Gel wire composite filter rod comprising cuprous ion-based MOFs-gel material with CO specific adsorption capacity

Abstract

The present invention belongs to the technical field of cigarette auxiliary materials, and relates to a composite filter rod, and in particular to a gel line composite filter rod comprising a cuprous ion-based MOFs-gel material having a specific adsorption capacity for CO. A filter rod is formed by wrapping a cigarette filament bundle with a forming paper, and a composite gel is provided in the middle of the cigarette filament bundle. After solidification, a gel line is formed in the center of the filter rod. The composite gel is formed by heating and melting a phase change gel, and then slowly sprinkling an ultrafine cuprous ion-based MOFs with a mesh number of more than 120 meshes, stirring evenly, and the diameter of the filter rod is between 4.5 and 9.5 mm, and the length is between 45 and 160 mm. The composite filter rod disclosed in the present invention has a simple preparation process, and the composite filter rod obtained can efficiently adsorb CO in smoke, significantly reduce the content of CO in smoke entering the oral cavity, and the adsorption rate can reach more than 15%. Due to the thermal sensitivity of the phase change gel in the cuprous ion-based MOFs-gel composite material, the smoke temperature can be significantly reduced, and the effect on the taste sensory perception is not great, and it has an obvious harm reduction effect.

Description

Technical Field

[0001] The invention belongs to the technical field of cigarette auxiliary materials, relates to a composite filter rod, and in particular to a gel wire composite filter rod comprising a cuprous ion-based MOFs-gel material with CO specific adsorption capacity. Background Art

[0002] After a traditional cigarette is lit, the tobacco continues to release smoke due to incomplete combustion; heated tobacco products use high temperature to roast the tobacco bomb to release smoke. These are the main ways to produce CO in the smoke. Excessive inhalation of CO is harmful to the human body.

[0003] Common ways of adsorbing CO in the cigarette industry include physical interception of filters and adsorption of functional particles. Physical interception is when smoke passes through the filter, CO flows inside the filter, and constantly collides with the filter tow during its movement, thus being intercepted; functional particle adsorption, the particles used are mostly porous particles, which have the characteristics of many internal channels, large specific surface area, and strong adsorption capacity. When CO flows in the internal channels, due to the long movement path, the kinetic energy is consumed and retained inside the functional particles, thus being adsorbed and not inhaled into the mouth.

[0004] Both of the above methods have disadvantages: the physical interception method has low interception efficiency because CO is a small molecule, and the gaps between the tow fibers in the filter are large, so CO can pass through the gaps and cannot be intercepted; the functional particles are not selective in their adsorption. While adsorbing CO, they also adsorb most of the smoke substances, which reduces the smoke quality and affects the smoking taste. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to disclose a gel wire composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity.

[0006] A gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity is formed into a filter rod by wrapping a tobacco strand with forming paper, a composite gel is arranged in the middle of the tobacco strand, and a gel line is formed in the center of the filter rod after solidification, the composite gel is formed by heating and melting a phase change gel, slowly sprinkling ultrafine cuprous ion-based MOFs with a mesh size of more than 120 meshes, and stirring evenly, the diameter of the filter rod is between 4.5 and 9.5 mm, and the length is between 45 and 160 mm.

[0007] In a preferred disclosed example of the present invention, in a thin filter rod with a filter rod diameter less than or equal to 5.5 mm, the added amount of the composite gel is between 0.1 and 1.2 mg / mm.

[0008] In a preferred disclosed example of the present invention, in a medium-branch filter rod with a filter rod diameter greater than 5.5 mm and less than or equal to 7.0 mm, the added amount of the composite gel is between 0.1 and 2.5 mg / mm.

[0009] In a preferred disclosed example of the present invention, in a thick filter rod with a filter rod diameter greater than 7 mm, the added amount of the composite gel is between 0.1 and 5 mg / mm.

