CN107927900B

CN107927900B - Method for improving concentration of particle size distribution of cigarette aerosol

Info

Publication number: CN107927900B
Application number: CN201711072134.4A
Authority: CN
Inventors: 司晓喜; 刘志华; 刘强; 朱瑞芝; 向能军; 张凤梅; 赵立恒; 赵常山; 侯春; 韩莹; 李振杰; 苏钟璧
Original assignee: China Tobacco Yunnan Industrial Co Ltd
Current assignee: China Tobacco Yunnan Industrial Co Ltd
Priority date: 2017-11-03
Filing date: 2017-11-03
Publication date: 2020-03-06
Anticipated expiration: 2037-11-03
Also published as: CN107927900A

Abstract

The invention relates to a method for improving the particle size distribution concentration of cigarette aerosol, which belongs to the technical field of cigarettes, and particularly relates to a method for preparing a solution with a certain concentration by using an additive consisting of glycerol and furanone according to a certain proportion and adding the solution to different parts of a cigarette. The invention can reduce the distribution proportion of small-particle-size aerosol and increase the distribution proportion of intermediate-particle-size aerosol particles, thereby realizing more concentrated distribution of smoke aerosol in intermediate particle size, increasing the deposition proportion of large-particle-size smoke aerosol in oral cavity and nasal cavity, ensuring cigarette smoke to be fuller, improving the sensory quality of smoke, reducing small-particle-size smoke aerosol entering respiratory tract and lung and improving the safety of cigarette smoke.

Description

Method for improving concentration of particle size distribution of cigarette aerosol

Technical Field

The invention belongs to the technical field of cigarettes, and particularly relates to a method for improving the particle size distribution concentration of cigarette aerosol.

Background

The cigarette smoke is aerosol consisting of thousands of chemical components and consists of particulate matters with different particle sizes, the aerosol particles have the characteristics of uneven distribution, small variation scale and complexity, and the mass particle size distribution generally conforms to a lognormal distribution function. Because the aerosol particles with different particle sizes are different in deposition conditions in the respiratory system of a human body, relatively speaking, most of the aerosol particles with large particle sizes are remained in the oral cavity and the nasal cavity, and the influence on the sensory quality of smoke is large; the aerosol with small particle size is mainly deposited in the lung and the trachea, and has great influence on health, so that the particle size distribution of the aerosol in the cigarette smoke is changed, and the sensory quality of the smoke and the influence on the human health can be changed. By adjusting the particle size distribution of the aerosol, the particle size distribution of the cigarette aerosol is concentrated, the distribution reduction of the small-particle size aerosol and the distribution increase of the middle-particle size aerosol can be realized, different sensory experiences are brought to cigarette smokers, and the safety of cigarette smoke is improved. At present, no method for improving the distribution concentration of the aerosol in the smoke of the cigarette is reported.

Disclosure of Invention

The invention aims to provide a method for improving the particle size distribution concentration ratio of cigarette aerosol based on the defects of the prior art and the requirements of cigarette smoke regulation technology, and the method can reduce the distribution of small-particle size aerosol, increase the distribution of middle-particle size aerosol particles, and enable the distribution of the smoke aerosol in the middle particle size to be more concentrated, thereby increasing the deposition of the smoke aerosol in oral cavity and nasal cavity, reducing small-particle size smoke aerosol entering respiratory tract and lung, improving the sensory quality of smoke, and improving the safety of cigarette smoke.

The invention aims to realize the method for improving the particle size distribution concentration of the cigarette aerosol according to the following steps:

dissolving an additive by using a solvent to prepare a solution with the mass concentration of 25-50%; the additive comprises glycerol and furanone in a ratio of 50: 1-200: 1; the solvent in the (1) is nontoxic common liquid, ethanol or glycerol triacetate or ethanol-water mixed solution with the volume ratio of 1: 1;

and (2) adding the additive solution prepared in the step (1) to different parts of cigarettes, wherein the theoretical addition amount of the final additive in each cigarette is 0.05-15 mg, and the addition amount of the final additive in different parts is converted according to the weight of tobacco leaves, tobacco shreds, filter tows or cigarette paper used in each cigarette.

In the step (2), the additive solution is added to different parts of tobacco shreds, cigarette paper, filter tow and the like of cigarette cigarettes, or simultaneously added to a plurality of parts.

The additive solution is added in the following ways:

A. spraying the prepared additive solution on tobacco leaves in the tobacco leaf charging process, and then preparing tobacco shreds according to a conventional tobacco shred preparation process;

B. spraying the prepared additive solution on the cut tobacco in the flavoring process of the cut tobacco;

C. spraying the prepared additive solution on filter tow in the process of forming the filter stick, and then preparing the filter stick according to a conventional process;

D. and loading the prepared additive solution on the inner surface of the cigarette paper.

The invention has the advantages and effects that: the method is simple and easy to operate, and after the additives consisting of glycerol and furanone are added into the tobacco shreds, the cigarette paper and the filter tip tows according to a certain proportion, the formation of smoke aerosol is changed, the quality of small-particle-size aerosol is reduced, the quality of large-particle-size aerosol is basically unchanged, the distribution of small-particle-size aerosol is reduced, the distribution of middle-particle-size aerosol particles is increased, the distribution of the smoke aerosol in the middle particle size is more concentrated, the deposition of the smoke aerosol in the oral cavity and the nasal cavity is increased, the smoke of the cigarette is more full, the sensory quality of the smoke is improved, small-particle-size smoke aerosol entering the respiratory tract and the lung is reduced, and the safety of the smoke of the cigarette is improved.

