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CN110419773B - Filter tip and cigarette of variable air volume - Google Patents

Filter tip and cigarette of variable air volume Download PDF

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Publication number
CN110419773B
CN110419773B CN201910672151.4A CN201910672151A CN110419773B CN 110419773 B CN110419773 B CN 110419773B CN 201910672151 A CN201910672151 A CN 201910672151A CN 110419773 B CN110419773 B CN 110419773B
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CN
China
Prior art keywords
ventilation
phase change
smoke
filter
cigarette
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910672151.4A
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Chinese (zh)
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CN110419773A (en
Inventor
刘熙
李峰
刘义波
胡静
赵瑞峰
叶荣飞
李丹
单婧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Tobacco Guangdong Industrial Co Ltd
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China Tobacco Guangdong Industrial Co Ltd
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Publication date
Priority to CN201910672151.4A priority Critical patent/CN110419773B/en
Application filed by China Tobacco Guangdong Industrial Co Ltd filed Critical China Tobacco Guangdong Industrial Co Ltd
Priority to US17/259,558 priority patent/US20210177047A1/en
Priority to PCT/CN2019/102662 priority patent/WO2021012349A1/en
Priority to KR1020217000914A priority patent/KR102649730B1/en
Priority to UAA202100091A priority patent/UA127234C2/en
Priority to JP2020573411A priority patent/JP7539319B2/en
Priority to EP19934340.1A priority patent/EP3799729B1/en
Publication of CN110419773A publication Critical patent/CN110419773A/en
Priority to PH12021550151A priority patent/PH12021550151A1/en
Application granted granted Critical
Publication of CN110419773B publication Critical patent/CN110419773B/en
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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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • 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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/041—Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • 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
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0287—Manufacture of tobacco smoke filters for filters with special features for composite filters
    • 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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
    • 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
    • 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
    • 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
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • 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
    • A24D3/17—Filters specially adapted for simulated smoking devices

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

The invention discloses a filter tip with variable ventilation and a cigarette. The filter tip comprises a filter element and a coating layer, wherein the filter element is wrapped by the coating layer; the filter element comprises a smoke inlet end and a smoke release end; the coating layer is provided with a phase change ventilation area and a non-phase change ventilation area, the phase change ventilation area is provided with a plurality of first ventilation holes, and the non-phase change ventilation area is provided with a plurality of second ventilation holes; the outside air penetrates through the coating layer through the first vent hole and the second vent hole and penetrates into part of the filter element; a starch pipe is arranged at the part, close to the flue gas inlet end, in the filter element; phase change materials are filled in the first ventilation holes; the phase change temperature range of the phase change material is 45-60 ℃. The invention also discloses a cigarette applying the filter tip. The invention can be used for suction in an ignition mode or in a non-ignition heating mode.

Description

Filter tip and cigarette of variable air volume
Technical Field
The invention relates to the field of design and processing of cigarette filters, in particular to a filter with variable ventilation and a cigarette.
Background
The smoking mode of the cigarette can adopt a mode of igniting the cut tobacco by open fire, and can also adopt a mode of non-combustion to bake the cut tobacco and release smoke. No matter which mode is adopted to release the smoke, the smoke is required to be filtered through the filter tip and then enters the human body.
Current filter designs are often considered to satisfy only a single condition, such as a puff only condition or a non-puff only condition. And the user has both need to ignite the smoking flue gas, also need not burn the demand of smoking flue gas, and under this condition, traditional filter design just can not satisfy user's demand, brings inconvenience for the user.
The prior art improvements to filters are still limited to a single suction mode, for example, chinese patent application No. 201721766369.9, which automatically changes the amount of ventilation by placing a highly permeable paper between the filter rod and the tipping paper and coating the highly permeable paper with a phase change material. Such a design also only allows for automatic adjustment of the smoking smoke of the ignition cigarette. For the increasing use demands of consumers, a filter capable of meeting the smoking mode and the non-combustion heating smoking mode is still lacking.
