TECHNICAL FIELD
[0001] The disclosure relates to the technical field of novel cigarettes, and specifically
a novel cigarette with reduced tobacco vapor temperature and improved taste.
BACKGROUND
[0002] The novel cigarette heated through external heating but not the combustion of tobacco
can obvious reduce a large number of hazardous substances generated during the combustion
of the cigarette, so that the harm of passive smoking for non-smoking population is
reduced. In the novel cigarette heated through an external heat source, one important
constituent part is a cigarette of the heated cigarette, and the cigarette is a tobacco
product capable of releasing a vapor aerosol under low temperature heating conditions.
The tobacco product reaches an atomization temperature at the temperature of 200 to
400°C in general, the temperature of high temperature atomization vapor entering oral
cavity through a filter tip can be higher than the temperature of ordinary cigarette
combustion.
SUMMARY
[0003] In order to solve the disadvantages in the prior art, the disclosure provides a novel
cigarette with reduced tobacco vapor temperature and improved taste.
[0004] A novel cigarette with reduced tobacco vapor temperature and improved taste comprises
a tobacco segment, a filter tip segment, and a flue gas reflux segment arranged between
the tobacco segment and the filter tip segment. An air inlet opening communicating
with the tobacco segment is provided on a part of the flue gas reflux segment adjacent
to the tobacco segment. An air outlet opening communicating with the filter tip segment
is provided on a part of the flue gas reflux segment adjacent to the filter tip segment.
A plurality of air flow baffles are provided from top to bottom within the flue gas
reflux segment in an alternating arrangement to create a serpentine flue gas reflux
path. One end of the flue gas reflux path communicates with the air inlet opening,
and the other end of the flue gas reflux path is connected to the air outlet opening.
Tobacco vapor enters the air inlet opening and passes through the flue gas reflux
path. The length of a flue gas reflux path of the flue gas reflux segment is increased.
The temperature of flue gas is reduced by means of heat exchange of a hot air flow
with the air flow baffles and the inner wall of the flue gas reflux segment.
[0005] Furthermore, the novel cigarette also comprises a fragrance strengthening segment
between the tobacco segment and the flue gas reflux segment.
[0006] Furthermore, the filter tip segment is also arranged between the tobacco segment
and the flue gas reflux segment.
[0007] Furthermore, the filter tip segment can be a hollow filter tip bar, an ordinary filter
tip bar or a countersunk head filter tip bar.
[0008] Furthermore, the flue gas reflux segment can be various air flow structures for increasing
the circulation extension of vapor inside the cigarette such as a spiral air flow
structure or a serpentine vapor path structure.
[0009] Furthermore, an air inlet opening is provided on the upper side and the lower side
of the flue gas reflux segment adjacent to the tobacco segment respectively, the flue
gas reflux segment is provided with two flue gas reflux branched paths, the inlet
of each flue gas reflux branched path corresponds to one air inlet opening, and the
air outlet opening communicates with the outlets of the two flue gas reflux branched
paths respectively.
[0010] Furthermore, an air inlet opening is provided on a part of the flue gas reflux segment
adjacent to the tobacco segment, an air outlet opening is provided on a part of the
flue gas reflux segment adjacent to the filter tip segment vertically respectively,
the flue gas reflux path is provided with two flue gas reflux branched paths, the
inlet of each flue gas reflux branch path corresponds to the air inlet opening, and
the outlet of each flue gas reflux branch path corresponds to one air outlet opening.
[0011] Furthermore, the novel cigarette also comprises a fragrance strengthening segment
between the tobacco segment and the flue gas reflux segment, the fragrance strengthening
segment is internally provided with a tobacco flavor fragile capsule or an adsorbent
carrier and flavors and fragrances adsorbed onto the adsorbent carrier, or the adsorbent
carrier is paved on the surface layers of the air flow baffles, and the adsorbent
carrier is adsorbed with the flavors and fragrances.
[0012] Furthermore, the adsorbent carrier is made from foam metals, plastic materials, molecular
sieves, polypropylene, active carbon, Dacron, nylon fiber, porous ceramics, non-woven
fabrics, carbon fiber, natural cellulose fiber or cellulose derivative fiber.
