WO2020232838A1

WO2020232838A1 - Hollow support element comprising hollow cooling component and cigarette comprising same

Info

Publication number: WO2020232838A1
Application number: PCT/CN2019/099834
Authority: WO
Inventors: 赵辉; 赵杨; 杨柳; 段沅杏; 申钦鹏; 刘春波; 杨继; 龚为民; 吴俊�; 孙志勇; 陈永宽; 缪明明
Original assignee: 云南中烟工业有限责任公司
Priority date: 2019-05-21
Filing date: 2019-08-08
Publication date: 2020-11-26
Also published as: JP2021527391A; KR102447027B1; JP7153738B2; KR20200135808A

Abstract

A hollow support element (2) comprising a hollow cooling component (23) and a heat-not-burn cigarette comprising the hollow support element (2), the hollow support element (2) comprising a tube wall (21) and a tube cavity (22). The tube cavity (22) is internally provided with a hollow cooling component (23) in close proximity to the tube wall (21), and the hollow cooling component (23) extends axially along the hollow support element (2) and penetrates the hollow support element (2); grooves (231) extending in the axial direction of the hollow cooling component (23) are provided on the hollow cooling component (23), and the openings of the grooves (231) face away from the tube wall (21). The hollow support element (2) in the cigarette has a strong supporting force, and may take into account the cooling effect on flue gas; meanwhile the hollow support element (2) will not collapse during a phase change endothermic process, and the vaping experience is good.

Description

Hollow supporting element containing hollow cooling components and cigarette containing same

Technical field

The patent of the present invention relates to the technical field of heating non-combustion cigarette production, in particular to a hollow support element containing a hollow cooling component and a cigarette containing the same.

Background technique

As consumers pay more attention to health issues and increase their demand for personalized experience of cigarette products, the tobacco industry continues to respond to consumer demand upgrades and develops a variety of cigarettes with reduced tar and harm. Among them, heat-not-burn cigarettes are different from traditional cigarette products due to their cigarette heating methods, so that they can provide a healthier smoking experience while satisfying consumers' sensory needs for cigarette products.

Existing heat-not-burn cigarettes mainly include a core material section, a hollow support element, a cooling section and a filter tip section. The hollow support element not only supports the cigarette, but also gathers smoke and assists The cooling section cools the flue gas. In the prior art, ventilation holes are formed by punching through the wall of the hollow support element, so that the outside air enters the hollow support element and mixes with the smoke, thereby increasing the amount of smoke and effectively reducing the temperature of the smoke, but its cooling effect on the smoke and making the air The mixing effect with the flue gas is still not good due to the following two reasons: 1. The contact area between the flue gas and the wall of the hollow support element is limited, which cannot achieve effective cooling; 2. The residence time of the flue gas and air in the hollow support element Short, the flue gas and air directly and quickly enter the cooling section through the hollow support element, and cannot achieve full mixing. Therefore, in order to further realize the cooling of the flue gas, the current main aim is to improve the cooling material in the cooling section or directly increase the amount of cooling material. The existing cooling section is mostly gathered polylactic acid film, and the cooling material in the cooling section is in the form of The air flow channel formed by the gathered polylactic acid film is almost linear, and the flue gas stays in the cooling section for a short time and cannot achieve sufficient cooling. At the same time, the polylactic acid material is a phase change material. After a few puffs, The phase change material collapses and blocks the air flow channel, and the suction resistance is greatly increased, which affects the suction experience.

Therefore, it is desirable to develop a hollow support element that has strong support and can take into account the cooling effect to assist the cooling section to achieve a better cooling effect on the flue gas, or even replace the cooling section.

The present invention is proposed to solve the above-mentioned problems.

Summary of the invention

The first aspect of the present invention provides a hollow support element containing a hollow cooling component, which includes a tube wall 21 and a tube cavity 22;

The tube cavity 22 has a hollow cooling component 23 close to the tube wall 21, and the hollow cooling component 23 extends at least partly along the axial direction of the hollow supporting element;

The hollow cooling component 23 has a groove 231 extending axially along the hollow cooling component 23, and the opening of the groove 231 faces away from the tube wall 21.

Preferably, the hollow cooling component 23 has a granular cooling material 25 or a braided strip-shaped cooling material 25 woven from a material with cooling performance, and the cooling material is selected from polymer materials. From acetate, polylactic acid, polyethylene, polypropylene or polyethylene terephthalate.

