COOLING CIGARETTE FILTER AND SMOKING PRODUCT

Abstract

A cooling cigarette filter and a smoking product are provided. The cooling cigarette filter comprises a cooling section. The cooling section is provided with one or more channels connecting two ends of the cooling section, and an inner surface of each channel is coated with a cooling material. The cooling material comprises an inorganic phase change material and PEG, and the inorganic phase change material comprises at least one of Na2CO3.10H2O, CH3COONa.3H2O, CaCl2.4H2O, and Na2SO4.10H2O. The cooling cigarette filter has the advantages of ensuring the amount of smoke and lowering the temperature of the smoke entering the mouth, especially in the cooling section. Through the combination design of the structure of the cooling stick and the type and amount of the cooling material, the smoke can flow out of a smoke generation section rapidly and smoothly.

Claims

1-10. (canceled)

11. A cooling cigarette filter, comprising a cooling section, wherein: the cooling section is provided with one or more channels connecting two ends of the cooling section; an inner surface of each channel is coated with a cooling material; the cooling material is a compound mixture of an inorganic phase change material and PEG; and the inorganic phase change material comprises at least one of Na.sub.2CO.sub.3.10H.sub.2O, CH.sub.3COONa.3H.sub.2O, CaCl.sub.2.4H.sub.2O, and Na.sub.2SO.sub.4.10H.sub.2O.

12. The cooling cigarette filter according to claim 1, wherein the PEG comprises at least one of PEG-200, PEG-400, PEG-600, PEG-800, PEG-1000, PEG-1500, PEG-2000, PEG-4000, PEG-6000, PEG-8000, PEG-10000, and PEG-20000.

13. The cooling cigarette filter according to claim 1, wherein the PEG is at least one of PEG-200, PEG-400, PEG-600, PEG-800, PEG-1000, PEG-1500, PEG-2000, PEG-4000, PEG-6000, and PEG-8000.

14. The cooling cigarette filter according to claim 1, wherein the mass ratio of the inorganic phase change material to the PEG in the cooling material is (1-2):(1-5).

15. The cooling cigarette filter according to claim 1, wherein the coating amount of the cooling material is 3-50 g/m.sup.2.

16. The cooling cigarette filter according to claim 15, wherein the coating amount of the cooling material is 5-30 g/m.sup.2.

17. The cooling cigarette filter according to claim 1, wherein the channel is a through hole or an irregular hole.

18. The cooling cigarette filter according to claim 1, wherein: the cooling section is formed by repeatedly bending or twisting a carrier in a cylindrical space; the cooling material is coated on the surface of the carrier; and the carrier is one of paper, an organic polymer film, and a non-woven fabric.

19. The cooling cigarette filter according to claim 1, wherein the cooling section is formed by bundling a plurality of cylinders, and the cooling material is coated on inner surfaces and/or outer surfaces of the cylinders.

20. A smoking product, comprising: a cooling cigarette filter and a smoke generation section connected with the cooling cigarette filter, wherein the cooling cigarette filter comprises a cooling section, wherein: the cooling section is provided with one or more channels connecting two ends of the cooling section; an inner surface of each channel is coated with a cooling material; the cooling material is a compound mixture of an inorganic phase change material and PEG; and the inorganic phase change material comprises at least one of Na.sub.2CO.sub.3.10H.sub.2O, CH.sub.3COONa.3H.sub.2O, CaCl.sub.2.4H.sub.2O, and Na.sub.2SO.sub.4.10H.sub.2O.

21. The smoking product according to claim 20, wherein the PEG comprises at least one of PEG-200, PEG-400, PEG-600, PEG-800, PEG-1000, PEG-1500, PEG-2000, PEG-4000, PEG-6000, PEG-8000, PEG-10000, and PEG-20000.

22. The smoking product according to claim 20, wherein the PEG is at least one of PEG-200, PEG-400, PEG-600, PEG-800, PEG-1000, PEG-1500, PEG-2000, PEG-4000, PEG-6000, and PEG-8000.

