CN114081205A - Efficient tar-reducing cigarette filter tip and preparation method and application thereof - Google Patents
Efficient tar-reducing cigarette filter tip and preparation method and application thereof Download PDFInfo
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- CN114081205A CN114081205A CN202111434707.XA CN202111434707A CN114081205A CN 114081205 A CN114081205 A CN 114081205A CN 202111434707 A CN202111434707 A CN 202111434707A CN 114081205 A CN114081205 A CN 114081205A
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
The application discloses a cigarette filter tip for efficiently reducing tar, a preparation method and an application thereof, wherein the cigarette filter tip comprises the following components: the smoke inlet, the smoke outlet, the outer shell and the inner shell are sleeved in the outer shell, the outer shell comprises a first outer shell and a second outer shell which are connected, a cavity between the first outer shell and the inner shell forms a first smoke channel, a cavity in the second outer shell forms a second smoke channel, one end of the inner shell is connected with one end of the first outer shell through a connecting surface, the smoke inlet is arranged on the connecting surface and is communicated with the first smoke channel, the smoke outlet is communicated with the second smoke channel, and an air inlet is formed in the side wall of the second outer shell; the smoke sequentially passes through the smoke inlet and the first smoke channel, is mixed with the air flowing in from the air inlet in the second smoke channel, and finally flows out of the filter tip through the smoke outlet.
Description
Technical Field
The application relates to a cigarette filter tip capable of efficiently reducing tar, a preparation method and application thereof, and belongs to the technical field of tobacco.
Background
At present, a variety of cigarette products exist in the market, and generally, a common heating non-combustion electronic cigarette comprises an aerosol generation substrate formed by tobacco shreds for generating composite aerosol and a filter tip for filtering out partial harmful substances in the composite aerosol.
At present, in order to improve the filtering effect, the outer shell of the filter tip is often filled with a highly adsorptive material such as activated carbon and the like as a core body, so that although more harmful substances can be filtered to a certain extent, the filtering capability is improved, and the overall absorption resistance of the filter tip is also enhanced; in addition, due to the supporting effect of the core, in the process of smoking, the existence of the core can cause the stress change of the outer shell, further cause the deformation condition and improve the suction resistance, so in order to reduce the deformation condition of the outer shell, the outer shell of the filter tip is generally required to be made of hard materials, however, the hard materials cause poor user experience feeling, and the suction resistance is increased due to the difficulty in completely avoiding the deformation condition; in the production process, the core body and the shell body need to be assembled independently, the process is complicated, and automatic production cannot be realized.
In order to solve the above problems, chinese patent CN109938401 by the applicant proposes an aerosol generating device which can reduce the suction resistance, but the effect of reducing tar and harm is still to be improved.
Disclosure of Invention
In order to solve the problems, the application provides a cigarette filter tip with high-efficiency tar reduction, and a preparation method and application thereof. The filter tip for cigarette can greatly reduce the suction resistance, ensure a certain smoke concentration and keep the fragrance components; in addition, harmful substances such as tar and the like in the smoke are greatly reduced, the concentration of carbon monoxide in the smoke can be effectively reduced, and the temperature of the smoke can be reduced.
According to one aspect of the application, a high-efficiency tar-reducing cigarette filter is provided, which comprises: the smoke inlet, the smoke outlet, the outer shell and the inner shell are sleeved in the outer shell, the outer shell comprises a first outer shell and a second outer shell which are connected, a cavity between the first outer shell and the inner shell forms a first smoke channel, a cavity in the second outer shell forms a second smoke channel, one end of the inner shell is connected with one end of the first outer shell through a connecting surface, the smoke inlet is arranged on the connecting surface and is communicated with the first smoke channel, the smoke outlet is communicated with the second smoke channel, and an air inlet is formed in the side wall of the second outer shell;
the smoke sequentially passes through the smoke inlet and the first smoke channel, is mixed with the air flowing in from the air inlet in the second smoke channel, and finally flows out of the filter tip through the smoke outlet.
