JP2021535736A - Variable air volume filter and cigarettes - Google Patents

Abstract

The present invention discloses a variable air volume filter and a cigarette. The filter includes a filter element and a coating layer enclosing the filter element, the filter element includes a smoke suction end and a smoke emission end, and the coating layer is provided with a phase change ventilation region and a phase change ventilation region. The phase change ventilation region is provided with a plurality of first ventilation holes, the non-phase change ventilation region is provided with a plurality of second ventilation holes, and the outside air is provided in the first ventilation hole and the second ventilation hole. A starch tube is provided in the portion of the inside of the filter element near the smoke suction end, and a phase is provided inside the first vent. The change material is filled, and the phase change temperature range of the phase change material is 45 to 60 ° C. The present invention also discloses a cigarette using the above filter. The present invention may be smoked by a combustion method or may be smoked by a heating non-combustion method. [Selection diagram] Fig. 3

Description

The present invention relates to the field of designing and processing a cigarette filter, and more specifically to a variable air volume filter and a cigarette.

As a smoking method for cigarettes, the chopped tobacco may be burned by a method of igniting with a direct flame, or the chopped tobacco may be baked by a non-combustion method to emit smoke. Smoke may be emitted by any method, and the smoke is filtered through a filter and then sucked into the human body.

Current filter designs often consider only meeting a single requirement, for example, either burning or non-burning smoking. However, there is a need for the user to burn and inhale smoke, and there is also a need for non-combustion type to inhale smoke. In such a case, the conventional filter design cannot meet the user's needs and is used. It brings inconvenience to the person.

In the prior art, improvements to the filter are also not limited to a single smoking scheme, eg, in Chinese Patent Document No. 2012172766369.09, a highly transparent material is applied between the filter rod and the tipping paper. By providing sex paper, the air volume is automatically changed. However, even with the design of such a structure, only automatic adjustment is possible when burning and inhaling smoke. To meet the ever-increasing consumer needs, a filter that can be applied to both the burning smoking method and the heated non-burning smoking method is required.

The technical problem mainly to be solved by the present invention is to provide a variable air flow filter in view of the fact that there is no cigarette that can be applied to both the combustion smoking method and the heated non-burning smoking method in the prior art. Is.

Another technical problem to be solved by the present invention is to provide a cigarette using the variable air volume filter.

Specifically, the technical proposal adopted by the present invention in order to solve the above technical problems is as follows.

It is a variable air flow filter,
It comprises a filter element and a coating layer surrounding the filter element, wherein the filter element includes a smoke inhalation end and a smoke emission end.
The coating layer is provided with a phase change ventilation region and a non-phase change ventilation region, a plurality of first ventilation holes are provided in the phase change ventilation region, and a plurality of second ventilation regions are provided in the non-phase change ventilation region. Vents are provided,
External air passes through the coating layer through each of the first vent and the second vent to reach a part of the filter element.
The inside of the first vent is filled with a phase change material.
A starch tube is provided in the portion of the inside of the filter element near the smoke suction end.
The range of the phase change temperature of the phase change material is 45 to 60 ° C.

In the present invention, the coating layer is provided with a phase change ventilation region and a non-phase change ventilation region, and a first ventilation hole and a second ventilation hole are provided in each of the phase change ventilation region and the non-phase change ventilation region. The inside of the first ventilation hole is filled with a phase change material to become a selective ventilation region that can be automatically opened in response to a change in temperature, and the non-phase change ventilation region is a general ventilation region. When the heated non-combustion smoking method is used, the temperature of the smoke emission end becomes extremely high, which melts the phase change material, at which time the first vent is automatically opened and the air volume is increased. , The temperature of the smoke that is inhaled drops. When smoking by the combustion method, the temperature at the smoke emission end is low and does not affect smoking.

In the present invention, the starch tube has a good temperature lowering effect, but has a certain supporting effect, and a cigarette can be easily inserted, especially when a heated non-burning smoking method is used.

