CN109924539B - Forming paper capable of automatically regulating and controlling ventilation rate, filter tip, cigarette and preparation and application thereof - Google Patents
Forming paper capable of automatically regulating and controlling ventilation rate, filter tip, cigarette and preparation and application thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of cigarette filters, and particularly discloses a cigarette filter capable of automatically regulating and controlling ventilation rate, which comprises a filter stick, a piece of wrap paper wrapping the periphery of the filter stick, and tipping paper covering the surface of the wrap paper, wherein the wrap paper is provided with a phase change area, and the phase change area is coated with a phase change material; the tipping paper covers the area of phase transition district is the ventilation zone, the ventilation zone is provided with a plurality of ventilation holes. The invention also discloses preparation and application of the cigarette filter, and in addition, provides a cigarette comprising the cigarette filter. The cigarette filter automatically regulates and controls the filter ventilation along with the cigarette smoking progress, namely the filter ventilation rate is zero in the initial smoking stage of the cigarette, the filter ventilation is realized only 2-3 times before the smoking is finished, the purposes of reducing harm and tar of cigarette smoke are achieved, the smoke temperature and the smoke concentration are reduced in the last 2-3 times smoking process, the burning sense is eliminated, and the consistency and the stability of the whole cigarette smoking style are realized.
Description
Technical Field
The invention belongs to the field of design and processing of cigarette filters, and particularly relates to a cigarette filter material.
Background
Cigarette filters have become important media for reducing tar and harm of cigarettes, and a great deal of research work with great efficiency is carried out on the aspects of cigarette filter material and structure inside and outside the industry. The cigarette filter realizes the interception and filtration of harmful components in smoke mainly through the direct interception, inertial collision and diffusion deposition of aerosol particles, which are closely related to the physical properties and the structure of the filter and the temperature distribution of the cigarette filter. In the process of smoking 2-3 last mouths of cigarettes, the smoke concentration and the smoke temperature are increased, wherein the concentration of total material phase substances and harmful substances in the smoke is obviously higher than that of the smoke of the front 1-4 mouths, the smoke temperature of the filter tip can reach 70-80 ℃ at most, and the smoke temperature of the filter tip even reaches over 100 ℃ in a deep smoking mode, so that the excessively high smoke temperature and concentration not only affect the interception effect of the filter tip on harmful ingredients in the smoke, but also can generate burning sensation, affect the consistency and stability of the smoking style of the whole cigarette, and reduce the satisfaction degree of consumers on the sensory quality of the smoke. Therefore, the smoke temperature in the cigarette filter can play a key role in the filter interception efficiency and the sensory quality. The filter tip is used for ventilating, diluting, reducing harm and reducing tar, and is widely applied to cigarette products. The filter tip ventilation can utilize the heat exchange of environment normal atmospheric temperature air and flue gas in the filter tip when diluting the flue gas, reduces the filter tip temperature. However, smoke constituents tend to increase from mouth to mouth during smoking of a cigarette, and during the initial smoking period, the filter is ventilated and diluted to cause the smoke flavor components to be too low to affect the taste.
In the prior art, various functional additives are mostly added into cigarette filter sticks in order to reduce the temperature and harmful components of cigarettes. Taking the reduction of the temperature of the last three mouths of cigarettes as an example, the method reported in the prior art is mainly characterized in that phase-change materials are added into cigarette filter sticks; for example, chinese patent publication No. CN105996121A discloses a filter stick additive capable of releasing functional substances through phase change. Chinese patent publication No. CN 104263321A discloses a composite phase-change material capable of regulating and controlling the smoke temperature of a cigarette filter, which is obtained by loading sodium sulfate decahydrate and sodium tetraborate decahydrate on expanded graphite through co-crystallization under the action of sodium polyacrylate. Further, as disclosed in chinese patent publication No. CN104449586A, an organic/inorganic composite phase change material capable of regulating and controlling the smoke temperature of cigarette filters is disclosed. In the prior art, the purpose of cooling a filter tip is usually realized by adding a phase-change material into a filter stick, and the sensory quality of cigarettes is influenced to a certain extent; furthermore, it is difficult to dilute the concentration of the harmful substance in the last few mouths. Furthermore, if the cigarette filter is kept well ventilated all the time, for example, a large ventilation is provided at the early stage of smoking, the smoking taste will be greatly influenced.
Disclosure of Invention
In order to overcome the technical problems in the prior art, the invention provides a cigarette filter capable of automatically regulating and controlling the ventilation rate, and aims to provide a cigarette filter capable of automatically regulating and controlling the temperature of the last three mouths of smoking and diluting harmful substances by adopting a physical method.
The second purpose of the invention is to provide a preparation method of the cigarette filter.
The third purpose of the invention is to provide the application of the cigarette filter.
The fourth purpose of the invention is to provide a cigarette with the cigarette filter.
A cigarette filter capable of automatically regulating and controlling ventilation rate comprises a filter stick, a piece of wrapping paper wrapping the periphery of the filter stick, and tipping paper covering the surface of the wrapping paper, wherein the wrapping paper is provided with a phase change area, and the phase change area is coated with a phase change material; the area of the tipping paper covering the phase change area is a ventilation area, and the ventilation area is provided with a plurality of ventilation holes (also called ventilation holes in the invention).