23. The smoking product according to claim 20, wherein the mass ratio of the inorganic phase change material to the PEG in the cooling material is (1-2):(1-5).

24. The smoking product according to claim 20, wherein the coating amount of the cooling material is 3-50 g/m.sup.2.

25. The smoking product according to claim 24, wherein the coating amount of the cooling material is 5-30 g/m.sup.2.

26. The smoking product according to claim 20, wherein the channel is a through hole or an irregular hole.

27. The smoking product according to claim 20, wherein: the cooling section is formed by repeatedly bending or twisting a carrier in a cylindrical space; the cooling material is coated on a surface of the carrier; and the carrier is one of paper, an organic polymer film, and a non-woven fabric.

28. The smoking product according to claim 20, wherein the cooling section is formed by bundling a plurality of cylinders, and the cooling material is coated on inner surfaces and/or outer surfaces of the cylinders.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG. 1 is a schematic structural diagram of a cigarette according to the present invention.

[0043] FIG. 2 is a three-dimensional sectional view (exploded view) of the cigarette according to the present invention.

[0044] FIG. 3 is a partial enlarged three-dimensional view of a cooling stick and a smoke generation section in FIG. 1.

[0045] FIG. 4 is a partial enlarged three-dimensional sectional view of the cooling stick and the smoke generation section in FIG. 1.

[0046] FIG. 5 is a schematic structural diagram (cross-sectional view) of a cooling section in Embodiment 17 of the present invention.

DETAILED DESCRIPTION OF EMBODIMENTS

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments in the present invention and the features in the embodiments can be combined with each other without conflicts. For ease of narrative, the terms “upper”, “lower”, “left” and “right” described below are only consistent with the upper, lower, left and right directions of the drawings, and do not limit the structure.

Embodiment 1

[0048] As shown in FIG. 1, the smoking product in this embodiment is a heat-not-burn cigarette, including a filter section 1, a cooling section 2 and a smoke generation section 3 connected in sequence. The filter section is composed of a special cellulose acetate filter stick with cooling and low smoke entrapping functions, the cooling section is formed by wrapping a cooling stick with wrap paper 4, and the cooling stick is mainly formed by paper coated with a phase change cooling material.

[0049] The cooling stick has a plurality of channels 6 connecting two ends of the cooling stick, and the total specific surface area of the plurality of channels is 20% to 30% of the surface area of the cooling paper.

[0050] The paper is cellulose paper with strong moisture absorption capacity but weak tar absorption capacity. The basis weight of the paper is 80 g/m.sup.2.

[0051] The cooling material is CH.sub.3COONa.3H.sub.2O. The coating amount of the cooling material is 5 g/m.sup.2.

[0052] After smoke enters the cooling section, it is in full contact with the phase change cooling material, which improves the cooling effect of the smoke, and also facilitates the rapid and smooth passing of the smoke generated in the cigarette.

[0053] The filter section has a length of 7 mm, the cooling section has a length of 26 mm, and the smoke generation section has a length of 12 mm.

[0054] Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette for smoking test, and a thermocouple is used to monitor the temperature, the maximum temperature of smoke entering the mouth is 60° C., which is 1° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 12.0 mg/cig, which is 3.0 mg/cig lower than that of the iQOS smoke; the amount of smoke entering the mouth is increased to a certain extent, and the cooling and low smoke entrapping effects are substantially achieved (see Table 1).

Embodiment 2

[0055] Embodiment 1 is repeated, and only the coating amount of the cooling material is increased to 10 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 50° C., which is 11° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.5 mg/cig, which is only 0.5 mg/cig lower than that of the iQOS smoke; the amount of smoke entering the mouth is increased to a certain extent, and the cooling and low smoke entrapping effects are substantially achieved (see Table 1).

