FILTER COMPONENT FOR SMOKING

Abstract

A filter component for tobacco smoking, comprises a filter body (1), a filter core material (2), and a filter closing layer (3). The filter body (1) is a hollow cylinder, and the filter core material (2) is built in the filter body (1). At least one end of the filter body (1) is closed by the filter closing layer (3). The filter core material (2) is a granular filter material, filament filter material, folded filter material, or similar filter material having a shape structure with a large specific surface area. The filter component for smoking can be widely used in the field of tobacco and can be built into cigarettes or arranged in related accessories. The filter component for smoking can effectively filter moisture and tar in smoke, and can also ensure good smoking feel and effect.

Claims

1. A filter component for tobacco smoking, comprising a filter body, a filter core material and a filter closing layer, the filter body is a hollow cylinder, the filter core material is built in the filter body, and at least one end of the filter body is closed by the filter closing layer, and wherein the filter core material is a granular filter material, filament filter material, folded filter material or similar filter material having a shape structure with a large specific surface area.

2. The filter component according to claim 1, wherein the granular filter material has a particle size of 250-3000 μm.

3. The filter component according to claim 1, wherein an addition amount of the granular filter material accounts for ⅕-⅘ of a volume of the filter body.

4. The filter component according to claim 3, wherein the addition amount of the granular filter material accounts for ⅕ of the volume of the filter body.

5. The filter component according to claim 1, wherein the filter core material is of polypropylene resin particles.

6. The filter component according to claim 5, wherein the polypropylene resin particles have a particle size of 750-1500 μm.

7. The filter component according to claim 1, wherein the filament filter material is of a filament with a linear density of 3-6 ktex.

8. The filter component according to claim 7, wherein the filament filter material is of a filament with a linear density of 3.2-4.2 ktex.

9. The filter component according to claim 1, wherein the folded filter material takes an adsorbing material as an matrix, and on which a filter absorbing material is laid or sprayed.

10. The filter component according to claim 9, wherein the filter absorbing material is of a granular material, resin slurry or fiber filament.

11. The filter component according to claim 10, wherein the filter absorbing material comprises ceramic particles, polypropylene resin particles, polypropylene resin slurry, polylactic acid fiber filament or similar material.

12. The filter component according to claim 1, wherein a plurality of cavities are arranged inside the filter body, and the filter core material is arranged in the cavities.

13. The filter component according to claim 12, wherein the plurality of cavities are arranged along an axial direction of the filter body.

14. The filter component according to claim 1, wherein independent cylindrical filter core materials are arranged in the filter body.

15. The filter component according to claim 14, wherein a plurality of cylindrical filter core materials are arranged, and the cylindrical filter core materials are arranged adjacent to and against each other in the filter body, so that gaps between the cylindrical filter core materials and the interior of the cylindrical filter core materials form air flow filtration channels.

16. The filter component according to claim 1, wherein the filter body is molded from starch.

17. The filter component according to claim 1, wherein the filter closing layer has an air permeability higher than 12000 CU.

18. The filter component according to claim 17, wherein the filter closing layer is of pure wood pulp paper with an air permeability higher than 26000 CU.

19. The filter component according to claim 1, wherein a through hole of the filter body has a total cross section area not less than 5 mm.sup.2.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a structural diagram showing a filter component for smoking according to embodiment 1 of the present invention.

[0020] FIG. 2 is a schematic diagram of a cross section of the filter component for smoking according to embodiment 1.

[0021] FIG. 3 is a schematic diagram showing the structure of a filter component for smoking according to embodiment 2 of the present invention.

[0022] FIG. 4 is a schematic diagram of a cross section of the filter component for smoking according to embodiment 2.

[0023] FIG. 5 is a structural diagram showing a filter component for smoking according to embodiment 3 of the present invention.

[0024] FIG. 6 is a schematic diagram of a cross section of the filter component for smoking of embodiment 3.

[0025] FIG. 7 is a structural diagram showing a filter component for smoking according to embodiment 4 of the present invention.

[0026] FIG. 8 is a schematic diagram of a cross section of the filter component for smoking according to embodiment 4.

[0027] FIG. 9 is a schematic diagram of a cross section of the filter component for smoking according to embodiment 5 of the present invention.

[0028] In the drawings:

[0029] 1—filter body, 2—filter core material, 3—filter closing layer.

EMBODIMENTS

[0030] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment 1

[0031] As shown in FIGS. 1 and 2, the filter component for smoking according to embodiment 1 of the present invention comprises a filter body 1, a filter core material 2 arranged in the filter body 1 and a filter closing layer 3, where one end of the filter body 1 is closed by the filter closing layer 3. The filter body 1 is a hollow paper cylinder rolled and pressed by a strip winding machine, and the filter closing layer 3 is fixed on one end face of the filter body 1 through food grade water-based adhesive.

[0032] For embodiment 1, it should be noted that the inventors conducted careful research based on many factors such as air permeability, flexibility and smoking resistance during smoke filtration. A large number of tests have proved that the filter closing layer 3 is preferably of 50 g/m.sup.2 spunlace non-woven cotton, and the filter core material 2 is preferably of polypropylene resin particles with a particle size of 1000 μm which accounts for ⅕ of a volume of the filter body 1. Use of the above parameters enables an ideal combination between the filter body 1, the filter core material 2 and the filter closing layer 3 in embodiment 1 of the present invention, thus achieving the best filterability, air permeability, flexibility and smoking feel of the filter component.