[0013] Furthermore, the tobacco segment consists of tobacco shreds, tobacco sheets, an atomizing
agent, an auxiliary material, a tobacco extract and tobacco flavors and fragrances,
the tobacco shreds account for 40% to 90% of the total weight of the tobacco product,
the tobacco sheets account for 5% to 50% of the total weight of the tobacco product,
the atomizing agent accounts for 2% to 35% of the total weight of the tobacco product,
the auxiliary material accounts for 0 to 10% of the total weight of the tobacco product,
the tobacco extract accounts for 0.1% to 20% of the total weight of the tobacco product,
and the tobacco flavors and fragrances account for 0.01% to 8% of the total weight
of the tobacco product.
[0014] Furthermore, the tobacco shreds account for 50% to 80% of the total weight of the
tobacco product, the tobacco sheets account for 10% to 40% of the total weight of
the tobacco product, the atomizing agent accounts for 5% to 30% of the total weight
of the tobacco product, the auxiliary material accounts for 0.5% to 8% of the total
weight of the tobacco product, the tobacco extract accounts for 0.5% to 15% of the
total weight of the tobacco product, and the tobacco flavors and fragrances account
for 0.05% to 5% of the total weight of the tobacco product.
[0015] Furthermore, the air inlet opening is designed in the shape of a horn mouth.
[0016] Furthermore, the flue gas reflux segment accounts for 1/6 to 2/3 of the cigarette
length of the whole novel cigarette, appropriate length of the flue gas reflux segment
can obviously reduce the vapor temperature of the cigarette, and the cigarette is
appropriate in draw resistance.
[0017] Furthermore, the cigarette length of the novel cigarette is 35 to 100 mm, and the
outer diameter of the cigarette is 3 to 12 mm.
[0018] The novel cigarette has the beneficial effects that firstly, the designed flue gas
reflux segment can change the circulation path of the flue gas reflux, the length
of a flue gas reflux path of the flue gas reflux segment is increased, the heat exchange
efficiency of vapor and the cigarette is increased, and the temperature of the flue
gas reflux of the external heating type novel cigarette is reduced effectively; and
secondly, the fragrance strengthening segment tightly adjacent to the tobacco product
sufficiently utilizes the air flow heat of the tobacco segment, the vapor temperature
is reduced, and simultaneously the comfort of the vapor is improved.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019]
FIG. 1 is a structure diagram of the embodiment I of the novel cigarette with reduced
tobacco vapor temperature and improved taste in the disclosure;
FIG. 2 is a structure diagram of the embodiment II of the novel cigarette with reduced
tobacco vapor temperature and improved taste in the disclosure;
FIG. 3 is a structure diagram of the embodiment III of the novel cigarette with reduced
tobacco vapor temperature and improved taste in the disclosure;
FIG. 4 is a structure diagram of the embodiment IV of the novel cigarette with reduced
tobacco vapor temperature and improved taste in the disclosure;
and FIG. 5 is a structure diagram of the embodiment V of the novel cigarette with
reduced tobacco vapor temperature and improved taste in the disclosure.
[0020] In the figures, 1, tobacco segment; 2, fragrance strengthening segment; 3, 12, air
inlet opening; 4, flue gas reflux path; 5, air flow baffle; 6, 13, air outlet opening;
7, 11, solid filter tip; 8, 10, hollow filter tip; 9, fragile capsule; and 10, tobacco
segment
DESCRIPTION OF THE EMBODIMENTS
[0021] In combination with the accompanying drawings, the technical scheme in the disclosure
is described clearly and completely.
Embodiment I
[0022] FIG. 1 shows a novel cigarette containing a fragrance strengthening segment provided
by the disclosure, the novel cigarette comprises a tobacco segment 1, the fragrance
strengthening segment 2, a flue gas reflux segment and a filter tip segment which
are connected in sequence, the filter tip segment consists of a solid filter tip 7
and a hollow filter tip 8, wherein the solid filter tip 7 is connected with the flue
gas reflux segment, and the hollow filter tip 8 is positioned at the outermost end.
An air inlet opening 3 communicating with the fragrance strengthening segment 2 is
provided on a part of the flue gas reflux segment adjacent to the fragrance strengthening
segment 2, and an air outlet opening 6 communicating with the filter tip segment is
provided on a part of the flue gas reflux segment adjacent to the filter tip segment.