Embodiment 3

[0056] Embodiment 1 is repeated, and only the coating amount of the cooling material is increased to 20 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 43° C., which is 18° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 15.2 mg/cig, which is 0.2 mg/cig higher than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 4

[0057] Embodiment 1 is repeated, only the cooling material is changed to Na.sub.2CO.sub.3.10H.sub.2O, and the coating amount of the phase change material is increased to 20 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 48° C., which is 13° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.4 mg/cig, which is 0.6 mg/cig lower than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 5

[0058] Embodiment 1 is repeated, only the cooling material is changed to CaCl.sub.2.4H.sub.2O, and the coating amount of the phase change material is increased to 20 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 49° C., which is 12° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.5 mg/cig, which is 0.5 mg/cig lower than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 6

[0059] Embodiment 1 is repeated, only the cooling material is changed to Na.sub.2SO.sub.4.10H.sub.2O, and the coating amount of the phase change material is increased to 20 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 50° C., which is 11° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.3 mg/cig, which is 0.7 mg/cig lower than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 7

[0060] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of CaCl.sub.2.4H.sub.2O and Na.sub.2SO.sub.4.10H.sub.2O, the weight ratio of the two is 2:1, and the coating amount of the cooling material is 25 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 45° C., which is 16° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.6 mg/cig, which is 0.4 mg/cig lower than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 8

[0061] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of CH.sub.3COONa.3H.sub.2O and PEG4000, the weight ratio of the two is 1:1, and the coating amount of the cooling material is 3 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 59° C., which is 2° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 12.2 mg/cig, which is 2.8 mg/cig lower than that of the iQOS smoke; the amount of smoke entering the mouth is increased to a certain extent, and the cooling and low smoke entrapping effects are substantially achieved (see Table 1).

Embodiment 9

[0062] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of CH.sub.3COONa.3H.sub.2O, PEG600 and PEG4000, the weight ratio of the three is 1:2:2, and the coating amount of the cooling material is 5 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 51° C., which is 10° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.5 mg/cig, which is 0.5 mg/cig lower than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 10

[0063] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of CH.sub.3COONa.3H.sub.2O and PEG2000, the weight ratio of the two is 1:1, and the coating amount of the cooling material is 5 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 53° C., which is 8° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.2 mg/cig, which is 0.8 mg/cig lower than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 11

[0064] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of CH.sub.3COONa.3H.sub.2O and PEG2000, the weight ratio of the two is 1:1, and the coating amount of the cooling material is 20 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 41° C., which is 20° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 15.3 mg/cig, which is 0.3 mg/cig higher than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 12

[0065] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of CaCl.sub.2.4H.sub.2O and PEG2000, the weight ratio of the two is 1:1, and the coating amount of the cooling material is 20 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 45° C., which is 16° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 15.1 mg/cig, which is 0.1 mg/cig higher than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 13

[0066] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of Na.sub.2SO.sub.4.10H.sub.2O and PEG2000, the weight ratio of the two is 1:1, and the coating amount of the cooling material is 20 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 46° C., which is 15° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.8 mg/cig, which is 0.2 mg/cig lower than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 14

[0067] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of CH.sub.3COONa.3H.sub.2O and PEG6000, the weight ratio of the two is 2:1, and the coating amount of the cooling material is 25 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 40° C., which is 21° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 15.1 mg/cig, which is 0.1 mg/cig higher than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 15

[0068] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of Na.sub.2CO.sub.3.10H.sub.2O, PEG1000 and PEG8000, the weight ratio of the three is 2:2:1, and the coating amount of the cooling material is 20 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 45° C., which is 16° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 14.7 mg/cig, which is 0.3 mg/cig lower than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 16

[0069] Embodiment 1 is repeated, the cooling material is changed to a compound mixture of CaCl.sub.2.4H.sub.2O and PEG6000, the weight ratio of the two is 1:1, and the coating amount of the cooling material is 40 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 44° C., which is 17° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 15.2 mg/cig, which is 0.2 mg/cig higher than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Embodiment 17

[0070] Embodiment 11 is repeated, only the cooling section is changed to be formed by wrapping a plurality of hollow cylindrical sticks 5 with wrap paper 4, surfaces of the cylindrical sticks are coated with the cooling material, the cylindrical stick has an outer diameter of 0.4 mm, and the smoke channels are mainly composed of through holes in the cylindrical sticks and gaps between the cylindrical sticks (see FIG. 5). Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 37° C., which is 24° C. lower than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is 15.8 mg/cig, which is 0.8 mg/cig higher than that of the iQOS smoke; and the cooling and low smoke entrapping effects are achieved. The smoking sensory quality of the smoke is significantly improved (see Table 1).

