 0.1 2 1 ment cut 3 tobacco Embodi- 7.12 85 30
Expanded 0.3 15 2 ment cut 4 tobacco Embodi- 4.88 87 15 Expanded
0.1 2 1 ment cut 5 stem Embodi- 4.88 87 30 Expanded 0.3 15 2 ment
cut 6 stem Embodi- 6.21 70 15 Ordinary 0.1 2 1 ment cut 7 tobacco
Embodi- 6.07 75 30 Ordinary 0.3 15 2 ment cut 8 tobacco Embodi-
7.12 80 20 Expanded 0.2 20 1.5 ment cut 9 tobacco Embodi- 4.88 87 5
Expanded 0.1 2 1 ment cut 10 stem Embodi- 4.88 87 40 Expanded 0.1 2
1 ment cut 11 stem
[0049] Result Detection
[0050] 400 tobacco matrixes mentioned above were prepared, and a
sucking experiment was carried out with the cooperation of a
heater.
[0051] A specific sucking experiment was as follows:
[0052] (1) inserting the heat-not-burn cigarette into the heating
cavity through the cigarette insertion opening and contacting with
the positioning piece;
[0053] (2) pressing a power switch to start heating, so that the
heat of the heating element heated the heat-not-burn tobacco matrix
for people to suck; and
[0054] (3) rotating for at least 30 degrees after sucking, and
pulling out the heat-not-burn cigarette.
[0055] A fall-out rate of the cut tobacco after heating and sucking
was evaluated, wherein a score of 5 referred to that no cut tobacco
fell out basically; a score of 4 referred to that a small amount of
cut tobacco fell out; a score of 3 referred to that part of the cut
tobacco fell out obviously; a score of 2 referred to a large number
of cut tobacco fell out; and a score of 1 referred to that all the
cut tobacco fell out basically.
TABLE-US-00002 TABLE 2 Serial Evaluation of fall-out Sensory number
of cut tobacco evaluation Embodiment 1 4.5 8 Embodiment 2 5 8
Embodiment 3 5 9 Embodiment 4 5 9.5 Embodiment 5 5 9 Embodiment 6 4
8.5 Embodiment 7 4 8 Embodiment 8 4 8.5 Embodiment 9 4 8 Embodiment
10 4.5 8 Embodiment 11 4 8
[0056] A method in ISO standard 6565:2002 was used to measure the
sucking resistance. It should be noted that, when testing the
sucking resistance, measurement results of cigarettes inserted into
the heating cavity of the heater are as shown in Table 3.
TABLE-US-00003 TABLE 3 Serial Sucking number resistance (kPa)
Embodiment 1 0.251 Embodiment 2 0.445 Embodiment 3 0.321 Embodiment
4 0.283 Embodiment 5 0.246 Embodiment 6 0.346 Embodiment 7 0.575
Embodiment 8 0.484 Embodiment 9 0.535 Embodiment 10 0.433
Embodiment 11 0.258
COMPARATIVE EXAMPLE 1
[0057] A heat-not-burn tobacco matrix was formed by rolling tobacco
sheet, wherein the tobacco sheet were the same as those in
Embodiment 1, with a thickness of 0.1 mm, a length of 2 mm and a
width of 1 mm. A score of a fall-out rate of the cut tobacco after
sucking was 4, and a sucking resistance was 0.935 kPa.
COMPARATIVE EXAMPLE 2
[0058] A heat-not-burn tobacco matrix was formed by disorderly
mixing tobacco sheet and expanded cut tobacco and then rolling,
wherein the tobacco sheet were the same as those in Embodiment 1,
with a thickness of 0.1 mm, a length of 2 mm and a width of 1 mm. A
fill-rate of the expanded cut tobacco was 7.12 cm.sup.3/g, a whole
cut rate of the expanded cut tobacco was 83%, and a mass fraction
of the expanded cut tobacco was 5%. A score of a fall-out rate of
the cut tobacco after sucking was 3, and a sucking resistance was
0.845 kPa.
COMPARATIVE EXAMPLE 3
[0059] A heat-not-burn tobacco matrix was formed by disorderly
mixing tobacco sheet and expanded cut tobacco and then rolling,
wherein the tobacco sheet were the same as those in Embodiment 1,
with a thickness of 0.1 mm, a length of 2 mm and a width of 1 mm. A
fill-rate of the expanded cut tobacco was 7.12 cm.sup.3/g, a whole
cut rate of the expanded cut tobacco was 83%, and a mass fraction
of the expanded cut tobacco was 50%. A score of a fall-out rate of
the cut tobacco after heating and sucking was 5, and a sucking
resistance was 0.445 kPa, but the heat-not-burn tobacco matrix had
a very poor sucking taste and bland aroma.
[0060] From the foregoing embodiments and comparative examples, it
can be seen that the tobacco matrix formed by rolling the tobacco
sheet without the expanded cut tobacco in Comparative Example 1 is
easy to fall out after heating and sucking, which is obviously
inferior to the embodiments; the content of the expanded cut
tobacco added in Comparative Example 2 is too low, and the
phenomenon of the cut tobacco falling out after heating and sucking
of the obtained tobacco matrix is also obvious, which is not as
good as that of the embodiments; and the addition amount of the
expanded cut tobacco in Comparative Example 3 is too large, which
can control the fall-out rate of the cut tobacco well, but
excessive addition of the expanded cut tobacco will damage overall
aroma and overall sensory evaluation of the tobacco matrix.
[0061] Obviously, the above-mentioned embodiments of the present
invention are merely examples for clearly illustrating the present
invention, but are not intended to limit the implementations of the
present invention. For those of ordinary skills in the art, other
different forms of changes or variations can be made on the basis
of the above description. It is not necessary or possible to
exhaust all the implementations here. Any modifications, equivalent
substitutions, and improvements made within the spirit and
principle of the present invention shall all fall within the scope
of protection claimed by the present invention.
* * * * *