Optionally, the ratio of the distance between the center of the air inlet and the smoke outlet to the length of the outer housing is (0.2-0.6): 1.
optionally, the ratio of the area of the air inlet to the smoke inlet is (50-650): 1, preferably (100- & ltSUB & gt 400-): 1.
optionally, the ratio of the area of the smoke outlet to the area of the smoke inlet is (55-145): 1, preferably 126.7: 1.
optionally, the end of the inner shell far away from the smoke inlet is a closed end, a buffer chamber is formed inside the inner shell, and the smoke inlet is arranged at the connecting position between the connecting surface and the inner shell.
Optionally, the ratio of the length of the inner shell to the outer shell is (0.3-0.7): 1, preferably 0.5: 1.
Optionally, the ratio of the inner diameter of the outer shell to the width of the first flue gas channel is (3-8): 1, preferably 5.39: 1.
According to another aspect of the present application, there is provided a composite material for use in the preparation of a tobacco rod filter as defined in any one of the preceding claims, comprising: 30-50 parts of styrene block copolymer, 15-30 parts of polypropylene, 30-40 parts of mineral oil and 0.2-0.7 part of antioxidant.
Preferably, the composite material comprises: 42 parts of styrene block copolymer, 22.5 parts of polypropylene, 35 parts of mineral oil and 0.5 part of antioxidant.
Alternatively, the styrenic block copolymer is selected from a styrene-ethylene-propylene-styrene block copolymer or a styrene-ethylene-butadiene-styrene block copolymer, preferably a styrene-ethylene-butadiene-styrene block copolymer.
Optionally, the mineral oil is selected from at least one of white oil, pine tar and paraffin oil, preferably paraffin oil.
Optionally, the antioxidant is selected from at least one of 2, 6-di-tert-butyl-p-cresol, 4' -di-tert-octyldiphenylamine and pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], preferably pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
By adding the styrene segmented copolymer, the stability is high, the requirement on the forming temperature is low, the plasticity is good, the flowability is excellent, and the processability is good; and excellent in low temperature resistance.
By adding polypropylene, the transparency is improved, and the polypropylene composite material has low density, good processability, excellent impact resistance and excellent chemical corrosion resistance.
The low temperature resistance of the filter is improved by adding mineral oil with high dissolving capacity, which has excellent compatibility with other components.
By adding antioxidant, the antioxidant reacts with other components to crosslink, and the antioxidant degradation capability of the filter tip in the processes of manufacturing, processing, storing and applying is improved.
According to yet another aspect of the present application, there is provided a method of making a filter for smoking comprising the steps of:
(1) melting raw materials, wherein the raw materials are the composite material;
(2) injection molding: injecting the melted raw materials into a mould by using injection molding equipment, and cooling and molding after pressure maintaining to obtain the cigarette filter tip, wherein the temperature of a charging barrel of the injection molding equipment is at least divided into two sections.
Optionally, the feeding temperature of the charging barrel in the injection molding equipment is 160-; and/or
The injection pressure of the injection molding equipment is 1.5-4.5MPa, the pressure maintaining pressure is 50-70% of the injection pressure, and the back pressure is 0.3-1.1 MPa; and/or
The cooling time does not exceed 10 s.
The temperature of each position of the charging barrel in the injection molding equipment is controlled, so that the fluidity and viscosity of the melted material are ensured, the processability of the material is good, and the defects of cracks, internal stress or cold residual marks and the like in the processed filter tip are avoided.
By controlling the injection pressure of the injection molding equipment, the uniform wall thickness and density of each part of the filter tip are ensured, the internal stress is reduced, and the molding period is shortened; the density uniformity of the filter tip is further ensured by controlling the pressure maintaining pressure, and the shrinkage rate of the filter tip can be reduced; by controlling the back pressure, the gas in the melted material is reduced, and the quality of the filter tip is improved.
