VARIABLE-VENTILATION FILTER TIP AND CIGARETTE

Abstract

The invention discloses a variable-ventilation filter tip and a cigarette. The filter tip includes a filter element and a coating layer. The coating layer wraps the filter element. The filter element includes a smoke inlet end and a smoke release end. A phase-change ventilation area and a non-phase-change ventilation area are arranged on the coating layer, a plurality of first ventilation holes are arranged in the phase-change ventilation area, and a plurality of second ventilation holes are arranged in the non-phase-change ventilation area. Outside air penetrates through the coating layer through the first ventilation holes and the second ventilation holes to enter a part of the filter element. A part in the filter element close to the smoke inlet end is provided with a starch tube. A phase-change material is filled in the first ventilation hole. A phase-change temperature of the phase-change material ranges from 45° C. to 60° C.

Claims

1. A variable-ventilation filter tip, comprising a filter element and a coating layer, wherein the coating layer wraps the filter element; and the filter element comprises a smoke inlet end and a smoke release end; a phase-change ventilation area and a non-phase-change ventilation area are arranged on the coating layer, a plurality of first ventilation holes are arranged in the phase-change ventilation area, and a plurality of second ventilation holes are arranged in the non-phase-change ventilation area; outside air passes through the coating layer through the first ventilation holes and the second ventilation holes respectively to penetrate into a part of the filter element; a phase-change material is filled in the first ventilation hole; a part in the filter element close to the smoke inlet end is provided with a starch tube; and a phase-change temperature of the phase-change material ranges from 45° C. to 60° C.

2. The variable-ventilation filter tip according to claim 1, wherein the phase-change ventilation area is close to the smoke inlet end.

3. The variable-ventilation filter tip according to claim 2, wherein a distance between the phase-change ventilation area and the smoke inlet end is not less than a distance between the phase-change ventilation area and the non-phase-change ventilation area.

4. The variable-ventilation filter tip according to claim 3, wherein the phase-change temperature of the phase-change material ranges from 55° C. to 60° C.

5. The variable-ventilation filter tip according to claim 1, wherein the non-phase-change ventilation area is close to the smoke inlet end.

6. The variable-ventilation filter tip according to claim 5, wherein a distance between the non-phase-change ventilation area and the smoke inlet end is no less than a distance between the phase-change ventilation area and the non-phase-change ventilation area.

7. The variable-ventilation filter tip according to claim 6, wherein the phase-change temperature of the phase-change material ranges from 45° C. to 55° C.

8. The variable-ventilation filter tip according to claim 2, wherein the phase-change ventilation area is located on the starch tube.

9. The variable-ventilation filter tip according to claim 1, wherein when only the second ventilation holes are ventilated, a total ventilation rate of a cigarette ranges from 40% to 60%; and when the first ventilation holes and the second ventilation holes are ventilated at the same time, the total ventilation rate of the cigarette is not lower than 70%.

10. A cigarette, comprising the variable-ventilation filter tip according to claim 1.

11. The variable-ventilation filter tip according to claim 2, wherein when only the second ventilation holes are ventilated, a total ventilation rate of a cigarette ranges from 40% to 60%; and when the first ventilation holes and the second ventilation holes are ventilated at the same time, the total ventilation rate of the cigarette is no lower than 70%.

12. The variable-ventilation filter tip according to claim 5, wherein when only the second ventilation holes are ventilated, a total ventilation rate of a cigarette ranges from 40% to 60%; and when the first ventilation holes and the second ventilation holes are ventilated at the same time, the total ventilation rate of the cigarette is no lower than 70%.

13. A cigarette, comprising the variable-ventilation filter tip according to claim 2.

14. A cigarette, comprising the variable-ventilation filter tip according to claim 3.

15. A cigarette, comprising the variable-ventilation filter tip according to claim 4.

16. A cigarette, comprising the variable-ventilation filter tip according to claim 5.

17. A cigarette, comprising the variable-ventilation filter tip according to claim 6.

18. A cigarette, comprising the variable-ventilation filter tip according to claim 7.

19. A cigarette, comprising the variable-ventilation filter tip according to claim 8.

20. A cigarette, comprising the variable-ventilation filter tip according to claim 9.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a schematic diagram of a three-dimensional structure of the present invention.

[0030] FIG. 2 is a schematic diagram of a front view structure of the present invention.

[0031] FIG. 3 is a structural schematic diagram of the present invention in a use state.

[0032] FIG. 4 is a structural schematic diagram of the present invention in another use state.

[0033] FIG. 5 is a structural schematic diagram of a cooling section of the present invention.

[0034] In the drawings: 1 refers to filter element; 11 refers to smoke inlet end; 12 refers to smoke release end; 14 refers to starch tube; 15 refers to hollow cavity; 2 refers to coating layer; 21 refers to phase-change ventilation area; 22 refers to non-phase-change ventilation area; 211 refers to phase-change material; 212 refers to first ventilation hole; and 221 refers to second ventilation hole.

DESCRIPTION OF THE EMBODIMENTS

[0035] The present invention will be further described below with reference to specific implementations.

Embodiment 1

[0036] As shown in FIG. 1 to FIG. 5, this embodiment provides a variable-ventilation filter tip, which includes a filter element 1 and a coating layer 2. The coating layer 2 wraps the filter element 1. The filter element 1 includes a smoke inlet end 11 and a smoke release 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 in the phase-change ventilation area, and a plurality of second ventilation holes 221 are arranged in the non-phase-change ventilation area 22. Outside air penetrates through the coating layer 2 through the first ventilation holes 212 and the second ventilation holes 221 to enter a part of the filter element 13. A phase-change material 211 is filled in the first ventilation hole 212. A starch tube 14 is arranged in a part of the filter element close to the smoke inlet end, and the starch tube 14 is provided with a hollow cavity 15. A phase-change temperature of the phase-change material 211 ranges from 45° C. to 60° C.