[0010] In a preferred disclosed example of the present invention, the tobacco filament bundle is cellulose acetate or polypropylene filament bundle.

[0011] The present invention can also compound the gel line composite filter rod with a non-granular filter rod.

[0012] Furthermore, the filter rod 1 is a gel-line filter rod, and the filter rod 2 is a non-granular filter rod.

[0013] Furthermore, the composite structure is filter rod 1 + filter rod 2, wherein the length of filter rod 1 is 5 to 30 mm, and the length of filter rod 2 is 5 to 30 mm.

[0014] The cuprous ion-based MOFs-gel material with CO specific adsorption disclosed in the present invention is prepared by mixing a cuprous ion-based MOFs material and a phase change gel in a mass ratio of 30-60:60-100, wherein the cuprous ion-based MOFs is a network metal organic framework material, i.e., Cu(I)-MOFs; the phase change gel is composed of a phase change gel, a curing agent and a lubricant, and the mass ratio of the phase change gel: the curing agent: the lubricant is 70-90:15-30:10-15.

[0015] In a preferred disclosed example of the present invention, the phase change gel is composed of phase change gel: curing agent: lubricant in a mass ratio of 90:15:10.

[0016] In the preferred disclosed examples of the present invention, the phase change gel includes but is not limited to one or more of polyethylene glycol (PEG), gelatin, paraffin-graphite composite, and stearic acid-bentonite nano-mixture.

[0017] In a preferred disclosed example of the present invention, the phase change gel is polyethylene glycol (PEG) with a molecular weight of 4000 and 6000, and the mass ratio of PEG-4000:PEG-6000 is 6-9:1-4.

[0018] Furthermore, the phase change gel has a mass ratio of PEG-4000:PEG-6000 of 8:2.

[0019] In the preferred disclosed examples of the present invention, the curing agent includes but is not limited to one or more of glyceryl monostearate and glyceryl tristearate.

[0020] Furthermore, the curing agent is glyceryl monostearate.

[0021] In a preferred disclosed example of the present invention, the lubricant includes but is not limited to one or more of hydrogenated vegetable oil, propylene glycol, beeswax, and palm wax.

[0022] In a preferred disclosed example of the present invention, the lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil: beeswax is 1-3:7-9.

[0023] Furthermore, the lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil to beeswax is 2:8.

[0024] The composite material disclosed in the present invention has a softening temperature between 45 and 55°C. When the temperature exceeds 55°C, the composite material begins to melt. When the temperature exceeds 65°C, the composite material completely melts, and the cuprous ions (Cu + )-based MOFs materials are completely exposed to flue gas.

[0025] The present invention defines the CO adsorption rate as:

[0026]

[0027] Beneficial Effects

[0028] The composite filter stick disclosed in the present invention has a simple preparation process and does not require modification of the existing filter stick forming equipment. The prepared composite filter stick can efficiently adsorb CO in smoke and significantly reduce the content of CO in smoke entering the oral cavity, with an adsorption rate of more than 15%. Due to the thermal sensitivity of the phase change gel in the cuprous ion-based MOFs-gel composite material, the smoke temperature can be significantly reduced, with little effect on the taste sensory organ, and has a significant harm reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 . A gel line filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity;

[0030] Figure 2 . A gel line binary composite filter rod comprising a cuprous ion-based MOFs gel material having a CO specific adsorption capacity;

[0031] Figure 3 . A gel line acetate binary composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity;

[0032] Figure 4 . A gel line capsule binary composite filter rod comprising a cuprous ion-based MOFs gel material having a CO specific adsorption capacity;

[0033] Figure 5. A gel line hollow tube binary composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity;

[0034] Figure 6 . A gel-wire core-wire binary composite filter rod comprising a cuprous ion-based MOFs gel material having a CO-specific adsorption capacity;

[0035] The components are: 1. Forming paper; 2. Gel line; 3. Filter rod 1; 4. Filter rod 2; 5. Filter rod 3;