Disclosure of Invention
The invention mainly solves the technical problem that a filter tip with variable ventilation rate is provided aiming at the defect that a cigarette which is suitable for both a smoking mode and a non-smoking heating smoking mode is lacked in the prior art.
The invention also aims to solve the technical problem of providing a cigarette adopting the filter tip with variable ventilation.
In order to solve the technical problems, the invention adopts the following specific technical scheme:
a filter tip with variable ventilation comprises a filter element and a coating layer, wherein the coating layer wraps the filter element; the filter element comprises a smoke inlet end and a smoke release end; the coating layer is provided with a phase change ventilation area and a non-phase change ventilation area, the phase change ventilation area is provided with a plurality of first ventilation holes, and the non-phase change ventilation area is provided with a plurality of second ventilation holes; the outside air penetrates through the coating layer to reach part of the filter element through the first vent hole and the second vent hole respectively; phase change materials are filled in the first ventilation holes; a starch pipe is arranged at the part, close to the flue gas inlet end, in the filter element; the phase change material has a phase change temperature range of 45-60 ℃.
The coating layer is provided with a phase change ventilation area and a non-phase change ventilation area, the phase change ventilation area and the non-phase change ventilation area are respectively provided with a first ventilation hole and a second ventilation hole, phase change materials are filled in the first ventilation hole, the selective ventilation area can be automatically opened along with temperature change, and the non-phase change ventilation area is a normal ventilation area. When the non-ignition heating suction mode is used, the temperature of the smoke discharge end is very high, so that the phase change material can be melted, and at the moment, the first ventilation hole is automatically opened to improve the ventilation quantity and reduce the temperature of the sucked smoke. When the ignition mode is used for suction, the temperature of the smoke releasing end is low, and suction cannot be influenced.
The starch pipe has a good cooling effect on one hand, and has a certain supporting effect on the other hand, and particularly, when a non-ignition heating and sucking mode is used, a cigarette can be conveniently inserted.
As a preferable scheme of the present invention, the phase change ventilation area is close to the smoke inlet end or the non-phase change ventilation area is close to the smoke inlet end.
As a preferred technical scheme, the phase change ventilation area is close to the smoke inlet end or the non-phase change ventilation area is close to the smoke inlet end. When the phase change ventilation area is close to the smoke inlet end, the phase change ventilation area firstly senses the temperature change, so that the ventilation quantity can be controlled, and the cooling effect is good; when the non-phase change ventilation area is close to the smoke inlet end, the structure is convenient to process and manufacture. However, no matter in any of the above two ventilation zone arrangements, the purpose of "one smoke two pumping" can be realized, and only the arrangement is biased, or the arrangement is biased to the cooling effect, or the arrangement is biased to the processing and manufacturing.
As a preferred scheme of the invention, the distance between the phase change ventilation area and the smoke inlet end is not less than the distance between the phase change ventilation area and the non-phase change ventilation area; or the distance between the non-phase-change ventilation area and the smoke inlet end is not less than the distance between the phase-change ventilation area and the non-phase-change ventilation area.
The distance between the phase change area and other positions is measured by taking the central line of the phase change area as a starting point and other positions as an end point, and the distance is the distance between the phase change area and the other positions; likewise, the distance measurement of the non-phase change region coincides with the phase change region.
The purpose of doing so is mainly in order not to ignite in the heating and suction mode, because the heating device will be inserted to some of cooling section, contacts high temperature flue gas, therefore can utilize cooling section to lower the temperature better to the restriction of distance.