According to a further aspect of the present application there is provided a cigarette comprising a connected smoking portion for producing smoke and a filter selected from the filters of any of the above.
Wherein, the cigarette can be a traditional cigarette or a cigarette which is not burnt by heating.
Benefits that can be produced by the present application include, but are not limited to:
1. according to the cigarette filter tip, the first smoke channel and the second smoke channel are both of the cavity structure, smoke enters the filter tip and flows out of the filter tip after passing through the cavity structure, so that the suction resistance is greatly reduced, a certain smoke concentration can be ensured, and aroma components are reserved; the first smoke channel is formed between the first outer shell and the inner shell, and the smoke inlet is communicated with the first smoke channel, so that smoke collides with the shell wall when flowing through the first smoke channel to generate aerosol deposition, and harmful substances such as tar and the like in the smoke are greatly reduced; in addition, an air inlet is formed in the side wall of the second outer shell, so that the smoke and the air are fully mixed in the second smoke channel, the smoke can be diluted, the concentration of carbon monoxide in the smoke is effectively reduced, the air inlet can further reduce the suction resistance and can reduce the temperature of the smoke, and the temperature is reduced, so that particulate matters in the smoke are further deposited on the inner wall of the second smoke channel, and harmful substances in the smoke are further reduced.
2. The composite material of the cigarette filter tip has good fluidity and formability after melting, is easy to perform injection molding, has a wider temperature application range (-30 ℃ to 80 ℃), cannot deform under the action of high-temperature smoke, has good elasticity of the processed filter tip, and can be directly used in a cigarette making machine without deformation.
3. The preparation method of the filter tip for the cigarette has the advantages of injection molding and integral forming, simple preparation process, no need of secondary assembly and high production efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic view of a cigarette filter according to an embodiment of the present invention.
List of parts and reference numerals:
1. a smoke inlet; 2. a smoke outlet; 3. an outer housing; 4. an inner housing; 5. a first flue gas channel; 6. a second flue gas channel; 7. an air inlet.
Detailed Description
In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The cigarette filter with high efficiency and reduced tar in the present application can be applied to any cigarette, such as an electronic cigarette, a traditional cigarette, etc., without limitation, and the following examples illustrate the cigarette without burning by heating, but are not limited to this type.
Example 1
As shown in fig. 1, example 1 of the present application discloses a high-efficiency tar-reduction filter for cigarettes, which includes: the smoke inlet 1, the smoke outlet 2, the outer shell 3 and the inner shell 4 sleeved in the outer shell 3, the outer shell 3 comprises a first outer shell and a second outer shell which are connected, a cavity between the first outer shell and the inner shell 4 forms a first smoke channel 5, a cavity in the second outer shell forms a second smoke channel 6, one end of the inner shell 4 is connected with one end of the first outer shell through a connecting surface, the smoke inlet 1 is arranged on the connecting surface and is communicated with the first smoke channel 5, the smoke outlet 2 is communicated with the second smoke channel 6, and the side wall of the second outer shell is provided with an air inlet 7; the smoke passes through the smoke inlet 1 and the first smoke channel 5 in sequence, is mixed with the air flowing in from the air inlet 7 in the second smoke channel 6, and finally flows out of the filter tip through the smoke outlet 2.
By arranging the first smoke channel 5 and the second smoke channel 6 to be of cavity structures, smoke enters the filter tip and flows out of the filter tip after passing through the cavity structures, so that the suction resistance is greatly reduced, a certain smoke concentration can be ensured, and aroma components are kept; by arranging the first flue gas channel 5 between the first outer shell and the inner shell 4 and communicating the flue gas inlet 1 with the first flue gas channel 5, the flue gas collides with the shell wall when flowing through the first flue gas channel 5 to generate aerosol deposition, thereby greatly reducing harmful substances in the flue gas, such as tar and the like; in addition, through seted up air inlet 7 at the lateral wall of second shell body, make flue gas and air fully mix in second flue gas passageway 6, can dilute the flue gas, effectively reduce the concentration of carbon monoxide in the flue gas, air inlet 7 can also further reduce the resistance to suction, and can reduce the flue gas temperature, and the temperature reduction makes the further deposit of particulate matter in the flue gas on the inner wall of second flue gas passageway 6, further reduces the harmful substance in the flue gas.