[0036] 6. Filter rod 4; 7. Filter rod 5; 8. Filter rod 6. DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with the embodiments so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0038] Example 1

[0039] A gel line composite filter rod containing cuprous ion-based MOFs gel material with CO specific adsorption capacity is formed into a filter rod by wrapping a tobacco strand with a forming paper 1, a composite gel is arranged in the middle of the tobacco strand, and a gel line 2 is formed in the center of the filter rod after solidification. The composite gel is formed by heating and melting a phase change gel, slowly sprinkling ultrafine cuprous ion-based MOFs with a mesh size of more than 120 meshes, and stirring evenly. The diameter of the filter rod is 4.8 mm and the length is 90 mm.

[0040] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0041] By the same steps, a common acetate filter rod with the same structure as that of the present embodiment was prepared as control sample 1.

[0042] Example 2

[0043] A gel line composite filter rod containing a cuprous ion-based MOFs gel material with CO specific adsorption capacity, wherein a cigarette filament bundle is wrapped with a forming paper 1 to form a filter rod, a composite gel is arranged in the middle of the cigarette filament bundle, and a gel line 2 is formed in the center of the filter rod after solidification, and the composite gel is formed by heating and melting a phase change gel, slowly sprinkling ultrafine cuprous ion-based MOFs with a mesh size of more than 120 meshes, and stirring evenly; then, a cuprous ion-based MOFs-gel composite filter rod (filter rod 1) and a acetate filter rod (filter rod 3) are composited to form a gel composite material acetate binary composite filter rod ( Figure 3 ). The composite structure is 15mm (gel rod) + 15mm (acetate filter rod), and the filter rod diameter is 5.40mm.

[0044] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0045] By the same steps, a common acetate filter rod with the same structure as that of this embodiment was prepared as control sample 2.

[0046] Example 3

[0047] A gel line composite filter rod containing a cuprous ion-based MOFs gel material with CO specific adsorption capacity is formed into a filter rod by wrapping a tobacco strand with a forming paper 1, a composite gel is arranged in the middle of the tobacco strand, and a gel line 2 is formed in the center of the filter rod after solidification, and the composite gel is formed by heating and melting a phase change gel, slowly sprinkling ultrafine cuprous ion-based MOFs with a mesh size of more than 120 meshes, and stirring evenly; and then the cuprous ion-based MOFs-gel composite filter rod (filter rod 1) and a capsule filter rod (filter rod 4) are composited to form a gel composite capsule binary composite filter rod ( Figure 4 ). The composite structure is 10mm (gel stick) + 20mm (capsule stick). The diameter of the filter stick is 6.30mm and the length is 30mm.

[0048] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0049] By the same steps, a common acetate filter rod with the same structure as that of the present embodiment was prepared as control sample 3.

[0050] Example 4

[0051] A gel line composite filter rod containing a cuprous ion-based MOFs gel material with CO specific adsorption capacity, wherein a cigarette filament bundle is wrapped with a forming paper 1 to form a filter rod, a composite gel is arranged in the middle of the cigarette filament bundle, and a gel line 2 is formed in the center of the filter rod after solidification, and the composite gel is formed by heating and melting a phase change gel, slowly sprinkling ultrafine cuprous ion-based MOFs with a mesh size of more than 120 meshes, and stirring evenly; then, a cuprous ion-based MOFs-gel composite filter rod (filter rod 1) and an empty tube filter rod (filter rod 5) are composited to form a gel composite material empty tube binary composite filter rod ( Figure 5 ). The composite structure is 30mm (gel rod) + 28 (empty tube rod). The diameter of the filter rod is 7.0mm and the length is 58mm.

[0052] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0053] By the same steps, a common acetate filter rod with the same structure as that of the present embodiment was prepared as control sample 4.