As a preferable scheme of the invention, the phase change temperature of the phase change material is 55-60 ℃ or 45-55 ℃. In order to meet the requirement that the temperature in the body of a user is not too high, the condition of burning the mouth is avoided, the phase change material needs to be subjected to phase change under a certain condition within the temperature range of 45-60 ℃, the phase change state can be melting and shrinking, the ventilation area can be opened, and the phase change shape for increasing the ventilation volume is similar to the shape of the phase change. The phase change temperature of the phase change material determines the temperature sensed by the smoke entering a user, the smoke needs to be melted in a proper temperature range, and the requirements of the user can be met only by ventilating and cooling, so that when the phase change material is close to the smoke entering end, the phase change temperature of the phase change material is higher, and the phase change material with the phase change temperature range of 55-60 ℃ is more suitable; when the phase-change material is far away from the flue gas inlet end, the phase-change temperature of the phase-change material is low, and the phase-change material with the phase-change temperature range of 45-55 ℃ is suitable for use.
As a preferable scheme of the invention, the phase-change material comprises the following components in parts by weight: 7-10 parts of starch, 0.1-1.5 parts of polylactic acid and 0.1-1.5 parts of polyhydric alcohol.
As a preferable scheme of the invention, the starch is one or more of corn starch, potato starch, purple sweet potato starch and lily starch, wherein the particle size of the corn starch, the potato starch, the purple sweet potato starch and the lily starch is within the range of 10-100 microns.
In a preferred embodiment of the present invention, the molecular weight of the polylactic acid is 20000 to 80000.
The phase-change material is made of fully-degradable biological materials, and has high environmental protection value; the addition of the polyhydric alcohol softens the material and improves the fluidity, so that the phase change ventilation zone is more favorably opened. The ventilation of the phase change ventilation area depends on the opening of the first ventilation hole, and the specific opening mode of the first ventilation hole is as follows: the phase-change material contacts high-temperature smoke to generate phase change, and meanwhile, the pressure intensity of the suction at the center of the phase-change material is higher, so that the state of the phase-change material is gradually changed from the closed state to the openings from the center to the two sides, and the process that the ventilation volume of the phase-change ventilation area is increased along with the rise of the temperature is realized.
Here, the weight ratio of the phase change material adopted by the present invention is specifically: 7.0-10.0 parts of starch, 0.1-1.5 parts of phase change material and 0.1-1.5 parts of polyhydric alcohol. Wherein the starch can be one or more of corn starch, potato starch, purple sweet potato starch and lily starch, and the particle size range is 10-100 mu m; the polyalcohol is one or two of propylene glycol or glycerol. In order to meet the requirement that the ventilation quantity of the phase-change material is changed in time along with the change of the temperature, the thickness of the phase-change material depends on the temperature resistance of the material, different materials have different temperature resistance, and generally, the phase-change material is too thick to open holes, so that more heat is needed, and therefore, the thickness of the phase-change material is preferably within the range of 50-500 mu m.
As a preferred scheme of the invention, when only the second ventilation holes are ventilated, the total ventilation rate of the cigarettes is within the range of 30-60%; when the first ventilation hole and the second ventilation hole are ventilated simultaneously, the total ventilation rate of the cigarette is not lower than 70%. Therefore, the proper ventilation rate of the cigarette under the smoking condition is ensured, good smoking experience is ensured, and ventilation can be increased when smoking is carried out under the heating and non-burning condition, so that the temperature of hotter smoke and the surface of the filter tip can be effectively reduced. If first ventilation hole and second ventilation hole all are ventilation hole structure and evenly distributed on the coating, the quantity, the aperture size, the mode of arranging of these ventilation holes all can be adjusted according to actual need to satisfy a cigarette and expect to the ventilation rate. However, experimental research finds that the ventilation rate can be consistent at different distances from the cigarette close to the smoke release end, but the cooling effect is related to the design of cigarette structures, materials and matched heaters, so that the cooling effect can be realized by reasonably setting the positions of the through holes and combining the design of the cigarette and the matched heaters. It is worth noting that the cigarette is burnt, the temperature of the filter tip is gradually increased, and when the cigarette is ignited and sucked to the rear end, the first through hole is opened, so that air flow enters the filter tip more to dilute smoke and reduce the smoke temperature during suction, and the consistency of the smoking taste can be ensured. As a more preferable technical scheme, the distance between the phase change ventilating area and the smoke inlet end is smaller than the distance between the phase change ventilating area and the non-phase change ventilating area, and the arrangement is favorable for improving the taste of smoke.