As a preferred embodiment of the present invention, the phase change aeration region is close to the smoke suction end, or the non-phase change aeration region is close to the smoke suction end.

As a preferred technique, the phase change aeration region is close to the smoke inhalation end, or the non-phase change aeration region is close to the smoke inhalation end. When the phase change ventilation area is close to the smoke suction end, the phase change ventilation area first detects the temperature change, which is advantageous for controlling the air volume, has a high temperature lowering effect, and the non-phase change ventilation area smoke sucks. When close to the edge, such a structure facilitates processing and manufacturing. However, regardless of the arrangement method of the above two types of ventilation regions, the purpose of "enabling two types of smoking methods" is achieved, but each has advantages, for example, a temperature lowering effect or processing. Manufacturing is superior.

As a preferred embodiment of the present invention, the distance between the phase change ventilation region and the smoke suction end is equal to or greater than the distance between the phase change ventilation region and the non-phase change ventilation region, or the non-phase change ventilation region is present. The distance between the region and the smoke suction end is equal to or greater than the distance between the phase change ventilation region and the non-phase change ventilation region.

In the present invention, in the measurement of the distance between the phase change region and another position, the distance from the center line of the phase change region as the start point and the other position as the end point is set as both intervals, and similarly, the non-phase change region is measured. The measurement of the distance is the same as in the phase change region.

This is mainly because in the heated non-combustion smoking method, a part of the temperature lowering stage is inserted into the heating device and comes into contact with high temperature smoke, so by limiting this distance, the temperature lowering stage can be effectively utilized. This is to lower the temperature.

As a preferred embodiment of the present invention, the phase change temperature of the phase change material is 55 to 60 ° C. or 45 to 55 ° C. In order to avoid burning the mouth due to the temperature of the smoke being too high when inhaled into the user's body, the phase change material needs to undergo a phase change at any temperature in the temperature range of 45-60 ° C. The state of the phase change may be melting or shrinkage, and may be in the form of a phase change in which the aeration region is opened and the aeration amount is increased. The temperature felt by the user when inhaling smoke is determined by the phase change temperature of the phase change material, and in order to meet the user's needs, the phase change material must be melted in an appropriate temperature range, ventilated and cooled. Therefore, when the phase change material is close to the smoke suction end, the phase change material having a high phase change temperature and a phase change temperature range of 55 to 60 ° C. is preferably used, and the phase change material is smoke suction. When separated from the edge, a phase change material having a low phase change temperature and a phase change temperature range of 45 to 55 ° C. is preferably used.

In a preferred embodiment of the invention, the composition of the phase change material comprises 7-10 parts by weight of starch, 0.1 to 1.5 parts by weight of polylactic acid, and 0.1 to 1.5 parts by weight of polyol. ..

As a preferred embodiment of the present invention, the starch is one or more of corn starch, potato starch, purple sweet potato starch, and lily starch, and any of the corn starch, potato starch, purple sweet potato starch, and lily starch. The particle size is also in the range of 10 to 100 μm.

As a preferred embodiment of the present invention, the polylactic acid has a molecular weight of 20000 to 80000.

Since the variable material is manufactured from a completely degradable biological material, it has high environmental protection value, and the addition of polyol softens the material and enhances fluidity, thus facilitating the opening of the phase change aeration region. become. The ventilation of the phase change ventilation region is performed by opening the first ventilation hole, and the opening method of the first ventilation hole is specifically as follows. In other words, the phase change material comes into contact with the high temperature smoke and undergoes a phase change, and at the same time, the pressure increases at the center of the phase change material due to smoking, and the phase change material gradually opens from the closed state to both sides from the center. Thus, a process is realized in which the phase change aeration region increases the aeration amount as the temperature rises.