According to the cigarette filter, the phase change area coated with the phase change material is arranged in the plug wrap, and the tipping paper is arranged on the periphery of the plug wrap, wherein the tipping paper covered above the phase change area is provided with a plurality of ventilation holes (namely, the position of the plug wrap coated with the phase change material is superposed with the punching position of the tipping paper); under normal conditions (under the condition that the phase change material layer does not change phase), the ventilation holes are sealed by the phase change material layer. In the process of suction, particularly in the last three openings, the temperature enables the material of the phase change material layer to change phase, so that the ventilation holes are automatically opened, fresh air enters through the ventilation holes, the fresh air can effectively reduce the suction temperature of the last three openings, and is also beneficial to diluting harmful components of mainstream smoke. The cigarette filter realizes the cooling and harm reduction by a pure physical method; effectively avoids the defects caused by adding various additives into the filter stick fiber, and has simple structure and easy production and preparation.
The cigarette filter automatically regulates and controls the filter ventilation along with the cigarette smoking progress, namely the filter ventilation rate is zero in the initial smoking stage of the cigarette, 2-3 mouths are only before the smoking is finished, the mainstream smoke is high, the phase change of the phase change material compounded on the forming paper is promoted, the ventilation of ventilation pores is realized, the filter ventilation is realized, the purposes of reducing harm and tar of the cigarette smoke are achieved, the smoke temperature and the smoke concentration are reduced in the last 2-3 mouths of smoking, the burning sensation is eliminated, and the consistency and the stability of the whole cigarette smoking style are realized.
The tipping paper is laminated to the plug paper by means of an adhesive compound applied to the area outside the ventilation zone.
The adhesive material is arranged in the area between the forming paper and the tipping paper except for the ventilation area (or the phase change area). Therefore, on one hand, the tipping paper covers the surface of the forming paper, and in addition, the ventilation of the gaps between the tipping paper and the forming paper fibers except for the ventilation area can be closed; further improving the automatic ventilation effect of the cigarette filter; for example, the mellow flavor in the early stage of smoking can be sufficiently maintained, the concentration of harmful ingredients in the last 2-3 mouths can be reduced, and the burning sensation can be eliminated.
Both surfaces of the formed paper may be allowed to be coated with phase change material.
Preferably, the phase change material is compounded on any surface of the forming paper.
Preferably, the phase change material is compounded on the surface of the plug wrap, which faces the filter plug, namely the back surface of the plug wrap (between the filter plug wrap and the plug wrap). In this way, the influence of the filter forming process on the coating area is further reduced.
The surface of the plug wrap may be coated, in whole or in part, with a phase change material. Preferably, the phase change material is coated on a partial area of the forming paper.
Further preferably, the phase change material is compounded on the end of the forming paper close to the tobacco shred.
The phase change region can be provided with one or more than one.
Preferably, the phase change region is arranged along the periphery of the cigarette filter. The ventilation zone is arranged on the periphery of the cigarette filter, which is close to the tobacco end, so that the ventilation zone is helpful to reduce the suction resistance, further reduce the suction temperature of the last three mouths and reduce the concentration of harmful substances.
Further preferably, the development plane of the phase change region is rectangular and is preferably close to the tobacco shred end.
Preferably, the width of the phase change region is 3-20 mm. The width of the phase change region refers to the length of the phase change region in the axial direction (length direction) of the cigarette filter.
Preferably, the ventilation area of the tipping paper is an area corresponding to the phase change area of the molding paper, and the arrangement width of the ventilation holes is 3-20 mm.
In the invention, the forming paper is high-transparency forming paper.
Preferably, the molding paper has an air permeability of not less than 3000 CU.
More preferably, the air permeability of the molding paper is 3000-50000 CU.
The tipping paper is used for automatically adjusting the main stream smoke through the ventilation area and the phase change area, and is also used for receiving and installing the tobacco rod. For example, the tipping paper may include an over-wrapped portion and a portion for receiving the tobacco rod, the ventilation zone being provided at the base of the over-wrapped portion (near the end of the tobacco rod).
The tipping paper is laminated to the plug paper by means of an adhesive compound applied to the area outside the ventilation zone. Therefore, the ventilation of the area of the forming paper which is not coated with the phase change material can be avoided.
The adhesive material can be adhesive glue commonly used in the field of cigarettes.
Preferably, the tipping paper is provided with an air permeability of the ventilation area of not less than 300 CU.
Preferably, the air permeability of the vent hole area of the tipping paper is 300-1000 CU.
Preferably, the phase change material is an organic phase change material.
The phase change material is preferably a coatable organic phase change material. The organic phase-change material is converted from a solid state to a liquid state after the temperature reaches the phase-change temperature, so that the ventilation effect of an open ventilation area is achieved. The phase change material does not relate to the loss and conversion of crystal water, and mainly aims to reduce the barrier effect of a phase change layer on a ventilation area so as to lead fresh air to be introduced from ventilation holes.
Preferably, the phase change temperature of the phase change material is 30-70 ℃.
Further preferably, the phase change temperature of the phase change material is 35-50 ℃.
Further preferably, the phase change material includes, but is not limited to, at least one of polyether phase change material, paraffin phase change material, carboxylate phase change material, polyol phase change material, n-alkanol phase change material, and sugar alcohol phase change material.
Further preferably, the polyether phase change material includes, but is not limited to, at least one of polyethylene glycol and polytetramethylene glycol.
The paraffin phase-change material comprises at least one of refined paraffin and straight-chain paraffin.
The carboxylate phase-change material includes, but is not limited to, butyl stearate.