In order to realize the application of the filter tip, particularly in the time of tobacco revolution which is changing day by day, the invention also provides:
a cigarette comprising the filter tip can be subjected to conventional smoking or non-smoking heating smoking.
In the invention, the cigarette also comprises a tobacco section, and the filter tip is connected with the tobacco section.
Compared with the prior art, the invention has the beneficial effects that:
the coating layer is provided with a phase change ventilation area and a non-phase change ventilation area, the phase change ventilation area and the non-phase change ventilation area are respectively provided with a first ventilation hole and a second ventilation hole, phase change materials are filled in the first ventilation hole, the selective ventilation area can be automatically opened along with temperature change, and the non-phase change ventilation area is a normal ventilation area. When the non-ignition heating suction mode is used, the temperature of the smoke discharge end is very high, so that the phase change material can be melted, and at the moment, the first ventilation hole is automatically opened to improve the ventilation quantity and reduce the temperature of the sucked smoke. When the ignition mode is used for suction, the temperature of the smoke releasing end is low, and suction cannot be influenced.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic front view of the present invention.
FIG. 3 is a schematic structural diagram of the present invention in use.
Fig. 4 is a schematic structural diagram of another use state of the present invention.
Fig. 5 is a schematic structural diagram of the cooling section of the present invention.
In the figure: 1. a filter element; 11. a flue gas inlet end; 12. a smoke releasing end; 14. a starch tube; 15. a hollow cavity; 2. a coating layer; 21. a phase change ventilation zone; 22. a non-phase change ventilation zone; 211. a phase change material; 212. a first vent hole; 221. and a second vent hole.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1
As shown in fig. 1 to 5, the present embodiment provides a filter tip with variable ventilation, which includes a filter element 1 and a coating layer 2, wherein the coating layer 2 wraps the filter element 1; the filter element 1 comprises a smoke inlet end 11 and a smoke discharge end 12; a phase change ventilation area 21 and a non-phase change ventilation area 22 are arranged on the coating layer 2, a plurality of first ventilation holes 212 are arranged on the phase change ventilation area 21, and a plurality of second ventilation holes 221 are arranged on the non-phase change ventilation area 22; the outside air penetrates through the coating layer 2 to penetrate into a part of the filter element 13 through the first vent hole 212 and the second vent hole 221 respectively; the phase change material 211 is filled in the first vent hole 212; a starch pipe 14 is arranged at the part, close to the flue gas inlet end, in the filter element, and a hollow cavity 15 is arranged in the starch pipe 14; the phase change temperature range of the phase change material 211 is 45-60 ℃.
The specific opening manner of the first vent hole 212 is: the phase-change material 211 contacts with the high-temperature flue gas to generate phase change, meanwhile, the pressure of the phase-change material 211 at the center is higher due to the suction force, the state of the phase-change material 211 is gradually changed from closed to open from the center to two sides, and therefore the process that the ventilation quantity of the phase-change ventilation area is increased along with the rise of the temperature is achieved.
When the phase change ventilation area 21 is close to the flue gas inlet end 11, the phase change ventilation area 21 firstly senses the temperature change, so that the ventilation quantity can be controlled, the cooling effect is good, and the phase change temperature range of the phase change material 211 is 55-60 ℃; when the non-phase-change ventilation area 221 is close to the flue gas inlet end, the phase-change temperature range of the phase-change material 211 is 45-55 ℃, the temperature is relatively low, and the structure is convenient to process and manufacture. However, no matter in any of the above two ventilation zone arrangements, the purpose of "one smoke two pumping" can be realized, and only the arrangement is biased, or the arrangement is biased to the cooling effect, or the arrangement is biased to the processing and manufacturing. In this embodiment, the distance between the phase change ventilation zone 21 and the smoke entrance end 11 is not less than the distance between the phase change ventilation zone 21 and the non-phase change ventilation zone 22, and such arrangement is favorable for improving the taste of the smoke. In this case, the phase change material 211 is phase-changed at 55 c to increase ventilation, which is 80%.