A plurality of air flow baffles 5 are provided from top to bottom within the flue
gas reflux segment in an alternating arrangement to create a serpentine flue gas reflux
path 4, one end of the flue gas reflux path 4 communicates with the air inlet opening
3, and the other end of the flue gas reflux path 4 is connected to the air outlet
opening 6. As shown in FIG. 1, the embodiment is provided with four air flow baffles
which comprise a first air flow baffle, a second air flow baffle, a third air flow
baffle and a fourth air flow baffle from top to bottom in sequence.
[0023] An air inlet opening 3 is provided on the upper side and the lower side of the flue
gas reflux segment adjacent to the fragrance strengthening segment 2 respectively,
the first air flow baffle positioned at the uppermost end is arranged below the air
inlet opening 3, one end is in contact with the fragrance strengthening segment 2
for sealing, the other end and the filter tip segment are arranged at an interval
to form an opening, one end of the second air flow baffle positioned below the opening
is in contact with the filter tip segment for sealing, the other end and the fragrance
strengthening segment 2 are arranged at an interval to form an opening, so that the
first air flow baffle and the second air flow baffle are arranged in a staggered manner,
a serpentine flue gas reflux path 4 is formed by the opening formed by the first air
flow baffle and the filter tip segment and the opening formed between the second air
flow baffle and the fragrance strengthening segment 2 between the first air flow baffle
and the upper side wall of the flue gas reflux segment, after the cigarette is heated,
tobacco vapor enters the air inlet opening 3 and passes through the flue gas reflux
path 4, the length of a flue gas reflux path of the flue gas reflux segment is increased,
the temperature of flue gas is reduced by means of heat exchange of a hot air flow
with the air flow baffles and the inner wall of the flue gas reflux segment, after
the flue gas flows out through the air outlet opening 6, the tobacco vapor enters
into the solid filter tip 7 and the hollow filter tip 8 in sequence, and finally the
temperature of flue gas is lowered below 45°C.
[0024] The arrangement of the third air flow baffle, the fourth air flow baffle and the
air inlet opening 3 on the lower side is similar to the above description, and does
not need to be described in details herein.
[0025] In the embodiment, the tobacco segment 1 consists of tobacco shreds, tobacco sheets,
an atomizing agent, an auxiliary material, a tobacco extract and tobacco flavors and
fragrances, wherein the tobacco shreds account for 70% of the total weight, the tobacco
sheets account for 14% of the total weight, the atomizing agent consists of glycerinum
and ethylene glycol in the mass ratio of 3: 1 and accounts for 12% of the total weight,
the auxiliary material accounts for 1% of the total weight, the tobacco extract accounts
for 2.8% of the total weight, and the flavors and fragrances account for 0.2% of the
total weight.
[0026] In the embodiment, non-woven fabric serves as an adsorbing medium in the fragrance
strengthening segment 2, a blended tobacco fragrance substance with low boiling point
is added, and the addition amount accounts for 0.1% of the total weight of the tobacco
segment.
[0027] According to the novel cigarette prepared in the embodiment, the tobacco vapor temperature
of the cigarette can be reduced obviously, and the taste of the added fragrance strengthening
segment 2 is coordinated with the tobacco vapor.
Embodiment II
[0028] FIG. 2 shows a novel cigarette without containing a fragrance strengthening segment
provided by the disclosure and is basically similar to the structural form in the
embodiment I, the novel cigarette comprises a tobacco segment 1, a flue gas reflux
segment and a filter tip segment which are connected in sequence, the filter tip segment
consists of a solid filter tip 7 and a hollow filter tip 8, wherein the solid filter
tip 7 is connected with the flue gas reflux segment, and the hollow filter tip 8 is
positioned at the outermost end. The solid filter tip 7 and the solid filter tip 8.
Wherein, the flue gas reflux segment in the embodiment is the same as the flue gas
reflux segment in the embodiment I, and just the flue gas reflux segment changes to
be connected with the tobacco segment 1.