The resistance to draw in this embodiment refers to the resistance to draw when a user draws smoke.
Specifically, the shape of the air inlet 7 is not limited in this embodiment, and may be, for example, a triangle, a quadrangle, a pentagon, a hexagon, a circle, or an ellipse, as long as the air can enter. Specifically, the shape of air inlet 7 is oval, and the shaping degree of difficulty is low, and the drawing of patterns is easy, and can be higher with laser drilling position overlap ratio, guarantees into the air quantity to further guarantee to reduce and inhale and hinder, coke-reducing and cooling effect.
Specifically, the outer shell 3 is a cylinder matched with the existing cigarette.
Specifically, the shape of the inner housing 4 in this embodiment is not limited as long as the first flue gas channel 5 can be formed with the first outer housing, and may be, for example, a cylinder, a prism, a pyramid, or the like, where the inner housing 4 in this embodiment is a cylinder.
As an embodiment, the ratio of the distance between the center of the air inlet 7 and the smoke outlet 2 to the length of the outer case 3 is (0.2-0.6): 1. preferably 0.4: 1. through setting up the position of air inlet 7, avoid air inlet 7 to influence the tar reduction effect apart from fuming section too closely, prevent simultaneously that air inlet 7 from reducing the air inlet volume or can't advance the air apart from 2 too closely of outlet flue, and lead to inhaling to hinder too big, the cooling effect is poor and harmful substance content is higher phenomenon.
Specifically, the length of the outer casing 3 is 3 to 200mm, preferably 3 to 30mm, and more preferably 14mm, and the distance between the center of the air inlet 7 and the smoke outlet 2 is 0.1 to 14mm, and preferably 5.6 mm.
In one embodiment, the ratio of the area of the air inlet 7 to the area of the smoke inlet 1 is (50-650): 1, preferably 100-: 1. through controlling the proportion between air inlet 7 and the inlet 1, and then the proportion between the air of control entering oral cavity and the flue gas, guarantee the air to the tar and the cooling effect of flue gas, prevent that the flue gas temperature is too high, guarantee the concentration of flue gas and the richness of fragrance simultaneously, promote user's suction and experience.
Specifically, the area of the air inlet 7 is 4.5-60mm2Preferably 47.1mm2The area of the smoke inlet 1 is 0.09-1mm2Preferably 0.18mm2。
Specifically, the present embodiment does not limit the opening or closing of the end of the inner casing 4 away from the smoke inlet 1. When the mouth is open, the smoke enters the first smoke channel 5 through the smoke inlet 1, and then enters the mouth of the user after being discharged from the smoke outlet 2 through the second smoke channel 6 under the action of suction force.
As an embodiment, the position of the smoke inlet 1 is not limited in this embodiment, as long as the smoke generated in the smoking segment can be guided to the filter.
As an embodiment, one end of the inner shell 4 away from the smoke inlet 1 is a closed end, a buffer chamber is formed inside the inner shell 4, and the smoke inlet 1 is arranged at the connection between the first outer shell and the inner shell 4. Keep away from the one end of advancing cigarette mouth 1 through setting up interior casing 4 and be the blind end, and advance the junction of cigarette mouth 1 setting between first shell body and interior casing 4, can make partial flue gas get into first flue gas passageway 5 through advancing cigarette mouth 1 again after the circulation in the surge chamber, the setting of surge chamber can change the flue gas route, reduce the flue gas temperature, avoid flue gas temperature too high, can make the deposit of grain looks thing in the flue gas in the surge chamber simultaneously, increase the effect of reducing the burnt harm.