The cladding layer 2 is provided with a phase change ventilating area 21 and a non-phase change ventilating area 22, and the phase change ventilating area 21 is provided with a phase change material 211. In this embodiment, evenly be equipped with a plurality of first ventilation holes 212 on the phase transition ventilation zone 21, pack phase change material 211 in the first ventilation hole 212, the ventilation hole structure is processed easily, can not increase the thickness of coating 2 on the one hand at downthehole packing phase change material 211 for the filter tip is natural pleasing to the eye, and on the other hand phase change material 211 is high at downthehole combination degree, is difficult to drop. The non-phase change ventilating area 22 is uniformly provided with second ventilating holes 221.
The phase-change material 211 can change phase at a temperature of 45-60 ℃. Phase change material 211's phase transition temperature has decided the flue gas and has got into user's experience temperature, needs to satisfy and melts in suitable temperature range, carries out aeration cooling and just can satisfy user's demand, so, uses the phase transition temperature range to be comparatively suitable at 50 ~ 55 ℃ phase transition material. In the embodiment, the phase transition temperature is 50-55 ℃, and the adopted phase transition material comprises starch, polylactic acid and polyalcohol, so that the phase transition material has the advantages of convenience in combination and easiness in circulation. In order to satisfy the requirement that the ventilation quantity of the phase change material is changed in time along with the change of the temperature, the thickness of the phase change material cannot be too thick, in the embodiment, the thickness of the phase change material is 50-500 μm, and particularly in the embodiment, the thickness of the phase change material is 300 μm. When only the non-phase change ventilation area 22 is ventilated, the total ventilation rate of the cigarettes is within the range of 30-60%; when the phase change ventilating area 21 and the non-phase change ventilating area 22 are ventilated simultaneously, the ventilation rate of the filter is not lower than 70%, and the structure can provide better and more stable smoke taste. If phase transition ventilation zone 21 and non-phase transition ventilation zone 22 all are ventilation hole structure and evenly distributed on coating 2, if phase transition ventilation zone and non-phase transition ventilation zone all are ventilation hole structure and evenly distributed on the coating, the quantity, the aperture size, the mode of arranging of these ventilation holes all can be adjusted according to actual need to satisfy a cigarette and expect to the rate of ventilation. Through the adjustment of first ventilation hole position, can also play the effect of flue gas cooling.
A cigarette applying the filter tip can be used in a traditional smoking mode and is also suitable for a non-smoking heating smoking mode.
In the invention, the cigarette also comprises a tobacco section, and the filter tip is connected with the tobacco section.
The working principle of the invention is as follows:
the phase change ventilation zone 21 remains closed when the cigarette is smoked; the non-phase change ventilation area 22 increases a certain ventilation quantity enough to reduce the temperature of the tobacco shreds released into human bodies. When the cigarette is smoked in a non-combustion heating mode, the temperature of smoke entering the filter tip is higher than that of the smoke smoked in a lighting mode, the phase change material 211 of the phase change ventilating area 21 is subjected to phase change, the phase change ventilating area 21 is opened, the ventilation quantity is increased, and the total ventilation rate of the cigarette can reach more than 70%.