Preferably, the number of the grooves 231 is N, and N is a positive integer greater than or equal to 2.

Preferably, the groove 231 spirally extends along the axial direction of the hollow supporting element.

Preferably, the cross section of the groove 231 is "U"-shaped, "V"-shaped or arc-shaped.

Preferably, the material of the tube wall 21 is a paper material or a non-woven fabric of a polymer material, and the polymer material is selected from cellulose acetate, polylactic acid, polyethylene, polypropylene, or polyethylene terephthalate.

Preferably, the hollow cooling component 23 is made by extruding a polymer material or spraying a polymer material on the tube wall 21, and the polymer material is selected from cellulose acetate, polylactic acid, polyethylene, polypropylene or Polyethylene terephthalate.

Preferably, the hollow supporting element has a vent hole 24 penetrating through the pipe wall 21 and the hollow temperature cooling component 23 along its radial direction.

The second aspect of the present invention provides a heat-not-burn cigarette, which in turn includes: a smoking core material section 1, the hollow support element according to the first aspect of the present invention, and a filter section 4;

Preferably, there is a cooling section 3 between the hollow support element and the filter section 4, and the hollow support element, the cooling section 3 and the filter section 4 are wrapped by forming paper to form a mouthpiece. The tobacco core material section 1 and the mouth rod are connected by a tipping paper, and the length of the hollow support element is 1/3-3/4 of the total length of the mouth rod.

Wherein, the cooling section 3 is a gathered polylactic acid mesh film, a polylactic acid tow or an acetate fiber tow wrapping a polylactic acid mesh film.

Wherein, the filter section 4 is cellulose acetate tow or a tow made of cellulose acetate and polylactic acid or a cellulose acetate tow is wrapped with a polylactic acid film, when the filter section 4 is made of a mixed cellulose acetate and polylactic acid When the tow, the mass ratio of the acetate fiber to the polylactic acid is 50-90%; when the filter section 4 is an acetate fiber tow wrapped with a polylactic acid film, the acetate fiber tow and the polylactic acid The volume ratio of the polylactic acid film is 50-90%.

Wherein, the smoking core material section 1 is a rod-shaped smoking core formed by random filling of shredded tobacco containing a smoking agent or reconstituted tobacco containing a flavor substance.

The heat-not-burn cigarette of the present invention can also be used as a traditional cigarette to be ignited and smoked.

Compared with the prior art, the present invention has the following beneficial effects:

1. The hollow support element of the present invention has a hollow cooling component 23, which can cool the flue gas while concentrating the flue gas. At the same time, the hollow cooling component 23 has a groove 231, and the groove 231 can increase the flue gas and the hollow cooling component 23 contact area, so as to achieve more effective cooling.

2. In the preferred embodiment of the present invention, the groove 231 on the hollow cooling component 23 spirally extends along the axis of the hollow support element, and the spiral extension method can change the flue gas and air contact with the hollow cooling component 23 The air flow path increases the residence time of the flue gas and air in the hollow cooling component 23, so that the flue gas and air are mixed separately, avoiding the flue gas and air from directly passing through the hollow cooling component 23 quickly, and further cooling the flue gas.

3. In the preferred embodiment of the present invention, the hollow cooling component 23 has a granular or woven strip-shaped cooling material, and the contact area between the cooling material and the flue gas is large, and the airflow channel formed by the cooling material is not a straight line, but a curve. The residence time of the flue gas in the hollow cooling component 23 is further increased, and the flue gas is prevented from directly passing through the hollow cooling component 23 quickly, and the temperature of the flue gas is further reduced.

4. The hollow cooling component 23 of the present invention is prepared by extrusion molding of a polymer material, which will not collapse during the phase change heat absorption process, avoiding the phase change material from collapsing and blocking the air flow channel after a few suction. The suction resistance is greatly increased, which affects the suction experience. At the same time, with the support of the hollow cooling component 23, the form of the cooling material can have more choices, not just the gathered polylactic acid film.

Description of the drawings

Fig. 1 is a schematic diagram of the structure of a heat-not-burn cigarette in Example 1 of the present invention;

2 is a schematic diagram of the structure of the heat-not-burn cigarette in Example 2 of the present invention;

Fig. 3 is a schematic diagram of the structure of a heat-not-burn cigarette in Example 3 of the present invention;

4 is a schematic diagram of the structure of the hollow support element of the present invention;

The name of the reference numerals in the description of the drawings: 1-smoking core material section, 2-hollow support element, 3-cooling section, 4-filter section, 21-tube wall, 22-lumen, 23-hollow cooling Components, 24-ventilation, 25-cooling material, 231-groove.