As a preferred embodiment, one end of the inner housing 4 is connected with one end of the first outer housing through a connecting surface, and the smoke inlet 1 is arranged at the connecting position of the connecting surface and the inner housing 4. The arrangement mode increases the opening area of the smoke inlet 1, increases the smoke inlet amount, and simultaneously changes the smoke path, so that part of smoke firstly enters the buffer chamber and then enters the first smoke channel 5 through the smoke inlet 1, further improves the tar and harm reduction effect, and simultaneously reduces the temperature of the smoke; in addition, the air in the buffer chamber can also dilute the flue gas, and the concentration of carbon monoxide in the flue gas is reduced.
Specifically, the number of the smoke inlets 1 is not limited in this embodiment. Preferably, the number of the smoke inlets 1 is 2, and the two smoke inlets 1 are symmetrically distributed at the connecting position of the connecting surface and the inner shell 4.
As an embodiment, the shape of the smoke inlet 1 is not limited in this embodiment, and may be, for example, a triangle, a quadrangle, a circle or an ellipse, as long as the smoke can enter the filter through the smoke inlet 1. Specifically, the smoke inlet 1 is a square with a side length of 0.424 mm.
As an embodiment, the ratio of the length of the inner shell 4 to the outer shell 3 is (0.3-0.7): 1. preferably 0.5: 1. Through setting up the length ratio of interior casing 4 and shell body 3, and then coordinate the proportion between first flue gas passageway 5 and the second flue gas passageway 6, prevent that first flue gas passageway 5 is short and lead to falling burnt effect poor, avoid simultaneously influencing the mixed effect between flue gas and the air because of second flue gas passageway 6 is short, can't play the effect that reduces and inhale the resistance.
In particular, the length of the inner shell 4 is 0.9-13mm, preferably 7 mm.
As an embodiment, the ratio of the inner diameter of the outer shell 3 to the width of the first flue gas channel 5 is (3-8): 1, preferably 5.39: 1. the width of the first flue gas channel 5 has an important influence on tar removal rate, the larger the width is, the lower the impact effect of flue gas on the inner wall of the first flue gas channel 5 is, so that the removal effect of harmful substances is not ideal, and when the width of the first flue gas channel 5 is too small, the impact distance between the flue gas and the first flue gas channel 5 is shortened, namely the flow path of the first flue gas channel 5 is shortened, the tar reduction effect is also influenced, and in addition, the suction resistance is increased; therefore, the present embodiment can reduce the suction resistance by controlling the width of the first flue gas channel 5, and at the same time, can reduce harmful substances such as tar in the flue gas to the maximum extent, thereby improving the tar removal rate.
Specifically, the inner diameter of the outer shell 3 is 3-8mm, preferably 5.39mm, the wall thickness of the outer shell 3 is 1mm, the width of the first flue gas channel 5 is 1mm, and the wall thickness of the inner shell 4 is 1 mm.
In one embodiment, the ratio of the area of the smoke outlet 2 to the area of the smoke inlet 1 is (55-145): 1, preferably (90-130): 1, more preferably 126.7: 1. through setting up the area ratio of advancing cigarette mouth 1 and outlet flue 2 to guarantee into cigarette volume and play cigarette volume, promote the user and smoke and experience.
Specifically, the shape and position of the smoke outlet 2 are not limited in this embodiment, as long as the smoke can flow out from the filter. For example, the smoke outlet 2 may be provided at one end of the outer case 3, or may be provided at a side portion of the outer case 3, and when the smoke outlet 2 is provided at one end of the outer case 3, the one end may be entirely opened, or may be partially opened.
In one embodiment, the end of the outer housing 3 remote from the mouthpiece 1 is open to form the mouthpiece 2. Keep away from the whole openings of one end of advancing cigarette mouth 1 through setting up shell body 3 to guarantee the flue gas volume, promote the user and aspirate and experience.
Example 2
Example 2 of the present application provides an electronic cigarette comprising a smoking portion for producing smoke and a filter selected from the filters of example 1 connected together.