Here, the weight ratio of the phase changing material used in the present invention is described, specifically, 7.00 to 10.0 parts of starch, 0.1 to 1.5 parts of the phase changing material, and polyol 0. .1 to 1.5 copies. Among these, the starch may be one or more of cornstarch, potato starch, purple sweet potato starch and lily starch, the particle size range is 10 μm to 100 μm, and the polyol is propylene glycol or glycerol. 1 or 2 types of. The thickness of the phase-changing material is determined by the heat resistance of the material so that the phase-changing material can change the air permeability in a timely manner in response to changes in temperature. The heat required to open the pores increases, and therefore the thickness of the phase change material is preferably in the range of 50-500 μm.

As a preferred embodiment of the present invention, when only the second vent is ventilated, the total air permeability of the cigarette is in the range of 30-60% and both the first vent and the second vent are ventilated. In this case, the total air permeability of the cigarette is 70% or more. In this way, the cigarette's air permeability in the case of burning smoke is properly maintained to ensure a good smoking experience, while in the case of heated non-combustion smoking, the air volume is increased, hot smoke and the temperature of the filter surface. Effectively reduces. When both the first vent and the second vent have a vent structure and are evenly distributed on the coating layer, the quantity of these vents, the size of the pore diameter, and the arrangement method are all of the cigarette. It can be adjusted according to the actual needs to meet the air permeability requirements. However, as a result of research through experiments, it is possible to match the air permeability at the cigarettes where the distance from the smoke emission end is different, but the temperature lowering effect depends on the structure, material and design of the heater used in combination with the cigarette. Therefore, in addition to rationally setting the position of the through hole, the temperature lowering effect can be achieved by considering the design of the cigarette and the heater used in combination. As the combustion progresses, the temperature on the filter side of the cigarette rises, and if it is burned and sucked to the end, the first through hole may open, and as a result, a lot of airflow is generated when smoking. It enters the filter and dilutes the smoke to lower the temperature of the smoke, thereby ensuring the consistency of flavor and taste when smoking. As a more preferable technical proposal, the distance between the phase change ventilation region and the smoke suction end is smaller than the distance between the phase change ventilation region and the non-phase change ventilation region, and when arranged in this way, the scent of smoke is obtained. It is advantageous for improving the taste.

In order to put the above filter into practical use, the present invention also presents, especially in the present day when tobacco develops at high speed.
Provided is a cigarette comprising the above filter, which can be used for both the conventional combustion smoking method and the heated non-burning smoking method.

In the present invention, the cigarette further comprises a tobacco section to which the filter is connected.

Compared with the prior art, the beneficial effects of the present invention are as follows.

In the present invention, the coating layer is provided with a phase change ventilation region and a non-phase change ventilation region, and a first ventilation hole and a second ventilation hole are provided in each of the phase change ventilation region and the non-phase change ventilation region. The inside of the first ventilation hole is filled with a phase change material to become a selective ventilation region that can be automatically opened in response to a change in temperature, and the non-phase change ventilation region is a general ventilation region. When the heated non-combustion smoking method is used, the temperature of the smoke emission end becomes extremely high, which melts the phase change material, at which time the first vent is automatically opened and the air volume is increased. , The temperature of the smoke that is inhaled drops. When smoking by the combustion method, the temperature at the smoke emission end is low and does not affect smoking.

It is a three-dimensional structure schematic diagram of this invention. It is a front structure schematic diagram of this invention. It is a structural schematic diagram of the use state of this invention. It is a structural schematic diagram of another use state of this invention. It is a structural schematic diagram of the temperature lowering stage of this invention.

Hereinafter, the present invention will be further described with reference to the embodiments.

Example 1
As shown in FIGS. 1 to 5, the present embodiment provides a variable air flow filter, which includes a filter element 1 and a coating layer 2 enclosing the filter element 1 and is a filter element. 1 includes a smoke suction end 11 and a smoke emission end 12, a phase change ventilation region 21 and a non-phase change ventilation region 22 are provided in the coating layer 2, and a plurality of first ventilation holes 212 are provided in the phase change ventilation region 21. Is provided, and a plurality of second ventilation holes 221 are provided in the non-phase change ventilation region 22, and external air passes through the covering layer 2 through the first ventilation holes 212 and the second ventilation holes 221 respectively. Then, a part of the filter element 13 is reached, the inside of the first ventilation hole 212 is filled with the phase change material 211, and the starch tube 14 is provided in the portion of the inside of the filter element near the smoke suction end. The starch tube 14 is provided with a hollow cavity 15, and the phase change temperature range of the phase change material 211 is 45 to 60 ° C.