Example 2
As shown in fig. 4, this embodiment is a second embodiment of the present invention, which is substantially the same as embodiment 1 except that the non-phase change ventilation zone 22 is close to the smoke inlet end 11, and the distance between the non-phase change ventilation zone 22 and the smoke inlet end 11 is not smaller than the distance between the phase change ventilation zone 21 and the non-phase change ventilation zone 22. At this time, the phase change material 211 is subjected to phase change at 50 ℃ to increase the ventilation, and the total ventilation rate of the cigarette is 75%.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A filter tip with variable ventilation is characterized by comprising a filter element and a coating layer, wherein the coating layer wraps the filter element; the filter element comprises a smoke inlet end and a smoke release end;
the coating layer is provided with a phase change ventilation area and a non-phase change ventilation area, the phase change ventilation area is provided with a plurality of first ventilation holes, and the non-phase change ventilation area is provided with a plurality of second ventilation holes;
the outside air penetrates through the coating layer to reach part of the filter element through the first vent hole and the second vent hole respectively;
phase change materials are filled in the first ventilation holes;
a starch pipe is arranged at the part, close to the flue gas inlet end, in the filter element;
the phase change material has a phase change temperature range of 45-60 ℃.
2. A variable ventilation filter according to claim 1, wherein the phase change ventilation zone is adjacent the smoke entry end.
3. A variable ventilation filter according to claim 2, wherein the phase change ventilation zone is located at a distance from the smoke entrance end that is no less than the distance between the phase change ventilation zone and the non-phase change ventilation zone.
4. A filter tip with variable ventilation according to claim 3, wherein the phase change temperature of the phase change material is 55-60 ℃.
5. A variable ventilation filter according to claim 1, wherein the non-phase change ventilation zone is adjacent the smoke entry end.
6. A variable ventilation filter according to claim 5, wherein the distance from the non-phase change ventilation zone to the smoke entrance end is no less than the distance from the phase change ventilation zone to the non-phase change ventilation zone.
7. A filter tip with variable ventilation according to claim 6, wherein the phase change temperature of the phase change material is 45-55 ℃.
8. A variable ventilation filter according to any one of claims 2 to 4, wherein the phase change ventilation zone is located on the starch tube.
9. A filter tip with variable ventilation according to any one of claims 1 to 7, wherein when only the second ventilation holes are ventilated, the total ventilation rate of the cigarette is in the range of 40 to 60%; when the first ventilation hole and the second ventilation hole are ventilated simultaneously, the total ventilation rate of the cigarette is not lower than 70%.
10. A cigarette comprising a filter according to any one of claims 1 to 9.
CN201910672151.4A 2019-07-24 2019-07-24 Filter tip and cigarette of variable air volume Active CN110419773B (en)

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CN201910672151.4A CN110419773B (en) 2019-07-24 2019-07-24 Filter tip and cigarette of variable air volume
PCT/CN2019/102662 WO2021012349A1 (en) 2019-07-24 2019-08-27 Mouthpiece filter and cigarette having variable ventilation
KR1020217000914A KR102649730B1 (en) 2019-07-24 2019-08-27 Variable ventilation filter and cigarette
UAA202100091A UA127234C2 (en) 2019-07-24 2019-08-27 Mouthpiece filter and cigarette having variable ventilation
US17/259,558 US20210177047A1 (en) 2019-07-24 2019-08-27 Variable-ventilation filter tip and cigarette
JP2020573411A JP7539319B2 (en) 2019-07-24 2019-08-27 Variable airflow filter and cigarette
EP19934340.1A EP3799729B1 (en) 2019-07-24 2019-08-27 Mouthpiece filter and cigarette having variable ventilation
PH12021550151A PH12021550151A1 (en) 2019-07-24 2021-01-19 Variable-ventilation filter tip and cigarette

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CN110419773A (en) 2019-11-08
US20210177047A1 (en) 2021-06-17
UA127234C2 (en) 2023-06-14
EP3799729A4 (en) 2021-11-24
JP2021535736A (en) 2021-12-23
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EP3799729A1 (en) 2021-04-07
PH12021550151A1 (en) 2021-09-13

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