Example 3
Example 3 provides a method of making a filter for a cigarette, the filter for a cigarette being the filter of example 1, the method comprising the steps of:
(1) melting raw materials, wherein the raw materials comprise 42 parts of styrene-ethylene-butadiene-styrene block copolymer, 22.5 parts of polypropylene, 35 parts of paraffin oil and 0.5 part of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester;
(2) injection molding, injecting the molten raw materials into a mold by using injection molding equipment, keeping the pressure, cooling and molding to obtain the cigarette filter tip,
wherein the mold temperature is 25 ℃, the feeding temperature of a charging barrel in the injection molding equipment is 170 ℃, the front section temperature is 180 ℃, the rear section temperature is 190 ℃, the nozzle temperature is 210 ℃, the injection pressure is 3MPa, the pressure maintaining pressure is 1.8MPa, the back pressure is 0.7MPa, and the cooling time is not more than 10 s.
TABLE 1
In addition, the raw materials of the filter are changed to respectively prepare a filter D4# -D6#, wherein the raw materials of D4# comprise 64.5 parts of styrene-ethylene-butadiene-styrene block copolymer, 35 parts of paraffin oil and 0.5 part of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, and the rest conditions are the same as the filter 1 #;
the raw material of D5# comprises 42 parts of styrene-ethylene-butadiene-styrene block copolymer, 22.5 parts of polypropylene and 0.5 part of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, and the rest conditions are the same as those of the filter tip 1 #;
the raw material of D6# was 42 parts of polystyrene, 22.5 parts of polypropylene, 35 parts of paraffin oil and 0.5 part of pentaerythritol tetrakis- [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], with the remaining conditions being the same as those of Filter No. 1 #.
Examples of the experiments
The smoke temperature, tar reduction efficiency, CO reduction efficiency and suction resistance of the smoke outlet 2 of the filter tip 1# -7#, D1# -D3# in example 3 were respectively tested according to the following test methods, and the test results are shown in Table 2:
flue gas temperature at the flue gas outlet 2: the outlet temperature was measured using a thermocouple plug-in.
Coke reduction efficiency: the cigarette with the traditional general acetate fiber filter tip is taken as a first sample, the cigarette with the filter tip in the embodiment 3 is taken as a second sample, the first sample and the second sample are respectively sucked by utilizing the existing rotary disc type smoking machine, and the tar yield is tested, wherein the tar reduction efficiency is (sample two tar yield-sample one tar yield)/sample one tar yield.
CO reduction efficiency: the cigarette with the traditional general acetate fiber filter tip is taken as a first sample, the cigarette with the filter tip in the embodiment 3 is taken as a second sample, the first sample and the second sample are respectively sucked by using the existing rotary disc type smoking machine, the CO content is tested, and the CO reduction efficiency is (the amount of the second sample CO-the amount of the first sample CO)/the amount of the first sample CO.
Absorbing resistance: the detection is carried out through a traditional cigarette comprehensive test bench.
TABLE 2
As can be seen from Table 2, the filter tip prepared by the method has moderate smoke temperature, is suitable for suction, has high tar reduction efficiency and CO reduction efficiency, and greatly reduces harmful substances in smoke; and the suction resistance is low, and the suction experience is good.
In addition, the filter tip 1# -7# and the filter tip D1# -D3# have stable performance and stable aperture in the processing process, and can not generate peculiar smell in the suction process and deform after being sucked; and the filter tip D4# -D5# has unstable pore diameter in the processing process, poor processing performance, peculiar smell in the suction process and poor suction experience, and the deformation phenomenon appears after the suction, which shows that the temperature resistance is poor.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A high-efficiency tar-reducing filter tip for cigarettes is characterized by comprising: the smoke inlet, the smoke outlet, the outer shell and the inner shell are sleeved in the outer shell, the outer shell comprises a first outer shell and a second outer shell which are connected, a cavity between the first outer shell and the inner shell forms a first smoke channel, a cavity in the second outer shell forms a second smoke channel, one end of the inner shell is connected with one end of the first outer shell through a connecting surface, the smoke inlet is arranged on the connecting surface and is communicated with the first smoke channel, the smoke outlet is communicated with the second smoke channel, and an air inlet is formed in the side wall of the second outer shell;
the smoke sequentially passes through the smoke inlet and the first smoke channel, is mixed with the air flowing in from the air inlet in the second smoke channel, and finally flows out of the filter tip through the smoke outlet.