Detailed ways

The present invention will be further described in detail below in conjunction with the embodiments and the drawings. The embodiments are only for describing the present invention, rather than limiting the present invention.

Example 1

As shown in Fig. 1, a heat-not-burn cigarette of the present invention includes in sequence: a smoking core material section 1, a hollow support element 2 and a filter section 4;

The hollow support element 2 and the filter tip section 4 are wrapped by forming paper to form a tipping rod, and the smoking core material section 1 and the tipping rod are connected by tipping paper;

The length of the hollow support element 2 is 1/2 of the total length of the spout.

Wherein the hollow support element 2 contains a hollow cooling component, and the hollow support element 2 includes a tube wall 21 and a lumen 22;

The lumen 22 has a hollow cooling component 23 close to the tube wall 21, and the hollow cooling component 23 extends axially along the hollow support element and penetrates the hollow support element;

The number of the grooves 231 is 11.

The groove 231 spirally extends along the axial direction of the hollow support element.

The cross section of the groove 231 is "V" shaped.

The material of the tube wall 21 is paper.

The hollow cooling component 23 is prepared by extrusion molding of a polymer material, and the polymer material is selected from polylactic acid.

The hollow support element has a vent hole 24 penetrating the tube wall 21 and the hollow temperature cooling component 23 along its radial direction.

Wherein, the filter segment 4 is acetate fiber tow.

Wherein, the smoking core material section 1 is a rod-shaped smoking core formed by random filling of cut tobacco containing a smoking agent.

According to the cigarette sample 1 of the present embodiment, the cigarette comparative sample 1 is rolled. The other structure of the cigarette sample 1 is the same as that of the cigarette sample 1 of the present embodiment, except that the cavity 22 of the hollow support element 2 does not add a hollow cooling part. When the two were used for heating non-combustion cigarettes and smoking sets, it was found that the temperature of the smoke entering the smoker's mouth was 51°C. The smoker felt hot and the smoking experience was poor. However, the temperature of the smoke entering the mouth of the smoker in the cigarette sample 1 of this example is 37°C, and the smoker feels that the temperature is just suitable for smoking.

Therefore, the hollow support element 2 in the cigarette sample 1 of this embodiment has a strong supporting force and can take into account the cooling effect of the flue gas, and can even replace the cooling section.

Example 2

This embodiment is a heat-not-burn cigarette, which in turn includes: a smoking core material section 1, a hollow support element 2, a cooling section 3, and a filter section 4;

The hollow support element 2, the cooling section 3, and the filter tip section 4 are wrapped by forming paper to form a tip rod, the smoking core material section 1 and the tip rod are connected by tipping paper, and the hollow support element The length of 2 is 2/5 of the total length of the mouth stick.

The number of the grooves 231 is 11.

The cross section of the groove 231 is "V" shaped.

The material of the tube wall 21 is paper.

Wherein, the cooling section 3 is a gathered polylactic acid mesh film.

Wherein, the filter segment 4 is acetate fiber tow.

According to the cigarette sample 2 of the present embodiment, the cigarette comparison sample 2 is rolled. The other structure of the cigarette comparison sample 2 is the same as that of the cigarette sample 2 of this embodiment, except that the cavity 22 of the hollow support element 2 does not add a hollow cooling part. The two were used for heating non-combustion cigarettes for smoking, and it was found that the temperature of the smoke entering the smoker's mouth was 42°C. The smoker felt hot and the smoking experience was poor. However, the temperature of the smoke entering the mouth of the smoker of the cigarette sample 2 of this example was 35°C, and the smoker felt that the temperature was just suitable for smoking.

Therefore, the hollow support element 2 in the cigarette sample 1 of this embodiment has a strong supporting force and can take into account the effect of cooling the smoke.

Example 3

As shown in Fig. 3, a heat-not-burn cigarette according to the present invention includes in turn: a smoking core material section 1, a hollow support element 2 and a filter section 4;

The hollow cooling component 23 has a braided strip-shaped cooling material 25 inside, which is a braided strip-shaped polylactic acid material woven from three polylactic acid strips.

The number of the grooves 231 is 11.

The cross section of the groove 231 is "V" shaped.

