Multi-layer variable-pressure composite filter stick capable of improving tar adsorption capacity

Abstract

The utility model belongs to the technical field of cigarette auxiliary materials, and relates to a multi-layer variable-pressure composite filter stick capable of improving tar adsorption capacity, which is composed of three sections of base sticks which are connected end to end and wrapped by forming paper, a near-lip section is a smoke blending section, a near-cut tobacco section is a smoke cooling section, and a middle section is a tar adsorption section, the suction resistance value of the smoke blending section and the smoke cooling section is 25-250 Pa higher than that of the tar adsorption section, the cross section of the tar adsorption section is of an annular multi-layer structure with an outer layer wrapping an inner layer, the density of each layer is increased layer by layer from inside to outside, the suction resistance increase value of the outer layer to the inner layer is 10-35 Pa, and the ratio of the diameter of the inner layer to the diameter of the composite filter stick is 1: (1.5-3). According to the composite filter stick disclosed by the utility model, smoke is gathered in a low-pressure high-adsorption area in the center of the filter stick, the adsorption efficiency of the filter stick is improved by utilizing an efficient adsorption material, and the tar content in the smoke entering an oral cavity is greatly reduced; a smoke blending material is added to the near-lip section, smoke can be effectively blended, and the smoking comfort can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cigarette auxiliary materials, relates to a filter rod, and in particular to a multi-layer variable pressure composite filter rod capable of improving tar adsorption capacity. Background Art

[0002] After a cigarette is lit, the tobacco smolders. Under oxygen-deficient conditions, the organic matter in the tobacco is incompletely burned, and a large amount of smoke substances are produced. All substances except nicotine and water are collectively called tar, which contains a very complex mixture of many hydrocarbons and hydrocarbon oxides, sulfides and nitrides, as well as phenols, fumaric acid, benzopyrene, cadmium, arsenic, β-naphthalene, amines, nitrosamines and radioactive isotopes. This means that most of the harmful substances in smoke are contained in tar. If the tar in the smoke can be filtered or adsorbed, the harm of smoke to smokers can be reduced.

[0003] At present, the commonly used tar reduction filter rod is the cellulose paper groove filter rod. Although the adsorption of tar is better than that of ordinary filter rods, the cellulose paper will also absorb a large amount of moisture in the smoke, causing the smoke to be too dry and the smoking experience to be poor.

[0004] The multi-layer variable pressure composite filter rod disclosed in the utility model can improve the tar adsorption capacity. Through the innovative design of the filter rod structure and the application of functional materials, the tar reduction capacity of the filter rod is improved, and a large amount of moisture in the smoke is not adsorbed, thus maintaining the smoothness of the smoke. In addition, the application of functional materials can also increase the function of the filter rod to adjust the smoke and reduce the smoke temperature. Summary of the invention

[0005] The utility model aims to disclose a multi-layered variable pressure composite filter rod capable of improving the tar adsorption capacity, which not only improves the tar reduction capacity of the filter rod, but also maintains the smoothness of the smoke, and also has the functions of regulating the smoke and reducing the smoke temperature.

[0006] Technical Solution

[0007] A multi-layer variable pressure composite filter rod capable of improving tar adsorption capacity, comprising three sections of base rods wrapped in forming paper and connected end to end, wherein the section near the lip is a smoke blending section, the section near the tobacco shreds is a smoke cooling section, and the middle section is a tar adsorption section, wherein the absorption resistance values ​​of the smoke blending section and the smoke cooling section are 25 to 250 Pa higher than the absorption resistance value of the tar adsorption section, the cross section of the tar adsorption section is an annular multi-layer structure in which an outer layer covers an inner layer, the density of each layer increases layer by layer from the inside to the outside, thereby the absorption resistance also increases layer by layer from the inside to the outside, the absorption resistance increase of the outer layer compared with the inner layer is 10 to 35 Pa, the ratio of the diameter of the inner layer to the diameter of the composite filter rod is 1:1.5 to 3, preferably 1:2, which is a high-efficiency tar adsorption area.