2. A filter for cigarettes according to claim 1, wherein the ratio of the distance between the centre of the air inlet and the smoke outlet to the length of the outer housing is (0.2-0.6): 1, preferably 0.4: 1.
3. A filter for tobacco rod as claimed in claim 1, wherein the ratio of the area of the air inlet to the area of the tobacco inlet is (50-650): 1, preferably (100- & ltSUB & gt 400-): 1; and/or
The ratio of the area of the smoke outlet to the area of the smoke inlet is (55-145): 1, preferably 126.7: 1.
4. a filter tip as claimed in any one of claims 1 to 3, wherein the end of the inner shell remote from the smoke inlet is closed, a buffer chamber is formed inside the inner shell, and the smoke inlet is arranged at the junction between the connecting surface and the inner shell.
5. A filter for cigarettes according to claim 6, characterised in that the ratio of the lengths of the inner and outer shells is (0.3-0.7): 1, preferably 0.5: 1.
6. A filter for cigarettes according to any one of claims 1 to 3, characterised in that the ratio of the internal diameter of the outer housing to the width of the first smoke channel is (3-8): 1, preferably 5.39: 1.
7. A composite material for the preparation of a filter for cigarettes according to any one of claims 1 to 6, characterized in that it comprises: 30-50 parts of styrene block copolymer, 15-30 parts of polypropylene, 30-40 parts of mineral oil and 0.2-0.7 part of antioxidant;
preferably, the composite material comprises 42 parts of styrene-ethylene-butadiene-styrene block copolymer, 22.5 parts of polypropylene, 35 parts of paraffin oil and 0.5 part of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
8. A method of making a filter for a cigarette, comprising the steps of:
(1) melting raw materials, wherein the raw materials are the composite material of claim 7;
(2) injection molding: injecting the melted raw materials into a mould by using injection molding equipment, and cooling and molding after pressure maintaining to obtain the cigarette filter tip, wherein the temperature of a charging barrel of the injection molding equipment is at least divided into two sections.
9. The method as claimed in claim 8, wherein the feeding temperature of the charging barrel in the injection molding device is 160-; and/or
The injection pressure of the injection molding equipment is 1.5-4.5MPa, the pressure maintaining pressure is 50-70% of the injection pressure, and the back pressure is 0.3-1.1 MPa; and/or
The cooling time does not exceed 10 s.
10. A cigarette comprising a smoking portion for producing smoke and a filter selected from the filters of any of claims 1 to 6 attached thereto.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111434707.XA CN114081205A (en) | 2021-11-29 | 2021-11-29 | Efficient tar-reducing cigarette filter tip and preparation method and application thereof |
| PCT/CN2022/073785 WO2023092854A1 (en) | 2021-11-29 | 2022-01-25 | High-efficiency tar-reducing cigarette filter, and preparation method therefor and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111434707.XA CN114081205A (en) | 2021-11-29 | 2021-11-29 | Efficient tar-reducing cigarette filter tip and preparation method and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114081205A true CN114081205A (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111434707.XA Pending CN114081205A (en) | 2021-11-29 | 2021-11-29 | Efficient tar-reducing cigarette filter tip and preparation method and application thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114081205A (en) |
| WO (1) | WO2023092854A1 (en) |
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| CN103315398A (en) * | 2012-03-19 | 2013-09-25 | 上海灼焱电子科技有限公司 | Efficient tar oil filtering cigarette holder |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2023092854A1 (en) | 2023-06-01 |
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