[0054] Example 5

[0055] A gel-line composite filter rod containing a cuprous ion-based MOFs gel material with CO-specific adsorption capacity is formed into a filter rod by wrapping a tobacco strand with a forming paper 1, a composite gel is arranged in the middle of the tobacco strand, and a gel line 2 is formed in the center of the filter rod after solidification, and the composite gel is formed by heating and melting a phase change gel, slowly sprinkling ultrafine cuprous ion-based MOFs with a mesh size of more than 120, and stirring evenly; and then the cuprous ion-based MOFs-gel composite filter rod (filter rod 1) and a core wire filter rod (filter rod 6) are composited to form a gel composite material core wire binary composite filter rod ( Figure 6 ). The composite structure is 10mm (gel rod) + 25 (core wire rod), the diameter of the filter rod is 8.0mm and the length is 35mm.

[0056] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0057] By the same steps, a common acetate filter rod with the same structure as that of the present embodiment was prepared as control sample 5.

[0058] The prepared samples and control samples were placed in an automatic smoking machine, the number of puffs and the smoke inhalation volume were set the same, and the CO content in the smoke was measured. The test results are as follows:

[0059] Table 1. CO adsorption rate

[0060]

[0061] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the specification of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity, wherein a tobacco filament bundle is wrapped with a forming paper (1) to form a filter rod, a composite gel is provided in the middle of the tobacco filament bundle, and a gel line (2) is formed in the center of the filter rod after solidification, characterized in that: The composite gel is prepared by heating and melting a phase change gel, slowly sprinkling ultrafine cuprous ion-based MOFs with a mesh size of more than 120, and stirring evenly, wherein the cuprous ion-based MOFs are a network metal organic skeleton material, namely Cu(I)-MOFs; the phase change gel is composed of a phase change gel, a curing agent and a lubricant, and the mass ratio of the phase change gel: the curing agent: the lubricant is 70-90:15-30:10-15; the diameter of the filter rod is between 4.5 and 9.5 mm, and the length is between 45 and 160 mm.

2. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 1, characterized in that: The phase change gel is composed of phase change gel: curing agent: lubricant in a mass ratio of 90:15:

10.

3. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 1, characterized in that: The phase change gel comprises one or more of polyethylene glycol PEG, gelatin, paraffin-graphite complex, and stearic acid-bentonite nano-mixture.

4. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 3, characterized in that: The phase-change gel is polyethylene glycol PEG with a molecular weight of 4000 and 6000, and the mass ratio of PEG-4000:PEG-6000 is 6-9:1-4.

5. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 4, characterized in that: The phase change gel has a mass ratio of PEG-4000:PEG-6000 of 8:

2.

6. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 1, characterized in that: The curing agent includes one or more of glyceryl monostearate and glyceryl tristearate.

7. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 6, characterized in that: The curing agent is glyceryl monostearate.

8. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 1, characterized in that: The lubricant includes one or more of hydrogenated vegetable oil, propylene glycol, beeswax, and palm wax.

9. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 8, characterized in that: The lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil to beeswax is 1-3:7-9.

10. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 9, characterized in that: The lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil to beeswax is 2:

8.

11. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 1, characterized in that: In a thin filter rod with a filter rod diameter of less than or equal to 5.5 mm, the added amount of the composite gel is between 0.1 and 1.2 mg / mm.

12. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 1, characterized in that: In a medium-branch filter rod with a diameter greater than 5.5 mm and less than or equal to 7.0 mm, the added amount of the composite gel is between 0.1 and 2.5 mg / mm.

13. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 1, characterized in that: In a thick filter rod with a filter rod diameter greater than 7 mm, the added amount of the composite gel is between 0.1 and 5 mg / mm.

14. The gel line composite filter rod comprising a cuprous ion-based MOFs gel material having a specific CO adsorption capacity according to claim 1, characterized in that: The tobacco filament bundle is cellulose acetate or polypropylene filament bundle.

15. An application of the gel line composite filter rod according to any one of claims 1 to 14, characterized in that: Combine it with a non-particulate filter rod.

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