[0008] In a preferred disclosed embodiment of the present invention, the base rods are of equal or unequal lengths, preferably of equal length, and the length thereof is 3 to 20 mm, preferably 12 mm.

[0009] In a preferred disclosed example of the utility model, the outer layer is cellulose acetate tow, polypropylene fiber tow, polylactic acid tow or polylactic acid-PET composite fiber tow, preferably cellulose acetate tow or polylactic acid tow.

[0010] In a preferred disclosed example of the utility model, the inner layer is a carbon-containing polylactic acid tow or a carbon-containing polylactic acid non-woven fabric, wherein the activated carbon has a high-efficiency tar adsorption function.

[0011] In a preferred disclosed example of the utility model, the smoke cooling section is a polylactic acid film, a polylactic acid non-woven fabric, a cooling dust-free paper or a high-permeability paper coated with a low-temperature phase change material, preferably a polylactic acid non-woven fabric or a high-permeability paper coated with a low-temperature phase change material.

[0012] In a preferred disclosed example of the utility model, the flue gas cooling section can also be a polylactic acid tow or a polylactic acid-PET composite fiber tow, preferably a polylactic acid tow.

[0013] In a preferred disclosed example of the utility model, the smoke conditioning section is composed of a composite of cellulose acetate tow and smoke conditioning materials, wherein the smoke conditioning material is essence, scent thread, popping beads or cellulose paper.

[0014] When the smoke moves in the filter rod, it will automatically converge to the area with small resistance, that is, the tar high-efficiency adsorption area of ​​the utility model, and a large amount of tar in the smoke will be adsorbed, thereby reducing the amount of tar inhaled into the mouth of the smoker.

[0015] Beneficial Effects

[0016] The multi-layer variable pressure composite filter rod disclosed by the utility model can improve the tar adsorption capacity, gathers the smoke in the low-pressure and high-adsorption area at the center of the filter rod, uses high-efficiency adsorption materials to improve the adsorption efficiency of the filter rod, and greatly reduces the tar content in the smoke entering the oral cavity; in addition, the addition of smoke blending materials near the lip section can effectively blend the smoke and improve the comfort of smoking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 . Schematic diagram of the structural cross-section of a multi-layered pressure-variable composite filter rod that can improve tar adsorption capacity, wherein the names of the components are: 1-smoke blending section (near lip section), 2-outer layer, 3-inner layer, 4-smoke cooling section (near tobacco section). DETAILED DESCRIPTION

[0018] The present invention is described in detail below in conjunction with 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.

[0019] Example 1

[0020] A multi-layer variable pressure composite filter rod capable of improving tar adsorption capacity, specifically, a composite filter rod of bursting beads-carbon-containing polylactic acid tow-polylactic acid membrane, wherein the lengths of the three filter rods are all 10 mm, the filter rod of the flue gas blending section is a bursting bead cellulose acetate filter rod, the filter rod of the flue gas cooling section is a polylactic acid membrane filter rod, the inner layer 3 of the tar adsorption functional section is a carbon-containing polylactic acid tow filter rod, and the outer layer 2 is a cellulose acetate tow layer, the increased absorption resistance of the outer layer 2 is 10 Pa compared with the inner layer 3, and the ratio of the inner layer 3 to the filter rod diameter is 1:1.5.

[0021] Example 2

[0022] A multi-layer variable pressure composite filter rod capable of improving tar adsorption capacity, specifically, a composite filter rod of bursting beads-carbon-containing polylactic acid tow-polylactic acid membrane, wherein the lengths of the three filter rods are all 10 mm, the filter rod of the flue gas blending section is a bursting bead cellulose acetate filter rod, the filter rod of the flue gas cooling section is a polylactic acid membrane filter rod, the inner layer 3 of the tar adsorption functional section is a carbon-containing polylactic acid tow filter rod, and the outer layer 2 is a cellulose acetate tow layer, the increased absorption resistance of the outer layer 2 is 15 Pa compared with the inner layer 3, and the ratio of the inner layer 3 to the filter rod diameter is 1:2.