The polyol-based phase change material includes, but is not limited to, neopentyl glycol.
The n-alkanols include, but are not limited to, 1-tetradecanol.
The sugar alcohol includes but is not limited to at least one of mannitol and erythrose.
Preferably, the coating thickness of the phase change material is 20 to 200 μm.
The invention relates to a preferable filter tip capable of automatically regulating and controlling ventilation rate, which comprises a filter stick and tipping paper, wherein the filter stick is wrapped by high-permeability plug wrap paper, the periphery of the filter stick is wrapped by a layer of tipping paper for receiving cigarettes, ventilation holes are distributed at proper positions of the tipping paper, the surface of the plug wrap paper at the positions corresponding to the ventilation holes of the tipping paper is covered by a phase-change material, so that the ventilation rate of the filter tip is zero, the glue is not applied to a tipping paper punching area in the cigarette rolling process, the temperature of smoke in the filter tip is gradually increased along with the gradual approach of a combustion cone to the filter tip end in the cigarette smoking process, the phase-change material covered on the plug wrap paper is melted, ambient air enters the filter stick through the holes of the tipping paper and the high-permeability plug wrap paper, and the ventilation. The invention utilizes the heat of the smoke to melt the phase-change material covered on the surface of the plug wrap paper and regulates and controls the air permeability of the plug wrap paper, thereby realizing the automatic regulation and control of the ventilation rate of the filter tip.
The invention provides a preparation method of a cigarette filter tip capable of automatically regulating and controlling ventilation rate, wherein a phase-change material is coated on the surface of a piece of plug wrap paper to form a phase-change area; then the mixture is compounded on the surface of the filter stick;
punching holes in the tipping paper to form ventilation holes; and coating adhesive material on the unperforated area of the tipping paper to be compounded on the surface of the forming paper, wherein the ventilation hole area covers the outer surface of the phase change area.
Another preparation method of the present invention comprises the following steps:
step (1): coating a phase change material on the surface of the forming paper; then the mixture is compounded on the surface of the filter stick; then compounding tipping paper with ventilation holes on the surface of the tipping paper to prepare the cigarette filter tip capable of automatically ventilating;
step (2): and (2) splicing the cigarette filter which is prepared in the step (1) and can automatically ventilate with a conventional cigarette filter (the surface of the filter stick is coated with the plug wrap paper, and then the periphery of the plug wrap paper is coated with the tipping paper to prepare the conventional filter stick) to prepare the cigarette filter.
The preparation method is simple and easy for industrial scale-up production; and the prepared material has stable and excellent performance.
The vent hole can be formed by a conventional method, preferably by a laser drilling method.
The invention also provides application of the cigarette filter capable of automatically regulating and controlling the ventilation rate, and the cigarette filter is connected with a tobacco rod to prepare the cigarette capable of automatically regulating and controlling the ventilation rate. The tipping method can adopt the conventional method.
The invention also comprises a cigarette which is connected with the cigarette filter capable of automatically regulating and controlling the ventilation rate.
Preferred cigarettes, including cigarette filters, and tobacco rods; the cigarette filter comprises a filter stick, a piece of wrapping paper wrapping the filter stick and tipping paper wrapping the piece of wrapping paper and used for tipping the cigarette stick; the molding paper is provided with a phase change area, and the phase change area is coated with a phase change material; the tipping paper covers the area of phase transition district is the ventilation zone, the ventilation zone be provided with a plurality of ventilation holes.
In the invention, under the normal condition (before phase change of the phase change material), the ventilation holes on the periphery of the cigarette filter are sealed by the phase change material and the adhesive glue for the composite tipping paper, and the ventilation rate on the periphery of the filter is 0; when the last 2-3 mouths of the smoking are smoked, the temperature of the main stream smoke is higher, the phase change of the phase change material is promoted, the ventilation holes in the phase change area are opened, fresh air is introduced from the ventilation holes, the concentration of harmful ingredients in the main stream smoke is reduced through the fresh air, and in addition, the temperature of the main stream smoke of the last few mouths can be reduced.
Has the advantages that:
the phase change material is coated on the surface of the plug wrap paper at the position corresponding to the ventilation hole of the cigarette tipping paper for the first time, the phase state of the phase change material is influenced by different smoke temperatures in the cigarette smoking process, the air permeability of the plug wrap paper is regulated and controlled, and the automatic regulation and control of the ventilation rate of the filter tip in the cigarette smoking process are realized. In the last 2-3 smoking processes of the cigarette, the smoke temperature and the smoke concentration in the cigarette filter are effectively reduced, the burning feeling is eliminated, the consistency and the stability of the smoking style of the whole cigarette are kept, and the release amount of various harmful substances in the smoke is obviously reduced.
Drawings
FIG. 1 is a high-transparency paper;
FIG. 2 is a surface of a high-transmittance molding paper coated with a phase-change material; in fig. 2, the gray areas represent the coating with the phase change material, and the ventilation holes in the gray areas are closed by the phase change material;
FIG. 3 is a diagram illustrating that the phase-change material coated on the surface of the high-transmittance forming paper is melted by the heat of smoke; in fig. 3, the ventilation holes in the grey zone are open;
FIG. 4 is a schematic cross-sectional view of a filter
In FIGS. 1 to 4, 1, the holes of the tipping paper are arranged (ventilation zone); 2. tipping paper; 3. coating the phase-change material (phase-change area) of the high-transmittance forming paper; 4. high-transparency forming paper; 5. a cigarette filter stick; 6. cigarette (tobacco rod).