Specifically, the opening method of the first ventilation hole 212 is as follows. That is, the phase change material 211 comes into contact with the high temperature smoke and undergoes a phase change, and at the same time, the pressure increases at the center of the phase change material 211 due to smoking, and the phase change material 211 gradually opens from the closed state to both sides from the center. In this way, the process in which the phase change aeration region increases the aeration amount as the temperature rises is realized.

When the phase change aeration region 21 is close to the smoke suction end 11, the phase change aeration region 21 first detects the temperature change, which is advantageous for controlling the aeration amount and has a high temperature lowering effect, in this case, the phase change. When the temperature range of the phase change of the material 211 is 55 to 60 ° C. and the non-phase change ventilation region 221 is close to the smoke suction end, the temperature range of the phase change of the phase change material 211 is 45 to 55 ° C. at a relatively low temperature. This structure facilitates processing and manufacturing. However, regardless of the arrangement method of the above two types of ventilation regions, the purpose of "enabling two types of smoking methods" is achieved, but each has advantages, for example, a temperature lowering effect or processing. Manufacturing is superior. In this embodiment, the distance between the phase change ventilation region 21 and the smoke suction end 11 is equal to or greater than the distance between the phase change ventilation region 21 and the non-phase change ventilation region 22, and when arranged in this way, the scent of smoke It is advantageous for improving the taste. In such a case, the phase change material 211 undergoes a phase change under the condition of 55 ° C. to increase the aeration amount, and the aeration rate is set to 80%.

The covering layer 2 is provided with a phase change aeration region 21 and a non-phase change aeration region 22, and a phase change material 211 is provided in the phase change aeration region 21. In this embodiment, a plurality of first ventilation holes 212 are evenly provided in the phase change ventilation region 21, and the inside of the first ventilation holes 212 is filled with the phase change material 211, and the structure of the ventilation holes is formed. Is easy to process and the filling of the pores with the phase change material 211 does not increase the thickness of the coating layer 2 and maintains good filter appearance, while inside the pores. The degree of bonding of the changing material 211 is high, and it is difficult to separate. The second ventilation hole 221 is evenly provided in the non-phase change ventilation region 22.

The phase change material 211 can undergo a phase change under temperature conditions of 45 to 60 ° C. Since the temperature felt by the user who inhales smoke is determined by the phase change temperature of the phase change material 211, the phase change material 211 must be melted in an appropriate temperature range so that the temperature can be lowered by aeration to meet the user's needs. Therefore, a phase change material having a phase change temperature range of 50 to 55 ° C. is suitable. In this embodiment, the phase change temperature is 50 to 55 ° C., and the composition of the phase change material used contains starch, polylactic acid, and a polyol, and thus has the advantage of being easily bonded and easily distributed. There is. The thickness of the phase change material must not be too large in order for the phase change material to change the aeration amount in a timely manner in response to the change in temperature, and in this embodiment, the thickness of the phase change material is 50 to 500 μm. Specifically, in this embodiment, the thickness of the phase changing material is 300 μm. Then, when only the non-phase change ventilation region 22 is ventilated, the total air permeability of the cigarette is in the range of 30 to 60%, and when both the phase change ventilation region 21 and the non-phase change ventilation region 22 are ventilated, the filter is used. The air permeability is 70% or more, and such a structure can provide a better and more stable smoke flavor. When both the phase change ventilation region 21 and the non-phase change ventilation region 22 have a ventilation hole structure and are evenly distributed on the covering layer 2, the number of these ventilation holes, the size of the pore diameter, and the arrangement method are all determined. It can be adjusted according to actual needs to meet the requirements for cigarette air permeability. By adjusting the position of the first vent, a temperature lowering effect on smoke can be achieved.