[0023] Example 3

[0024] A multi-layer variable pressure composite filter rod capable of improving tar adsorption capacity, specifically, a groove-carbon-containing polylactic acid membrane-polylactic acid tow composite filter rod, wherein the length of the cooling functional section and the smoke blending section is 7 mm, the length of the tar adsorption section is 14 mm, the smoke blending section filter rod is a grooved cellulose acetate filter rod, the smoke cooling section filter rod is a polylactic acid tow filter rod, the inner layer 3 of the tar adsorption functional section is a carbon-containing polylactic acid membrane filter rod, and the outer layer 2 is a cellulose acetate tow layer, the increased absorption resistance of the outer layer 2 compared with the inner layer 3 is 35 Pa, and the ratio of the inner layer 3 to the filter rod diameter is 1:1.5.

[0025] Example 4

[0026] A multi-layer variable pressure composite filter rod capable of improving tar adsorption capacity, specifically, a fragrant thread-carbon-containing polylactic acid tow-polylactic acid membrane composite filter rod, wherein the length of the smoke blending section is 7 mm, the length of the tar adsorption section is 13 mm, and the length of the smoke cooling section is 10 mm. The smoke blending section filter rod is a fragrant thread cellulose acetate filter rod, and the smoke cooling section filter rod is a polylactic acid membrane filter rod. The inner layer 3 of the tar adsorption functional section is a carbon-containing polylactic acid tow filter rod, and the outer layer 2 is a cellulose acetate tow layer. The increased absorption resistance of the outer layer 2 is 35 Pa compared with the inner layer 3, and the ratio of the inner layer 3 to the filter rod diameter is 1:1.5.

[0027] The above four multi-layer variable pressure composite filter rods that can improve the tar adsorption capacity are manufactured according to the principle of consistent indicators. The tar content in the smoke is detected after the cigarettes are rolled. Then, ordinary filter rods of the same specifications are used as control samples and cigarettes are received to detect the tar content in the smoke.

[0028] The test results are as follows:

[0029] Table 1 Tar test results

[0030] sample Tar content in flue gas / mg Decrease / % Control 10.5 -- Example 1 8.3 20.95 Example 2 7.6 27.62 Example 3 7.1 32.38 Example 4 7.1 32.38

[0031] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the specification of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A multi-layered pressure-variable composite filter rod capable of improving tar adsorption capacity, comprising three sections of base rods wrapped in forming paper and connected end to end, wherein the section near the lip is a smoke blending section (1), the section near the tobacco shreds is a smoke cooling section (4), and the middle section is a tar adsorption section, characterized in that: The absorption resistance values ​​of the flue gas conditioning section (1) and the flue gas cooling section (4) are 25 to 250 Pa higher than the absorption resistance value of the tar adsorption section. The cross section of the tar adsorption section is an annular multilayer structure in which the outer layer (2) covers the inner layer (3). The absorption resistance increases layer by layer from the inside to the outside. The absorption resistance increase of the outer layer (2) is 10 to 35 Pa compared with the absorption resistance of the inner layer (3). The ratio of the diameter of the inner layer (3) to the diameter of the composite filter rod is 1:1.5 to 3.

2. The multi-layered pressure-variable composite filter rod capable of improving tar adsorption capacity according to claim 1, characterized in that: The base rods are of equal or unequal lengths, and their length is 3 to 20 mm.

3. The multi-layered pressure-variable composite filter rod capable of improving tar adsorption capacity according to claim 1, characterized in that: The base rods are of equal length.

4. The multi-layered pressure-variable composite filter rod capable of improving tar adsorption capacity according to claim 1, characterized in that: The base rod has a length of 12 mm.

5. The multi-layered pressure-variable composite filter rod capable of improving tar adsorption capacity according to claim 1, characterized in that: The ratio of the diameter of the inner layer (3) to the diameter of the composite filter rod is 1:2.

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