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Preparation method of cigarette filter capable of efficiently filtering harmful substances

A technology for cigarette filters and harmful substances, which is applied in tobacco, e-liquid filter elements, food science, etc. It can solve problems such as gaps, rushes are easy to break, and the process of inserting filter rods is difficult, so as to avoid pore blockage and good adhesion The effect of enhancing sex and water solubility

Active Publication Date: 2019-01-29
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it can reduce the toxicity of cigarettes, the rush is easy to break, the process of inserting the filter rod is difficult, and it cannot be industrialized, and only through the porous structure for physical adsorption, the adsorption amount of harmful substances in the smoke is small, and the adsorption effect is not good.
[0008] At present, the mechanism of action of the rush filter only stays in physical adsorption using its network structure. Although it has a good effect, there is still a gap compared with the chemical adsorption caused by adding additives, which is mainly reflected in the adsorption. selectivity and overall

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] Preparation of e-cigarette filter

[0036] Cutting the modified rushes in step d into granules with a particle size of 1 to 3 mm, putting them into a filter rod forming machine for pressing, and then wrapping them with filter forming paper to obtain a cigarette filter, wherein, The mass of the modified granular rush contained in the cigarette filter tip is 0.08-0.15g.

[0037] The average molecular weight of the polyvinylpyrrolidone is 80000-130000.

Embodiment 1

[0039] According to the above process steps: form a mixed solution with ethanol and water at a mass ratio of 90:10, and stir the mixed solution at a speed of 100 r / min for 1 min at room temperature to obtain a washing solution. Dissolve polyvinylpyrrolidone with an average molecular weight of 80,000 in a 95:5 absolute ethanol / water mixed solution to form a mixed solution with a mass fraction of 3%. The mixture was stirred at a speed of 8 hours for 8 hours, and defoamed for 8 hours in an environment with a vacuum degree of 0.05 MPa to obtain a modified solution. The rush fibers were immersed in the washing liquid, ultrasonically treated at 20 kHz and 10°C for 15 minutes, and then placed in an oven at 40°C for 4 hours to obtain pretreated rush fibers. Put the pretreated rush fiber in the Buchner funnel, under the infiltration of the modified solution, filter it with a negative pressure of 0.3MPa for 3min, then put it in the refrigerator at -40℃ for 6h, take it out and put it in ...

Embodiment 2

[0041] According to the above process steps: form a mixed solution with ethanol and water at a mass ratio of 91:9, and stir the mixed solution at a speed of 50 r / min for 3 minutes at room temperature to obtain a washing solution. Dissolve polyvinylpyrrolidone with an average molecular weight of 90000 in a 94:6 absolute ethanol / water mixed solution to form a mixed solution with a mass fraction of 5%. Stir at a speed of min for 6 hours, and defoam for 9 hours in an environment with a vacuum degree of 0.06 MPa to obtain a modified solution. The rush fiber was immersed in the washing liquid, ultrasonically treated at 30kHz and 15°C for 16min, and then placed in an oven at 45°C for 5h to obtain the pretreated rush fiber. Place the pretreated rush fiber in a Buchner funnel, and infiltrate it with the modified solution, filter it with a negative pressure of 0.35MPa for 3.5min, then put it in a refrigerator at -37°C for 7h, take it out and put it put into a freeze dryer with a vacuum...

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Abstract

The invention relates to a preparation method of a cigarette filter capable of efficiently filtering harmful substances, and belongs to the technical field of cigarettes. According to the preparationmethod, firstly juncus roemerianus fiber is pretreated by adopting a mixed solution of isopropyl alcohol and water, and then the pretreated juncus roemerianus fiber is subjected to suction filtrationunder the infiltration of water / ethyl alcohol mixed solution of polyvinylpyrrolidone and freeze-dried to obtain the modified juncus roemerianus fiber; then, the modified juncus roemerianus fiber is cut into granules, and granules are coated with filter forming paper after being pressed and molded by a filter rod forming machine, so that the desired cigarette filter is obtained. The preparation method of the cigarette filter capable of efficiently filtering the harmful substances has the advantages that the operation is simple, the raw material cost is low, the prepared filter has dense and stable pores, can effectively intercept harmful substances in mainstream smoke, and cooperates with chemical adsorption to have a significant effect of reducing harmful components in the smoke.

Description

technical field [0001] The invention relates to a method for preparing a cigarette filter tip for efficiently filtering harmful substances, and belongs to the technical field of cigarettes. Background technique [0002] The pollution and health hazards caused by smoking have become an urgent problem in the world. Tobacco smoke is a mixture of more than 3800 compounds, which are aerosols composed of volatile, semi-volatile and non-volatile compounds in the gas phase. Smokers smoke because they are addicted to nicotine. However, in addition to nicotine, cigarette smoke also contains various toxic compounds that cause diseases and cancer in smokers. Although many efforts have been made in the development of cigarette filters at home and abroad for many years, most cigarette filters are still made of cellulose acetate. However, common acetate filters are not effective at removing toxic compounds from smoke. In order to improve the removal efficiency, people began to add addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24D3/02A24D3/06
CPCA24D3/0208A24D3/0212A24D3/067
Inventor 张春华付专夏良君周思婕李奕贤徐卫林
Owner WUHAN TEXTILE UNIV