[0029] In the embodiment, the tobacco segment 1 consists of tobacco shreds, tobacco sheets,
an atomizing agent, a tobacco extract and tobacco flavors and fragrances, wherein
the tobacco shreds account for 65% of the total weight, the tobacco sheets account
for 17% of the total weight, the atomizing agent consists of glycerinum and ethylene
glycol in the mass ratio of 4: 1 and accounts for 15% of the total weight, the tobacco
extract accounts for 2.5% of the total weight, and the flavors and fragrances account
for 0.5% of the total weight. Due to the fact that the cigarette is internally free
of the fragrance strengthening segment, flavors and fragrances inside the tobacco
product are appropriately added, so that the taste of the smoke vapor is improved.
[0030] Preferably, an adsorbent carrier can be paved on the surface layers of the air flow
baffles 5, and the adsorbent carrier is adsorbed with the flavors and fragrances,
so that the fragrance strengthening effect can be reached for tobacco vapor.
[0031] According to the novel cigarette structure prepared in the embodiment, the tobacco
vapor temperature of the cigarette can be reduced obviously, and the fragrance of
the tobacco is obvious.
Embodiment III
[0032] FIG. 3 shows a novel cigarette with a fragrance strengthening segment containing
a fragile capsule, the novel cigarette comprises a tobacco segment 1, the fragrance
strengthening segment 2, a flue gas reflux segment and a filter tip segment which
are connected in sequence, the filter tip segment consists of a solid filter tip 7
and a hollow filter tip 8, wherein the solid filter tip 7 is connected with the flue
gas reflux segment, and the hollow filter tip 8 is positioned at the outermost end.
Wherein, the flue gas reflux segment in the embodiment is the same as the flue gas
reflux segment in the embodiment I.
[0033] In the embodiment, the tobacco segment 1 consists of tobacco shreds, tobacco sheets,
an atomizing agent, a tobacco extract and tobacco flavors and fragrances, wherein
the tobacco shreds account for 60% of the total weight, the tobacco sheets account
for 15% of the total weight, the atomizing agent consists of glycerinum, ethylene
glycol and water in the mass ratio of 10: 10: 1 and accounts for 20% of the total
weight, the tobacco extract accounts for 4.9% of the total weight, and the flavors
and fragrances account for 0.1% of the total weight.
[0034] In the embodiment, the fragrance strengthening segment 2 is internally provided with
the fragile capsule 9, containing the blended tobacco flavors and fragrances, wrapped
by cellulose acetate fiber, before the tobacco segment 1 is heated, the fragile capsule
9 is broken, the flavors and fragrances are released, and the flavors and fragrances
are brought out by using a hot flow of the tobacco segment 1, so that the fragrance
plumpness of the tobacco vapor is increased.
[0035] According to the novel cigarette structure prepared in the embodiment, the tobacco
vapor temperature of the cigarette can be reduced obviously, and the fragrance of
the substance contained in the capsule is obvious.
Embodiment IV
[0036] FIG. 4 is a novel cigarette containing a fragrance strengthening segment provided
by the disclosure, the novel cigarette comprises a tobacco segment 1, the fragrance
strengthening segment 2, a flue gas reflux segment and a filter tip segment which
are connected in sequence, the filter tip segment consists of a solid filter tip 10
and a hollow filter tip 11, wherein the solid filter tip 10 is connected with the
flue gas reflux segment, and the hollow filter tip 11 is positioned at the outermost
end.
[0037] Wherein, the flue gas reflux segment in the embodiment is the same as the flue gas
reflux segment in the embodiment I, but a structural form arranged in an opposite
direction in the embodiment I is adopted, the air inlet opening is 12, the air outlet
opening is 13, namely the air inlet opening 12 is provided on a part of the flue gas
reflux segment adjacent to the fragrance strengthening segment 2, and an air outlet
opening 13 is provided on a part of the flue gas reflux segment adjacent to the filter
tip segment, a plurality of air flow baffles 5 are provided from top to bottom within
the flue gas reflux segment in an alternating arrangement to create a serpentine flue
gas reflux path 4, one end of the flue gas reflux path 4 communicates with the air
inlet opening 12, and the other end of the flue gas reflux path is connected to the
air outlet opening 13. In the embodiment, the two air flow baffles 5 are arranged
vertically respectively, a flue gas reflux branched path is formed by one upper air
flow baffle 5 and the corresponding lower air flow baffle 5 respectively, and the
outlet of each flue gas reflux branched path communicates with the corresponding air
outlet opening 13 respectively.