FIG. 5 is a graph showing the results of measuring the smoke temperature of the filter according to example 1; wherein the temperature profile at the upper part is the control temperature profile.
Detailed Description
The following examples are intended to illustrate the invention without further limiting its scope.
Example 1
Taking tipping paper with the width of 33mm, and performing laser drilling (two rows) in a drilling area 9mm away from one end of the tipping paper, wherein the width of the drilling area is 5mm, the distance between two rows of holes is 3mm, and the air permeability of the obtained drilling tipping paper is 700 CU; taking a proper amount of phase change material polyethylene glycol (PEG-2000; phase change temperature 43 ℃) to heat and melt at a constant temperature of 80 ℃ in a feeding tank of a compound machine, loading high-permeability forming paper (with the air permeability of 10000CU) into a coating machine, coating the phase change material on the high-permeability forming paper (the coating area is shown in figure 2), enabling the air permeability of the forming paper in the coating area to be zero, preparing a filter stick (the side coated with the phase change material faces the filter stick) from the forming machine coated with the phase change material, rolling and connecting cigarettes on a cigarette making machine by using the prepared filter stick and perforated tipping paper, wherein the perforating end of the tipping paper is connected with the cigarettes, and the phase change material coating area on the forming paper is not glued and is overlapped with the perforating area of the tipping paper. During the smoking process of the cigarette, the ventilation rate of the filter tip and the release amount of harmful components in the mainstream smoke of the prepared cigarette are detected, the results are shown in tables 1 and 2, and the detection result of the smoke temperature of the filter tip is shown in FIG. 5. The results show that the total number of the smoking openings of the cigarette is 7, the ventilation rate of the filter tip is 0 in the first 4 smoking processes, and the ventilation rate of the filter tip is 8.0%, 20.2% and 23.8% in the last three smoking processes respectively; in the whole cigarette smoking process, the smoke temperature of the cigarette filter is below 40 ℃, and the maximum smoke temperature in the filter of the non-ventilated filter compared with the cigarette sample can reach 80-90 ℃; the detection result of harmful components in the mainstream smoke shows that compared with a non-ventilated filter control cigarette sample, the release amount of harmful components such as nicotine, phenol, crotonaldehyde, CO, benzopyrene, ammonia, nitrosamine and the like in the mainstream smoke of the cigarette sample with the ventilated filter is obviously reduced, and the reduction rate is 15-22%. The results show that the phase-change material PEG is coated on the surface of the plug wrap at the part corresponding to the cigarette tipping paper punching, so that the automatic regulation and control of the ventilation rate of the filter in the cigarette smoking process can be realized, and the smoke temperature in the cigarette filter and the release amount of harmful ingredients in the mainstream smoke can be effectively reduced.
TABLE 1 automatic control of Filter Ventilation Rate and Filter maximum Smoke temperature in Ventilation Filter cigarette sample puff-by-puff smoking
TABLE 2 automatic control of harmful ingredient release amount of mainstream smoke mouth by mouth for ventilated filter cigarette samples
Example 2
Taking tipping paper with the width of 33mm, and performing laser drilling (four rows) in a drilling area 9mm away from one end of the tipping paper, wherein the width of the drilling area is 5mm, the distance between four rows of holes is 1mm, and the air permeability of the obtained drilling tipping paper is 1000 CU; taking a proper amount of phase change material polyethylene glycol (PEG-4000; phase change temperature 47 ℃) to heat and melt at a constant temperature of 80 ℃ in a feeding tank of a compound machine, loading high-permeability forming paper (with the air permeability of 6000CU) into a coating machine, coating the phase change material on the high-permeability forming paper (the coating area is shown in figure 2), enabling the air permeability of the forming paper in the coating area to be zero, preparing a filter stick on a filter stick forming machine by using the forming paper coated with the phase change material, rolling and connecting cigarettes on a cigarette making machine by using the prepared filter stick and perforated tipping paper, connecting the perforated end of the tipping paper with cigarettes, and enabling the phase change material coating area on the forming paper not to be glued and to coincide with the perforated area of the tipping paper. During the smoking process of the cigarette, the ventilation rate of the filter tip and the release amount of harmful components in the mainstream smoke of the prepared cigarette are detected, and the results are shown in tables 3 and 4. The results show that the total number of the smoking openings of the cigarette is 7, the ventilation rate of the filter tip is 0 in the first 4 smoking processes, and the ventilation rate of the filter tip is respectively 9.0%, 20.2% and 25.8% in the last three smoking processes; in the whole cigarette smoking process, the smoke temperature of the cigarette filter is below 40 ℃, and the maximum smoke temperature in the filter of the non-ventilated filter compared with the cigarette sample can reach 80-90 ℃; the detection result of harmful components in the mainstream smoke shows that compared with a non-ventilated filter control cigarette sample, the release amount of harmful components such as nicotine, phenol, crotonaldehyde, CO, benzopyrene, ammonia, nitrosamine and the like in the mainstream smoke of the cigarette sample with the ventilated filter is obviously reduced, and the reduction rate is 15-22%. The results show that the phase change material PEG is coated on the surface of the plug wrap at the part corresponding to the cigarette tipping paper punching, so that the automatic regulation and control of the ventilation rate of the filter tip in the cigarette smoking process can be realized, and the release amount of harmful ingredients in the mainstream smoke can be effectively reduced.