Cigarettes using the above filter can be applied to both the conventional combustion smoking method and the heated non-burning smoking method.

In the present invention, the cigarette further includes a tobacco section to which the filter is connected.

The operating principle of the present invention is as follows.

When smoking a cigarette in a combustion manner, the phase-changing aeration region 21 remains closed and the non-phase-changing aeration region 22 increases a certain amount of aeration, thereby reducing the temperature that enters the human body from chopped tobacco. It is enough. When smoking a cigarette by the heating non-combustion method, the temperature of the smoke sucked by the filter is higher than the temperature when smoking by the combustion method. At this time, the phase change material 211 of the phase change ventilation region 21 undergoes a phase change. , The phase change aeration region 21 is opened to increase the aeration amount, at which time the total aeration rate of the cigarette reaches 70% or more.

Example 2
As shown in FIG. 4, the present embodiment is the second embodiment of the present invention, in which the non-phase change aeration region 22 is close to the smoke suction end 11, and the non-phase change aeration region 22 and the smoke inhalation region 22 are close to each other. It is the same as in Example 1 except that the distance between the end 11 and the phase change ventilation region 21 is equal to or greater than the distance between the phase change ventilation region 21 and the non-phase change ventilation region 22. In this case, the phase change material 211 undergoes a phase change under the condition of 50 ° C. to increase the aeration amount, and the total aeration rate of the cigarette is 75%.

Of course, the above-mentioned embodiment of the present invention is merely an example for clearly explaining the present invention, and does not limit the embodiment of the present invention. Those skilled in the art may make various other forms of change or modification based on the above description. It is not necessary or impossible to list all the embodiments here. All modifications, equal substitutions and improvements made without departing from the spirit and principles of the present invention shall be included in the scope of the claims of the present invention.

1 Filter element 11 Smoke suction end 12 Smoke emission end 14 Starch tube 15 Hollow cavity 2 Coating layer 21 Phase change ventilation area 22 Phase change ventilation area 211 Phase change material 212 First ventilation hole 221 Second ventilation hole.

As a preferred embodiment of the present invention, when only the second vent is ventilated, the total air permeability of the cigarette is in the range of 30-60% and both the first vent and the second vent are ventilated. In this case, the total air permeability of the cigarette is 70% or more. In this way, the cigarette's air permeability in the case of burning smoke is properly maintained to ensure a good smoking experience, while in the case of heated non-combustion smoking, the air volume is increased, hot smoke and the temperature of the filter surface. Effectively reduces. When both the first vent and the second vent have a vent structure and are evenly distributed on the coating layer, the quantity of these vents, the size of the pore diameter, and the arrangement method are all of the cigarette. It can be adjusted according to the actual needs to meet the air permeability requirements. However, as a result of research through experiments, it is possible to match the air permeability at the cigarettes where the distance from the smoke emission end is different, but the temperature lowering effect depends on the structure, material and design of the heater used in combination with the cigarette. Therefore, in addition to rationally setting the position of the through hole, the temperature lowering effect can be achieved by considering the design of the cigarette and the heater used in combination. As the combustion progresses, the temperature on the filter side of the cigarette rises, and if it is burned and sucked to the end, the first through hole may open, and as a result, a lot of airflow is generated when smoking. It enters the filter and dilutes the smoke to lower the temperature of the smoke, thereby ensuring the consistency of flavor and taste when smoking. As a more preferable technical proposal, if the distance between the phase change ventilation region and the smoke suction end is equal to or greater than the distance between the phase change ventilation region and the non-phase change ventilation region, or if the smoke is arranged in this way, smoke is generated. It is advantageous for improving the flavor of smoke.