[0038] The air inlet openings 12 are positioned between the upper air flow baffles and the
lower air flow baffles, after the tobacco vapor enters from the air inlet openings
12, the tobacco vapor enters into the two flue gas reflux branched paths from the
passages between the upper air flow baffles and the lower air flow baffles respectively,
and then the flue gas flows out from the air outlet opening 13 after passing through
the flue gas reflux branched paths.
[0039] In the embodiment, the tobacco segment 1 consists of tobacco shreds, tobacco sheets,
an atomizing agent, a tobacco extract, a non-tobacco extract and tobacco flavors and
fragrances, wherein the tobacco shreds account for 50% of the total weight, the tobacco
sheets account for 28% of the total weight, the auxiliary material accounts for 2%
of the total weight, the atomizing agent consists of glycerinum, ethylene glycol and
water in the mass ratio of 10: 10: 0.5 and accounts for 15% of the total weight, the
tobacco extract and the non-tobacco extract account for 4.5% of the total weight,
and the tobacco flavors and fragrances account for 0.5% of the total weight.
[0040] In the embodiment, non-woven fabric serves as an adsorbing medium in the fragrance
strengthening segment 2, a fragrance substance prepared by a Maillard reaction intermediate
is added, and the addition amount accounts for 0.1% of the total weight of the tobacco
segment.
[0041] According to the novel cigarette structure prepared in the embodiment, the tobacco
vapor temperature of the cigarette can be reduced obviously, and the fragrance, generated
by Maillard reaction, of the tobacco is obvious, and the fragrance strengthening effect
is obvious and is coordinated with the tobacco vapor.
Embodiment V
[0042] FIG. 5 is a novel cigarette containing a fragrance strengthening segment provided
by the disclosure, the novel cigarette comprises a tobacco segment 1, the fragrance
strengthening segment 2, a flue gas reflux segment and a filter tip segment which
are connected in sequence, the filter tip segment consists of a solid filter tip 10
and a hollow filter tip 11, wherein the solid filter tip 10 is connected with the
flue gas reflux segment, and the hollow filter tip 11 is positioned at the outermost
end.
[0043] Wherein, the flue gas reflux segment in the embodiment is the same as the flue gas
reflux segment in the embodiment IV, and the air inlet openings 12 are in the forms
of horn mouths, so that the draw resistance can be reduced obviously.
[0044] In the embodiment, the tobacco segment 1 consists of tobacco shreds, tobacco sheets,
an atomizing agent, a tobacco extract, a non-tobacco extract and tobacco flavors and
fragrances, wherein the tobacco shreds account for 65% of the total weight, the tobacco
sheets account for 15% of the total weight, the auxiliary material accounts for 1%
of the total weight, the atomizing agent consists of glycerinum and ethylene glycol
in the mass ratio of 3: 2 and accounts for 15% of the total weight, the tobacco extract
and the non-tobacco extract account for 3.5% of the total weight, and the tobacco
flavors and fragrances account for 0.5% of the total weight.
[0045] In the embodiment, non-woven fabric serves as an adsorbing medium in the fragrance
strengthening segment 2, a fragrance substance prepared by a mint ester substance
is added, and the addition amount accounts for 0.2% of the total weight of the tobacco
segment.
[0046] According to the novel cigarette structure prepared in the embodiment, the tobacco
vapor temperature of the cigarette can be reduced obviously, and the precursor-flavor
substances such as mint esters can be heated to decompose flavor substances with mint
flavor, so that the taste of the smoke vapor is improved.
[0047] The foregoing descriptions are merely specific embodiments of the disclosure, but
are not intended to limit the protection scope of the disclosure. Any variation or
replacement readily figured out by a person skilled in the art within the technical
scope disclosed in the disclosure shall fall within the protection scope of the disclosure.
Therefore, the protection scope of the disclosure shall be subject to the protection
scope of the claims.