TABLE 3 Filter Ventilation Rate and Filter maximum Smoke temperature in the automatic control of Ventilation Filter cigarette samples puff by puff
TABLE 4 automatic control of harmful ingredient release amount of mainstream smoke mouth by mouth for ventilated filter cigarette samples
Example 3
Taking tipping paper with the width of 33mm, and performing laser drilling (two rows) in a drilling area 9mm away from one end of the tipping paper, wherein the width of the drilling area is 5mm, the distance between two rows of holes is 1mm, and the air permeability of the obtained drilling tipping paper is 500 CU; taking a proper amount of phase change material polyethylene glycol (PEG-4000) to be heated and melted at a constant temperature of 80 ℃ in a feeding tank of a compound machine, loading high-permeability forming paper (with the air permeability of 16000CU) into a coating machine, coating the phase change material on the high-permeability forming paper (the coating area is shown in figure 2), enabling the air permeability of the forming paper in the coating area to be zero, preparing a filter stick from the forming paper coated with the phase change material on a filter stick forming machine, then rolling and connecting cigarettes on a cigarette making machine by using the prepared filter stick and perforated tipping paper, connecting the perforated end of the tipping paper with the cigarettes, and enabling the phase change material coating area on the forming paper not to be glued and to be overlapped with the perforated area of the tipping paper. During the smoking process of the cigarette, the ventilation rate of the filter tip and the release amount of harmful components in the mainstream smoke of the prepared cigarette were measured, and the results are shown in tables 5 and 6. The results show that the total number of the smoking openings of the cigarette is 7, the ventilation rate of the filter tip is 0 in the first 4 smoking processes, and the ventilation rate of the filter tip is 7.8%, 20.4% and 23.5% in the last three smoking processes respectively; in the whole cigarette smoking process, the smoke temperature of the cigarette filter is below 40 ℃, and the maximum smoke temperature in the filter of the non-ventilated filter compared with the cigarette sample can reach 80-90 ℃; the detection result of harmful components in the mainstream smoke shows that compared with a non-ventilated filter control cigarette sample, the release amount of harmful components such as nicotine, phenol, crotonaldehyde, CO, benzopyrene, ammonia, nitrosamine and the like in the mainstream smoke of the cigarette sample with the ventilated filter is obviously reduced, and the reduction rate is 15-22%. The results show that the phase change material PEG is coated on the surface of the plug wrap at the part corresponding to the cigarette tipping paper punching, so that the automatic regulation and control of the ventilation rate of the filter tip in the cigarette smoking process can be realized, and the release amount of harmful ingredients in the mainstream smoke can be effectively reduced.
TABLE 5 automatic control of Filter Ventilation Rate and Filter maximum Smoke temperature during Vent Filter cigarette sample puff-by-puff smoking
TABLE 6 automatic control of harmful ingredient release amount of mainstream smoke of ventilated filter cigarette sample
Example 4
Taking tipping paper with the width of 33mm, and performing laser drilling (four rows) in a drilling area 9mm away from one end of the tipping paper, wherein the width of the drilling area is 10mm, the distance between four rows of holes is 2mm, and the air permeability of the obtained drilling tipping paper is 700 CU; taking a proper amount of phase change material polyethylene glycol (20% PEG-1000+ 80% PEG-4000; the phase change temperatures are respectively 30 ℃ and 47 ℃) to heat and melt at a constant temperature of 80 ℃ in a feeding tank of a compound machine, loading high-permeability forming paper (the air permeability is 6000CU) into a coating machine, coating the phase change material on the high-permeability forming paper (the coating area is shown in figure 2), enabling the air permeability of the forming paper in the coating area to be zero, preparing a filter stick on the filter stick forming machine by using the forming paper coated with the phase change material, rolling and connecting cigarettes on a cigarette making machine by using the prepared filter stick and perforated tipping paper, wherein the perforating end of the tipping paper is connected with the cigarettes, and the phase change material coating area on the forming paper is not glued and is overlapped with the perforating area of the tipping paper. The prepared cigarettes were tested for filter ventilation and release of harmful constituents of mainstream smoke during smoking, and the results are shown in tables 7 and 8. The results show that the total number of the smoking openings of the cigarette is 7, the ventilation rate of the filter tip is 0 in the first 4 smoking processes, and the ventilation rate of the filter tip is 8.8%, 20.6% and 25.2% in the last three smoking processes respectively; in the whole cigarette smoking process, the smoke temperature of the cigarette filter is below 40 ℃, and the maximum smoke temperature in the filter of the non-ventilated filter compared with the cigarette sample can reach 80-90 ℃; the detection result of harmful components in the mainstream smoke shows that compared with a non-ventilated filter control cigarette sample, the release amount of harmful components such as nicotine, phenol, crotonaldehyde, CO, benzopyrene, ammonia, nitrosamine and the like in the mainstream smoke of the cigarette sample with the ventilated filter is obviously reduced, and the reduction rate is 15-22%. The results show that the phase change material PEG is coated on the surface of the plug wrap at the part corresponding to the cigarette tipping paper punching, so that the automatic regulation and control of the ventilation rate of the filter tip in the cigarette smoking process can be realized, and the release amount of harmful ingredients in the mainstream smoke can be effectively reduced.