Example 1
As shown in FIGS. 1 to 5, the present embodiment provides a variable air flow filter, which includes a filter element 1 and a coating layer 2 enclosing the filter element 1 and is a filter element. 1 includes a smoke suction end 11 and a smoke emission end 12, a phase change ventilation region 21 and a non-phase change ventilation region 22 are provided in the coating layer 2, and a plurality of first ventilation holes 212 are provided in the phase change ventilation region 21. Is provided, and a plurality of second ventilation holes 221 are provided in the non-phase change ventilation region 22, and external air passes through the covering layer 2 through the first ventilation holes 212 and the second ventilation holes 221 respectively. Then, a part of the filter element 1 is reached, the inside of the first ventilation hole 212 is filled with the phase change material 211, and the starch tube 14 is provided in the portion of the inside of the filter element near the smoke suction end. The starch tube 14 is provided with a hollow cavity 15, and the phase change temperature range of the phase change material 211 is 45 to 60 ° C.

When the phase change aeration region 21 is close to the smoke suction end 11, the phase change aeration region 21 first detects the temperature change, which is advantageous for controlling the aeration amount and has a high temperature lowering effect, in this case, the phase change. temperature range of the phase change material 211 is 55 to 60 ° C., if a non-phase change vent region 2 2 is close to the smoke suction end, the temperature range Shi of the phase change of the phase change material 211 relatively cool 45-55 The temperature is ℃, and such a structure facilitates processing and manufacturing. However, regardless of the arrangement method of the above two types of ventilation regions, the purpose of "enabling two types of smoking methods" is achieved, but each has advantages, for example, a temperature lowering effect or processing. Manufacturing is superior. In this embodiment, the distance between the phase change ventilation region 21 and the smoke suction end 11 is equal to or greater than the distance between the phase change ventilation region 21 and the non-phase change ventilation region 22, and when arranged in this way, the scent of smoke It is advantageous for improving the taste. In such a case, the phase change material 211 undergoes a phase change under the condition of 55 ° C. to increase the aeration amount, and the aeration rate is set to 80%.

Claims (10)

It comprises a filter element and a coating layer surrounding the filter element, wherein the filter element includes a smoke inhalation end and a smoke emission end.
The coating layer is provided with a phase change ventilation region and a non-phase change ventilation region, a plurality of first ventilation holes are provided in the phase change ventilation region, and a plurality of second ventilation regions are provided in the non-phase change ventilation region. Vents are provided,
External air passes through the coating layer through each of the first vent and the second vent to reach a part of the filter element.
The inside of the first vent is filled with a phase change material.
A starch tube is provided in the portion of the inside of the filter element near the smoke suction end.
A variable aeration rate filter, wherein the phase change temperature of the phase change material is in the range of 45 to 60 ° C. The variable aeration amount filter according to claim 1, wherein the phase change aeration region is close to the smoke suction end. The variable ventilation amount according to claim 2, wherein the distance between the phase change ventilation region and the smoke suction end is equal to or larger than the distance between the phase change ventilation region and the non-phase change ventilation region. filter. The variable air volume filter according to claim 3, wherein the phase change temperature of the phase change material is 55 to 60 ° C. The variable ventilation amount filter according to claim 1, wherein the non-phase change ventilation region is close to the smoke suction end. The variable air volume filter according to claim 5, wherein the distance between the non-phase change ventilation region and the smoke suction end is equal to or larger than the distance between the phase change ventilation region and the non-phase change ventilation region. .. The variable air flow rate filter according to claim 6, wherein the phase change temperature of the phase change material is 45 to 55 ° C. The variable aeration amount filter according to any one of claims 2 to 4, wherein the phase change aeration region is located in the starch tube. The total aeration rate of the cigarette is in the range of 40-60% when only the second vent is ventilated, and the cigarette is ventilated when both the first vent and the second vent are ventilated. The variable air volume filter according to claim 1 to 8, wherein the total air permeability is 70% or more. A cigarette comprising the filter according to any one of claims 1 to 9.

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