The material of the tube wall 21 is paper.

Wherein, the filter segment 4 is acetate fiber tow.

Comparing the cigarette sample 1 of Example 1 with the cigarette sample 3 of Example 3, it can be seen that the only difference is that the hollow cooling component 23 of the cigarette sample 3 has a woven strip shape woven from three polylactic acid strips. Polylactic acid material, the cigarette sample 1 and cigarette sample 3 were respectively used for heating non-combustible cigarettes for smoking. It was found that the smoke temperature of the cigarette sample 3 entering the smoker’s mouth was 34°C, and it can be seen from Example 1 The temperature of the smoke entering the mouth of the smoker of the cigarette sample 1 is 37°C, so adding a cooling material into the hollow cooling component 23 can further reduce the temperature of the smoke entering the mouth of the smoker. At the same time, comparing the cigarette sample 2 of Example 2 and the cigarette sample 3 of Example 3 of the present invention, it can be seen that although the rod of the cigarette sample 3 is a binary structure that only includes the hollow support element 2 and the filter section 4 The structure, but the cooling effect on the flue gas is similar to that of the cigarette sample 2 including the hollow support element 2, the cooling section 3 and the filter section 4 of the ternary structure.

Therefore, in the cigarette sample 3 in Example 3, the cooling material is added to the hollow support element 2, which not only simplifies the structure of the cigarette stick, makes the preparation process of the cigarette stick easier, but also reduces the problem of smoke temperature Above, the nozzle rod including the dual structure of the hollow support element 2 and the filter section 4 achieves a cooling effect similar to that of the ternary structure including the hollow support element 2, the cooling section 3 and the filter section 4.

Claims

A hollow support element containing a hollow cooling component, characterized in that it comprises a tube wall (21) and a tube cavity (22);

The tube cavity (22) is provided with a hollow cooling component (23) close to the tube wall (21), and the hollow cooling component (23) extends at least partly along the axial direction of the hollow supporting element;

The hollow cooling component (23) has a groove (231) extending axially along the hollow cooling component (23), and the opening of the groove (231) faces away from the tube wall (21).
The hollow support element containing a hollow cooling component according to claim 1, wherein the hollow cooling component (23) has a granular or braided strip-shaped cooling material, and the cooling material is selected from polymer materials, The polymer material is selected from cellulose acetate, polylactic acid, polyethylene, polypropylene or polyethylene terephthalate.
The hollow support element containing a hollow temperature cooling component according to claim 1, wherein the number of the grooves (231) is N, and N is a positive integer greater than or equal to 2.
The hollow support element containing a hollow cooling component according to claim 1, wherein the groove (231) spirally extends along the axial direction of the hollow support element.
The hollow supporting element containing a hollow cooling component according to claim 1, wherein the cross section of the groove (231) is "U"-shaped, "V"-shaped or arc-shaped.
The hollow support element containing a hollow cooling component according to claim 1, wherein the material of the tube wall (21) is paper or polymer non-woven fabric, and the polymer material is selected from acetate fiber , Polylactic acid, polyethylene, polypropylene or polyethylene terephthalate.
The hollow support element containing a hollow cooling component according to claim 1, wherein the hollow cooling component (23) is extruded from a polymer material or is sprayed with polymer on the tube wall (21). Material preparation, the polymer material is selected from cellulose acetate, polylactic acid, polyethylene, polypropylene or polyethylene terephthalate.
The hollow support element containing a hollow temperature-cooling component according to claim 1, wherein the hollow support element has ventilation that penetrates the tube wall (21) and the hollow temperature-cooling component (23) along its radial direction. Hole (24).
A heat-not-burn cigarette, characterized in that it comprises in sequence: a smoking core material section (1), the hollow support element according to any one of claims 1-8, and a filter section (4);

The hollow support element and the filter tip section (4) are wrapped by forming paper to form a tip rod, and the smoking core material section (1) and the tip rod are connected by tipping paper;

The length of the hollow supporting element is 1/3-3/4 of the total length of the mouth stick.
The heat-not-burn cigarette according to claim 9, characterized in that there is a cooling section (3) between the hollow support element and the filter section (4), and the hollow support element and the cooling section (3) and the filter tip section (4) are wrapped by forming paper to form a tip rod, the smoking core material section (1) and the tip rod are connected by tipping paper, and the length of the hollow support element is 1/3-3/4 of the total length of the mouth stick.