TABLE 7 Filter Ventilation Rate and Filter maximum Smoke temperature in the automatic control of Ventilation Filter cigarette samples puff by puff
TABLE 8 automatic control of harmful ingredient release amount of mainstream smoke mouth by mouth for ventilated filter cigarette samples
Example 5
Taking tipping paper with the width of 33mm, and performing laser drilling (two rows) in a drilling area 9mm away from one end of the tipping paper, wherein the width of the drilling area is 5mm, the distance between two rows of holes is 3mm, and the air permeability of the obtained drilling tipping paper is 700 CU; taking a proper amount of phase change material eicosane (phase change temperature is 37 ℃) to be heated and melted at a constant temperature of 80 ℃ in a feeding tank of a compound machine, loading high-permeability forming paper (with the air permeability of 10000CU) into a coating machine, coating the phase change material on the high-permeability forming paper (the coating area is shown in figure 2), enabling the air permeability of the forming paper in the coating area to be zero, preparing a filter stick from the forming paper coated with the phase change material on a filter stick forming machine, then rolling and connecting cigarettes on a cigarette making machine by using the prepared filter stick and perforated tipping paper, connecting the perforated end of the tipping paper with cigarettes, and enabling the coating area of the phase change material on the forming paper not to be glued and to be overlapped with the perforated area of the tipping paper. During the smoking process of the cigarettes, the ventilation rate of the filter, the smoke temperature of the filter and the release amount of harmful components in the mainstream smoke of the prepared cigarettes are detected, and the results are shown in tables 9 and 10. The results show that the total number of the smoking openings of the cigarette is 7, the ventilation rate of the filter tip is 0 in the first 4 smoking processes, and the ventilation rate of the filter tip is 8.2%, 21.3% and 24.0% in the last three smoking processes respectively; in the whole cigarette smoking process, the highest smoke temperature of the cigarette filter is below 35 ℃, and the highest smoke temperature in the filter of the non-ventilated filter as a control cigarette sample can reach 80-90 ℃; the detection result of harmful components in the mainstream smoke shows that compared with a non-ventilated filter control cigarette sample, the release amount of harmful components such as nicotine, phenol, crotonaldehyde, CO, benzopyrene, ammonia, nitrosamine and the like in the mainstream smoke of the cigarette sample with the ventilated filter is obviously reduced, and the reduction rate is 15-22%. The results show that the phase-change material alkane is coated on the surface of the plug wrap paper at the part corresponding to the cigarette tipping paper punching, so that the automatic regulation and control of the ventilation rate of the filter in the cigarette smoking process can be realized, and the smoke temperature in the cigarette filter and the release amount of harmful ingredients in the mainstream smoke can be effectively reduced.
TABLE 9 automatic control of Filter Ventilation Rate and Filter maximum Smoke temperature during Vent Filter cigarette sample puff-by-puff smoking
TABLE 10 automatic control of harmful ingredient release amount of mainstream smoke mouth by mouth for ventilated filter cigarette samples
Example 6
Taking tipping paper with the width of 33mm, and performing laser drilling (four rows) in a drilling area 9mm away from one end of the tipping paper, wherein the width of the drilling area is 5mm, the distance between four rows of holes is 1mm, and the air permeability of the obtained drilling tipping paper is 1000 CU; taking a proper amount of phase change material octadecane (with the phase change temperature of 28 ℃) to be heated and melted at the constant temperature of 80 ℃ in a feeding tank of a compound machine, loading high-permeability forming paper (with the air permeability of 6000CU) into a coating machine, coating the phase change material on the high-permeability forming paper (the coating area is shown in figure 2), enabling the air permeability of the forming paper in the coating area to be zero, preparing a filter stick from the forming paper coated with the phase change material on a filter stick forming machine, then rolling and connecting cigarettes on a cigarette making machine by using the prepared filter stick and perforated tipping paper, connecting the perforated end of the tipping paper with cigarettes, and enabling the phase change material coating area on the forming paper not to be glued and to be overlapped with the perforated area of the tipping paper. During the smoking process of the cigarette, the prepared cigarette was tested for filter ventilation rate, smoke temperature and harmful component release of mainstream smoke, and the results are shown in tables 11 and 12. The results show that the total number of the smoking openings of the cigarette is 7, the ventilation rate of the filter tip is 0 in the first 4 smoking processes, and the ventilation rate of the filter tip is 8.0%, 19.2% and 23.8% in the last three smoking processes respectively; in the whole cigarette smoking process, the highest smoke temperature of the cigarette filter is below 35 ℃, and the highest smoke temperature in the filter of the non-ventilated filter as a control cigarette sample can reach 80-90 ℃; the detection result of harmful components in the mainstream smoke shows that compared with a non-ventilated filter control cigarette sample, the release amount of harmful components such as nicotine, phenol, crotonaldehyde, CO, benzopyrene, ammonia, nitrosamine and the like in the mainstream smoke of the cigarette sample with the ventilated filter is obviously reduced, and the reduction rate is 15-22%. The results show that the phase-change material alkane is coated on the surface of the plug wrap paper at the part corresponding to the cigarette tipping paper punching, so that the automatic regulation and control of the ventilation rate of the filter tip in the cigarette smoking process can be realized, and the release amount of harmful ingredients in mainstream smoke can be effectively reduced.