[0037] A specific opening manner of the first ventilation holes 212 is that: the phase-change material 211 contacts high-temperature smoke and undergoes phase change. Meanwhile, because a pressure at a center of the phase-change material 211 is high due to a sucking force, a state of the phase-change material 211 changes from being closed to gradually opening from the center to both sides, thus realizing a process of increasing the ventilation volume of the phase-change ventilation area with the increase of temperature.

[0038] When the phase-change ventilation area 21 is close to the smoke inlet end 11, the phase-change ventilation area 21 first senses a temperature change, which is beneficial to control the ventilation volume and has a good cooling effect. At this time, the phase-change temperature of the phase-change material 211 is in a range of 55° C. to 60° C. When the non-phase-change ventilation area 221 is close to the smoke inlet end, the phase-change temperature of the phase-change material 211 is in a range of 45° C. to 55° C., which is relatively low, and such structure is convenient for processing and manufacturing. However, no matter which one of the above two ventilation area arrangements is employed, the objective of “one smoke and two sucking manners” can be achieved, but each arrangement has its own preference, either for cooling effect, or for processing and manufacturing. In this embodiment, a distance between the phase-change ventilation area 21 and the smoke inlet end 11 is not less than a distance between the phase-change ventilation area 21 and the non-phase-change ventilation area 22, and such arrangement is conducive to improving a taste of the smoke. In this case, the phase-change material 211 undergoes phase change at 55° C. to increase the ventilation volume, and a ventilation rate is 80%.

[0039] The coating layer 2 is provided with the phase-change ventilation area 21 and the non-phase-change ventilation area 22. The phase-change material 211 is arranged on the phase-change ventilation area 21. In this embodiment, the plurality of first ventilation holes 212 are arranged in the phase-change ventilation area 21, and the phase-change material 211 is filled in the first ventilation hole 212. A structure of the ventilation hole is easy to process. On one hand, filling the phase-change material 211 in the hole will not increase a thickness of the coating layer 2, which makes the filter natural and beautiful. On the other hand, the phase-change material 211 has a high degree of binding in the hole and is not easy to fall off. The second ventilation holes 221 are evenly arranged in the non-phase-change ventilation area 22.

[0040] The phase-change material 211 can undergo phase change at a temperature condition ranging from 45° C. to 60° C. The phase-change temperature of the phase-change material 211 determines a sensation temperature of the smoke entering a user, and needs of the user may be satisfied only when the phase-change material is melted in a suitable temperature range for ventilating and cooling. Therefore, it is more suitable to use the phase-change material with the phase-change temperature ranging from 50° C. to 55° C. In this embodiment, the phase-change temperature ranges from 50° C. to 55° C., and the employed phase-change material includes constituents of a starch, a polylactic acid, and a polyol, which has the advantages of convenient combination and easy circulation. In order to meet the requirement that the ventilation volume of the phase-change material changes in time with the change of temperature, a thickness of the phase-change material cannot be too thick. In this embodiment, the thickness of the phase-change material ranges from 50 μm to 500 μm. Specifically in this embodiment, the thickness of the phase-change material is 300 μm. In addition, when only the non-phase-change ventilation area 22 is ventilated, a total ventilation rate of a cigarette is in a range of 30% to 60%. When the phase-change ventilation area 21 and the non-phase-change ventilation area 22 are ventilated at the same time, the ventilation rate of the filter tip is not lower than 70%, and such structure can provide a better and more stable taste of smoke. If the phase-change ventilation area 21 and the non-phase-change ventilation area 22 are of ventilation hole structures and evenly distributed on the coating layer 2, quantities, aperture sizes and arrangements of these ventilation holes may be adjusted according to actual needs to meet the ventilation rate requirements of the cigarette. An effect of reducing the temperature of the smoke can also be achieved by adjusting positions of the first ventilation holes.

[0041] A cigarette applying the above-mentioned filter may be used in a traditional sucking manner by ignition, and may also be applied to a sucking manner of non-ignition heating.

[0042] In the present invention, the cigarette further includes a tobacco section, and the filter tip is connected with the tobacco section.

[0043] A working principle of the present invention is as follows.

[0044] When the cigarette is sucked in the ignition manner, the phase-change ventilation area 21 is kept in a closed state. The non-phase-change ventilation area 22 increases a certain ventilation volume, which is enough to reduce the temperature at which cut tobaccos are released into a human body. When the cigarette is sucked in the heat-not-burn manner, the temperature of the smoke entering the filter tip is higher than that when smoking in the ignition manner. At this time, the phase-change material 211 in the phase-change ventilation area 21 undergoes phase change. The phase-change ventilation area 21 is opened to increase the ventilation volume. At this time, the total ventilation rate of the cigarette can reach more than 70%.

Embodiment 2

[0045] As shown in FIG. 4, this embodiment is a second embodiment of the present invention, which is basically the same as Embodiment 1, except that the non-phase-change ventilation area 22 is close to the smoke inlet end 11, and the distance between the non-phase-change ventilation area 22 and the smoke inlet end 11 is not less than the distance between the phase-change ventilation area 21 and the non-phase-change ventilation area 22. At this moment, the phase-change material 211 undergoes phase change at 50° C. to increase the ventilation volume, and the total ventilation rate of the cigarette is 75%.

[0046] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, but are not intended to limit the implementations of the present invention. For those of ordinary skills in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary or possible to exhaust all the implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall all fall within the scope of protection claimed by the present invention.