Embodiment 2

[0033] As shown in FIGS. 3 and 4, the filter component for smoking according to embodiment 2 of the present invention comprises a filter body 1, a filter core material 2 arranged in the filter body 1 and a filter closing layer 3, where both ends of the filter body 1 are closed by the filter closing layer 3 through food grade water-based adhesive. The filter body 1 is a hollow paper cylinder rolled by a spiral paper cylinder winding machine. In order to ensure no oil and water seepage, the paper cylinder can be of a three-layer structure or waterproof and oil-proof paper.

[0034] In embodiment 2, in order to have ideal smoking resistance and suitable smoke volume in practical application, the filter closing layer 3 is of high-permeability pure wood pulp paper with an air permeability of 26000 CU.

[0035] Moreover, the inventors also found that ceramic particles not only have the characteristics of water and oil absorption, but also have excellent cooling effect, and can effectively avoid excessive high temperature of the smoke when smoking. Therefore, the filter core material 2 is of ceramic particles. Further experimental research revealed that the particle size of the ceramic particles used in the filter core material 2 is preferably 800 μm. In addition, considering the inventive concept of effectively filtering smoke, in embodiment 2, the inventors adopted a specific structure for the filter core material 2, that is, as shown in FIGS. 3 and 4, the ceramic particles are spread on the surface of spunlace non-woven cotton, the spunlace non-woven cotton is rolled in a loose roll shape, and arranged in the hollow structure of the filter body 1 as the filter core material. Tests show that this filter core material structure makes full use of the fluffy characteristics of spunlace non-woven cotton, and rolled folds thereof can effectively divert and cool the smoke, and make the smoke pass more evenly. In addition, cotton fibers are provided with the ceramic particles, which further increase contact area of the smoke and improve efficiency of water and oil absorption.

Embodiment 3

[0036] As shown in FIGS. 5 and 6, the filter component for smoking according to embodiment 3 of the present invention comprises a filter body 1, a filter core material 2 and a filter closing layer 3, where both ends of the filter body 1 are closed by the filter closing layer 3 through food grade water-based adhesive. The filter body 1 is a hollow paper cylinder rolled by a spiral paper cylinder winding machine.

[0037] In embodiment 3, the filter closing layer 3 is of jute paper with an air permeability of 24000 CU. The filter core material 2 is of filter paper formed by spraying and fixing the polypropylene resin slurry on the surface of the jute paper, and then the filter paper is folded into a loose cylinder which is arranged in the hollow structure of the filter body 1 as the filter core material. The inventors found that the filter paper sprayed with the polypropylene resin slurry by pulping a material with relatively poor plasticity such as polypropylene resin and combining with the paper can not only improve the overall strength of the finished product, but also ensure that the polypropylene resin material is evenly distributed in the filter body, therefore the smoke can be treated more evenly and for a longer time with more ideal air permeability. Moreover, polypropylene resin has stable properties at high temperature, no odor, and will not produce gases harmful to human body or affect the smoking feel.

Embodiment 4

[0038] As shown in FIGS. 7 and 8, the filter component for smoking according to embodiment 4 comprises a filter body 1, a filter core material 2 and a filter closing layer 3, where the filter closing layer 3 is of high-permeability pure wood pulp paper with an air permeability of 12000 CU, and both ends of the filter body 1 are closed by the filter closing layer 3 through food grade water-based adhesive. In the present embodiment, the filter body 1 is of a cylindrical structure made by starch molding, and a plurality of channels are formed therein. The filter core material 2 is of sand core made by high temperature sintering of quartz sand and is filled in the channels of the filter body 1.

[0039] In the present embodiment, the reason why the starch molding is used to manufacture the filter body 1 is to make full use of the advantages of sufficient starch source, being degradable, environment-friendly and hygienic, and convenience of molding channels with various structures in the body. The reason why the filter core material 2 is manufactured by high temperature sintering of quartz sand is to make full use of advantages of excellent filterability and cooling properties of quartz sand, which is convenient to sinter and form various forms. In the present embodiment, combination between the filter body 1 made by starch molding and the filter core material 2 made by high temperature sintering of quartz sand significantly improves the filterability and processability of the filter component for smoking according to embodiment 4, greatly simplifies the processing technology and greatly reduces the production cost.

Embodiment 5

[0040] FIG. 9 is a schematic diagram of a cross section of the filter component for smoking according to embodiment 5 of the present invention. As shown in FIG. 5, the filter component for smoking according to the present embodiment comprises a filter body 1, a filter core material 2 and a filter closing layer (not shown), where the filter body 1 is a hollow paper cylinder made by a spiral paper cylinder winding machine, and ends thereof are closed by the filter closing layer. The filter closing layer can be of 40 g/m.sup.2 spunlace non-woven cotton.

[0041] It is particularly noted here that in embodiment 5, the filter core material 2 is composed of three independent built-in cylindrical filter core materials which are filled with polylactic acid fiber filaments which preferably have a linear density of 3.4 ktex. As shown in FIG. 9, the cylindrical filter core materials 2 are butted adjacent to each other and fixed in the filter body 1 by friction and butting pressure between the cylinder walls. Further, gaps between the cylindrical filter core materials and the interior of the cylindrical filter core materials form air flow filtration channels. Through a large number of experimental researches, the inventors proved that the “built-in filter core material structure” according to embodiment 5, as another ideal filter deformation structure, can not only effectively divert and filter smoke, but also flexibly adjust the internal structure of the filter component according to actual filtration requirements, which improves the processability.

[0042] The above description is only for the best embodiments of the present invention. It should be stressed that various modifications and improvements made to the present invention made by those of ordinary skill in the art without departing from the spirit of the present invention shall fall into the protection scope of the present invention.