TABLE 11 automatic control of Filter Ventilation Rate and Filter maximum Smoke temperature during Vent Filter cigarette sample puff-by-puff smoking
TABLE 12 automatic control of harmful ingredient release amount of mainstream smoke mouth by mouth for ventilated filter cigarette samples
Example 7
Taking tipping paper with the width of 33mm, and performing laser drilling (two rows) in a drilling area 9mm away from one end of the tipping paper, wherein the width of the drilling area is 5mm, the distance between two rows of holes is 1mm, and the air permeability of the obtained drilling tipping paper is 500 CU; taking a proper amount of phase change material (10% octadecane and 90% eicosane; the phase change temperatures are respectively 28 ℃ and 37 ℃) to heat and melt at a constant temperature of 80 ℃ in a feeding tank of a compound machine, loading high-permeability forming paper (the air permeability is 16000CU) into a coating machine, coating the phase change material on the high-permeability forming paper (the coating area is shown in figure 2), enabling the air permeability of the forming paper in the coating area to be zero, preparing a filter stick on the forming machine of the filter stick coated with the phase change material, rolling and connecting cigarettes on a cigarette making machine by using the prepared filter stick and perforated tipping paper, connecting the perforated end of the tipping paper with the cigarettes, and enabling the coating area of the phase change material on the forming paper not to be glued and to be superposed with the perforated area of the tipping paper. During the smoking process of the cigarette, the prepared cigarette was tested for filter ventilation rate, filter smoke temperature and release of harmful components of mainstream smoke, and the results are shown in tables 13 and 14. The results show that the total number of the smoking openings of the cigarette is 7, the ventilation rate of the filter tip is 0 in the first 4 smoking processes, and the ventilation rate of the filter tip is 7.7%, 20.6% and 23.7% in the last three smoking processes respectively; in the whole cigarette smoking process, the highest smoke temperature of the cigarette filter is below 35 ℃, and the highest smoke temperature in the filter of the non-ventilated filter as a control cigarette sample can reach 80-90 ℃; the detection result of harmful components in the mainstream smoke shows that compared with a non-ventilated filter control cigarette sample, the release amount of harmful components such as nicotine, phenol, crotonaldehyde, CO, benzopyrene, ammonia, nitrosamine and the like in the mainstream smoke of the cigarette sample with the ventilated filter is obviously reduced, and the reduction rate is 15-22%. The results show that the phase-change material alkane is coated on the surface of the plug wrap paper at the part corresponding to the cigarette tipping paper punching, so that the automatic regulation and control of the ventilation rate of the filter tip in the cigarette smoking process can be realized, and the release amount of harmful ingredients in mainstream smoke can be effectively reduced.
TABLE 13 automatic control of Filter Ventilation Rate and Filter maximum Smoke temperature during Vent Filter cigarette sample puff-by-puff smoking
TABLE 14 automatic control of harmful ingredient release amount of mainstream smoke mouth by mouth for ventilated filter cigarette samples
Example 8
Taking tipping paper with the width of 33mm, and performing laser drilling (four rows) in a drilling area 9mm away from one end of the tipping paper, wherein the width of the drilling area is 10mm, the distance between four rows of holes is 2mm, and the air permeability of the obtained drilling tipping paper is 700 CU; taking a proper amount of phase change material (40% octadecane and 60% eicosane) to heat and melt at a constant temperature of 80 ℃ in a feeding tank of a compound machine, loading high-permeability forming paper (with the air permeability of 50000CU) into a coating machine, coating the phase change material on the high-permeability forming paper (the coating area is shown in figure 2), enabling the air permeability of the forming paper in the coating area to be zero, preparing a filter stick from the forming paper coated with the phase change material on a filter stick forming machine, rolling and connecting cigarettes on a cigarette making machine by using the prepared filter stick and perforated tipping paper, wherein the perforated end of the tipping paper is connected with cigarettes, and the phase change material coating area on the forming paper is not glued and is overlapped with the perforated area of the tipping paper. During the smoking process of the cigarette, the prepared cigarette was tested for filter ventilation rate, filter smoke temperature and release of harmful components of mainstream smoke, and the results are shown in tables 15 and 16. The results show that the total number of the cigarette suction openings is 7, the ventilation rate of the filter tip is 0 in the first 4 suction openings, and the ventilation rate of the filter tip is 8.9%, 20.6% and 25.4% in the last three suction openings respectively; in the whole cigarette smoking process, the highest smoke temperature of the cigarette filter is below 35 ℃, and the highest smoke temperature in the filter of the non-ventilated filter as a control cigarette sample can reach 80-90 ℃; the detection result of harmful components in the mainstream smoke shows that compared with a non-ventilated filter control cigarette sample, the release amount of harmful components such as nicotine, phenol, crotonaldehyde, CO, benzopyrene, ammonia, nitrosamine and the like in the mainstream smoke of the cigarette sample with the ventilated filter is obviously reduced, and the reduction rate is 15-22%. The results show that the phase-change material alkane is coated on the surface of the plug wrap paper at the part corresponding to the cigarette tipping paper punching, so that the automatic regulation and control of the ventilation rate of the filter tip in the cigarette smoking process can be realized, and the release amount of harmful ingredients in mainstream smoke can be effectively reduced.
TABLE 15 automatic control of filter ventilation rate and maximum filter smoke temperature during puff-by-puff smoking of ventilated filter cigarette samples
TABLE 16 automatic control of harmful ingredient release amount of mainstream smoke mouth by mouth for ventilated filter cigarette samples
The embodiment shows that the cigarette filter with the novel structure effectively reduces the temperature of the last three smoke mouths by a pure physical method, and is favorable for reducing the concentration of harmful components in smoke, particularly in the last three main smoke mouths.