1. A novel cigarette with reduced tobacco vapor temperature and improved taste comprising
a tobacco segment and a filter tip segment, characterized by comprising a flue gas reflux segment arranged between the tobacco segment and the
filter tip segment; an air inlet opening communicating with the tobacco segment is
provided on a part of the flue gas reflux segment adjacent to the tobacco segment;
an air outlet opening communicating with the filter tip segment is provided on a part
of the flue gas reflux segment adjacent to the filter tip segment; a plurality of
air flow baffles are provided from top to bottom within the flue gas reflux segment
in an alternating arrangement to create a serpentine flue gas reflux path; one end
of the flue gas reflux path communicates with the air inlet opening, and the other
end of the flue gas reflux path is connected to the air outlet opening; tobacco vapor
enters the air inlet opening and passes through the flue gas reflux path; the length
of a flue gas reflux path of the flue gas reflux segment is increased; the temperature
of flue gas is reduced by means of heat exchange of a hot air flow with the air flow
baffles and the inner wall of the flue gas reflux segment.
2. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to claim 1, characterized in that an air inlet opening is provided on the upper side and the lower side of the flue
gas reflux segment adjacent to the tobacco segment respectively, the flue gas reflux
segment is provided with two flue gas reflux branched paths, the inlet of each flue
gas reflux branched path corresponds to one air inlet opening, and the air outlet
opening communicates with the outlets of the two flue gas reflux branched paths respectively.
3. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to claim 1, characterized in that an air inlet opening is provided on a part of the flue gas reflux segment adjacent
to the tobacco segment, an air outlet opening is provided on a part of the flue gas
reflux segment adjacent to the filter tip segment vertically respectively, the flue
gas reflux path is provided with two flue gas reflux branched paths, the inlet of
each flue gas reflux branch path corresponds to the air inlet opening, and the outlet
of each flue gas reflux branch path corresponds to one air outlet opening.
4. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to claim 1, characterized in that the novel cigarette also comprises a fragrance strengthening segment between the
tobacco segment and the flue gas reflux segment, the fragrance strengthening segment
is internally provided with a tobacco flavor fragile capsule or an adsorbent carrier
and flavors and fragrances adsorbed onto the adsorbent carrier, or the adsorbent carrier
is paved on the surface layers of the air flow baffles, and the adsorbent carrier
is adsorbed with the flavors and fragrances.
5. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to claim 4, characterized in that the adsorbent carrier is made from foam metals, plastic materials, molecular sieves,
polypropylene, active carbon, Dacron, nylon fiber, porous ceramics, non-woven fabrics,
carbon fiber, natural cellulose fiber or cellulose derivative fiber.
6. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to claim 1, characterized in that the tobacco segment consists of tobacco shreds, tobacco sheets, an atomizing agent,
an auxiliary material, a tobacco extract and tobacco flavors and fragrances, the tobacco
shreds account for 40% to 90% of the total weight of the tobacco product, the tobacco
sheets account for 5% to 50% of the total weight of the tobacco product, the atomizing
agent accounts for 2% to 35% of the total weight of the tobacco product, the auxiliary
material accounts for 0 to 10% of the total weight of the tobacco product, the tobacco
extract accounts for 0.1% to 20% of the total weight of the tobacco product, and the
tobacco flavors and fragrances account for 0.01% to 8% of the total weight of the
tobacco product.
7. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to claim 6, characterized in that the tobacco shreds account for 50% to 80% of the total weight of the tobacco product,
the tobacco sheets account for 10% to 40% of the total weight of the tobacco product,
the atomizing agent accounts for 5% to 30% of the total weight of the tobacco product,
the auxiliary material accounts for 0.5% to 8% of the total weight of the tobacco
product, the tobacco extract accounts for 0.5% to 15% of the total weight of the tobacco
product, and the tobacco flavors and fragrances account for 0.05% to 5% of the total
weight of the tobacco product.
8. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to any one of claims 1 to 3, characterized in that the air inlet opening is designed in the shape of a horn mouth.
9. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to claim 1, characterized in that flue gas reflux segment accounts for 1/6 to 2/3 of the cigarette length of the whole
novel cigarette.
10. The novel cigarette with reduced tobacco vapor temperature and improved taste according
to claim 1, characterized in that the cigarette length of the novel cigarette is 35 to 100 mm, and the outer diameter
of the cigarette is 3 to 12 mm.