Comparative Example 1

[0071] Embodiment 1 is repeated, and only the coating amount of the cooling material is decreased to 4 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 64° C., which is 3° C. higher than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is reduced to 8.2 mg/cig, which is 6.8 mg/cig lower than that of the iQOS smoke; the amount of smoke entering the mouth is obviously decreased, and the cooling and low smoke entrapping effects cannot be achieved (see Table 1).

Comparative Example 2

[0072] Embodiment 1 is repeated, and only the cooling material is changed to Na.sub.2CO.sub.3.10H.sub.2O. The coating amount of the cooling material is 4 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 65° C., which is 4° C. higher than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is reduced to 7.5 mg/cig, which is 7.5 mg/cig lower than that of the iQOS smoke; the amount of smoke entering the mouth is obviously decreased, and the cooling and low smoke entrapping effects cannot be achieved (see Table 1).

Comparative Example 3

[0073] Embodiment 1 is repeated, and only the cooling material is changed to CaCl.sub.2.4H.sub.2O. The coating amount of the cooling material is 4 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 66° C., which is 5° C. higher than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is reduced to 7.6 mg/cig, which is 7.4 mg/cig lower than that of the iQOS smoke; the amount of smoke entering the mouth is obviously decreased, and the cooling and low smoke entrapping effects cannot be achieved (see Table 1).

Comparative Example 4

[0074] Embodiment 1 is repeated, and only the cooling material is changed to Na.sub.2SO.sub.4.10H.sub.2O. The coating amount of the cooling material is 4 g/m.sup.2. Through comparative studies, it is found that when the cooling section designed in the present invention is used to replace a creased PLA film cooling section in an iQOS cigarette, the maximum temperature of smoke entering the mouth is 65° C., which is 4° C. higher than the temperature of iQOS smoke entering the mouth; meanwhile, the total particulate matter in the smoke is reduced to 7.3 mg/cig, which is 7.7 mg/cig lower than that of the iQOS smoke; the amount of smoke entering the mouth is obviously decreased, and the cooling and low smoke entrapping effects cannot be achieved (see Table 1).

TABLE-US-00001 TABLE 1 Maximum temperature of smoke entering the mouth, total particulate matter and amount of smoke of heat-not-bum cigarettes Maximum temperature Total of smoke entering the particulate Amount of Sample mouth (° C.) matter (mg/cig) smoke iQOS used as 61 15.0 Large control Embodiment 1 60 12.0 Relatively large Embodiment 2 50 14.5 Large Embodiment 3 43 15.2 Large Embodiment 4 48 14.4 Large Embodiment 5 49 14.5 Large Embodiment 6 50 14.3 Large Embodiment 7 45 14.6 Large Embodiment 8 59 12.2 Relatively large Embodiment 9 51 14.5 Large Embodiment 10 53 14.2 Large Embodiment 11 41 15.3 Large Embodiment 12 45 15.1 Large Embodiment 13 46 14.8 Large Embodiment 14 40 15.1 Large Embodiment 15 45 14.7 Large Embodiment 16 44 15.2 Large Embodiment 17 37 15.8 Large Comparative 64 8.2 Small Example 1 Comparative 65 7.5 Small Example 2 Comparative 66 7.6 Small Example 3 Comparative 65 7.3 Small Example 4

[0075] The contents illustrated by the above embodiments should be understood as these embodiments are merely used for illustrating the present invention more clearly, rather than limiting the scope of the present invention. Various equivalent modifications made to the present invention by those skilled in the art after reading the present invention all fall within the scope defined by the appended claims of the present application.