Claims (20)
1. A cigarette filter capable of automatically regulating and controlling ventilation rate comprises a filter stick, a piece of wrap paper wrapping the periphery of the filter stick, and tipping paper covering the surface of the wrap paper, and is characterized in that the wrap paper is provided with a phase change area, and the phase change area is coated with a phase change material; the area of the tipping paper covering the phase change area is a ventilation area, and the ventilation area is provided with a plurality of ventilation holes;
before the phase change of the phase-change material, the ventilation hole of the ventilation area is closed by the phase-change material, and after the phase change of the phase-change material, the ventilation hole of the ventilation area is opened.
2. The cigarette filter capable of automatically controlling ventilation according to claim 1, wherein the tipping paper is compounded on the plug wrap by an adhesive material applied to an area other than the ventilation area.
3. The cigarette filter capable of automatically regulating ventilation rate according to claim 1, characterized in that the phase change material is compounded on any surface of the plug wrap.
4. The cigarette filter capable of automatically regulating and controlling ventilation rate according to claim 3, characterized in that the phase-change material is compounded on the surface of the plug wrap facing the filter rod.
5. The cigarette filter capable of automatically controlling ventilation rate according to claim 1, wherein the phase change material is compounded on the end of the plug wrap near the tobacco rod.
6. The cigarette filter capable of automatically controlling ventilation according to claim 5, wherein the phase transition region is provided along the outer circumference of the cigarette filter.
7. The cigarette filter capable of automatically controlling ventilation rate of claim 6, wherein the development plane of the phase change region is rectangular.
8. The cigarette filter capable of automatically controlling ventilation rate of claim 7, wherein the width of the phase transition region is 3-20 mm.
9. The cigarette filter with the ventilation automatically regulated and controlled according to claim 1, wherein the air permeability of the plug wrap is more than or equal to 3000 CU.
10. The cigarette filter with the ventilation rate automatically regulated and controlled according to claim 1, wherein the ventilation degree of the ventilation area of the tipping paper is more than or equal to 300 CU.
11. The cigarette filter capable of automatically regulating and controlling the ventilation rate according to any one of claims 1 to 10, wherein the phase-change material is an organic phase-change material.
12. The cigarette filter capable of automatically regulating and controlling the ventilation rate of claim 11, wherein the phase-change temperature of the phase-change material is 30-70 ℃.
13. The cigarette filter capable of automatically regulating and controlling ventilation rate according to claim 12, wherein the phase-change temperature of the phase-change material is 35-50 ℃.
14. The cigarette filter capable of automatically regulating ventilation rate according to claim 12, wherein the phase change material includes, but is not limited to, at least one of polyether phase change material, paraffin phase change material, carboxylic ester phase change material, polyol phase change material, and n-alkanol phase change material.
15. The cigarette filter capable of automatically regulating ventilation rate according to claim 14,
the polyether phase change material comprises at least one of polyethylene glycol and polytetramethylene glycol;
the paraffin phase-change material comprises at least one of refined paraffin and straight-chain paraffin;
the carboxylic ester phase-change material comprises but is not limited to butyl stearate;
the polyol phase-change material comprises at least one of neopentyl glycol, mannitol and erythritol;
the n-alkanol phase change material includes but is not limited to 1-tetradecanol.
16. The cigarette filter capable of automatically regulating and controlling the ventilation rate of claim 15, wherein the phase-change material is at least one of polyethylene glycol 1000-4000, eicosane and octadecane.
17. The cigarette filter capable of automatically regulating the ventilation rate of claim 11, wherein the coating thickness of the phase-change material is 20-100 μm.
18. The preparation method of the cigarette filter tip with the ventilation rate automatically regulated and controlled according to any one of claims 1 to 17, characterized in that a phase change material is coated on the surface of the plug wrap paper to form a phase change area; then the mixture is compounded on the surface of the filter stick;
punching holes in the tipping paper to form ventilation holes; coating adhesive materials on the non-perforated area of the tipping paper to enable the tipping paper to be compounded on the surface of the forming paper, wherein the ventilation hole area covers the outer surface of the phase change area;
or the preparation method comprises the following steps:
step (1): coating a phase change material on the surface of the forming paper; then the mixture is compounded on the surface of the filter stick; then compounding tipping paper with ventilation holes on the surface of the tipping paper to prepare the cigarette filter tip capable of automatically ventilating;
step (2): and (2) splicing the cigarette filter which is prepared in the step (1) and can automatically ventilate with a conventional cigarette filter to prepare the cigarette filter.
19. The application of the cigarette filter tip with the ventilation rate automatically regulated and controlled according to any one of claims 1 to 17, wherein the cigarette filter tip is connected with a tobacco rod to prepare a cigarette with the ventilation rate automatically regulated and controlled.
20. A cigarette connected with the cigarette filter tip capable of automatically regulating and controlling ventilation rate according to any one of claims 1 to 17.
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| CN110419773B (en) * | 2019-07-24 | 2022-04-29 | 广东中烟工业有限责任公司 | Filter tip and cigarette of variable air volume |
| CN114532588A (en) * | 2022-03-17 | 2022-05-27 | 湖北中烟工业有限责任公司 | Cigarette filter stick master batch and cigarette filter stick |
| CN115316704A (en) * | 2022-07-18 | 2022-11-11 | 云南中烟工业有限责任公司 | Cigarette punching method with adjustable ventilation rate |
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