Drawings

FIG. 1 is a comparison graph of the particle size distribution of the smoke aerosol of tobacco leaves after additives are added to the tobacco leaves and a comparison sample.

FIG. 2 is a comparison graph of the particle size distribution of the aerosol of the smoke gas of the cut tobacco added with the additive and the comparison sample.

FIG. 3 is a comparison of smoke aerosol particle size distribution of filter tow after additive addition to a control.

FIG. 4 is a comparison of the smoke aerosol particle size distribution of cigarette paper with additives and a control.

Detailed Description

It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The devices used in the examples are all combinations of conventional apparatuses, and those without specific reference to the technology or conditions in the examples are performed according to the technology or conditions described in the literature in the field or according to the product specification. The invention is further illustrated by the following examples.

Example 1

Preparing an additive solution with the mass concentration of 25% by using ethanol-water as a solvent with the volume ratio of 1:1 and the ratio of glycerol to furanone of 100:1, spraying 92.3 g of the additive solution to tobacco leaves according to each kilogram of tobacco leaves in the tobacco leaf feeding process, then preparing tobacco shreds according to a conventional tobacco shred preparation process, and rolling into cigarettes, wherein the theoretical addition amount of the additive in each cigarette is 15mg (the tobacco leaf usage amount in each cigarette is 0.65 g).

And (3) comparison: spraying ethanol-water with the volume ratio of 1:1 onto tobacco leaves in the tobacco leaf feeding process, then preparing tobacco shreds according to a conventional tobacco shred preparation process, and rolling into cigarettes, wherein the adding amount of the ethanol-water in each cigarette is the same as that in the feeding amount.

Fig. 1 is a comparison graph of the particle size distribution of the cigarette smoke aerosol added with the additive and a comparison sample, and it can be seen that the mass of the small-particle aerosol in the smoke is reduced by 0.46 mg/cig, the mass of the medium-particle aerosol is increased by 0.67 mg/cig, and the mass of the large-particle aerosol is basically unchanged, so that the mass distribution of the small-particle aerosol is reduced by 7.5%, the mass distribution of the medium-particle aerosol is increased by 7.7%, and the mass distribution of the large-particle aerosol is basically unchanged, so that the smoke aerosol distribution is concentrated to the medium particle size compared with the comparison sample. In addition, sensory evaluation shows that compared with a control sample, the smoke is plumper, the smoke shape is longer, the fluffy feeling is increased, and the sensory quality is obviously improved.

Example 2

Preparing an additive solution with the mass concentration of 40% by using pure ethanol for an additive consisting of glycerol and furanone in a ratio of 50:1, spraying 0.2 g of the additive solution to tobacco shreds per kilogram of tobacco shreds in the tobacco shred flavoring process of the prepared additive solution, and rolling into cigarettes, wherein the theoretical addition amount of the additive in each cigarette is 0.05 mg (the tobacco shreds in each cigarette are 0.63 g).

And (3) comparison: spraying ethanol onto tobacco shreds in the process of flavoring the tobacco shreds, and rolling into cigarette, wherein the ethanol content in each cigarette is the same as the ethanol content.

FIG. 2 is a comparison of the particle size distribution of the aerosol in the smoke of a cigarette added with additives with a control sample, and the results show that the mass of the aerosol less than 0.3 μm in the smoke is reduced by 0.15 mg/cig, the mass of the aerosol 0.4 μm is increased by 0.12 mg/cig, and the mass of the aerosol more than 0.7 μm is basically unchanged; from the mass distribution, the mass proportion of the aerosol with the particle size less than 0.3 μm is reduced by 2.2%, the mass proportion of the aerosol with the particle size of 0.4 μm is increased by 1.7%, the mass proportion of the aerosol with the particle size greater than 0.7 μm is basically unchanged, and the smoke aerosol distribution is concentrated to the middle particle size compared with the control. In addition, sensory evaluation shows that the smoke of the added sample is more sufficient compared with the control sample, and the sensory quality is better than that of the control sample.

Example 3

Preparing an additive solution with the mass concentration of 30% by using glycerol and furanone in a ratio of 150:1 as a solvent, spraying 119.0 g of the additive solution to filter tow in the process of forming a filter stick according to each kilogram of the filter tow, then preparing the filter stick according to a conventional process, and finally rolling the filter stick to obtain cigarettes, wherein the theoretical addition amount of the additive in each cigarette is 5mg (the use amount of the filter tow in each cigarette is 0.14 g).

And (3) comparison: spraying the triacetic anhydride grease on filter tow in the process of forming the filter stick, then preparing the filter stick according to the conventional process, and finally rolling the filter stick to obtain the cigarette with the same amount of the triacetic anhydride grease in each cigarette as the amount of the triacetic anhydride grease in the added sample.

FIG. 3 is a comparison of the particle size distribution of the aerosol of cigarette smoke with additives and the control, and it can be seen that the mass of the aerosol less than 0.3 μm in the smoke is reduced by 0.37mg/cig, the mass of the aerosol 0.4 μm is increased by 0.37mg/cig, and the mass of the aerosol more than 0.7 μm is reduced by 0.10 mg/cig; from the mass distribution, the mass proportion of the aerosol with the particle size less than 0.3 μm is reduced by 5.1%, the mass proportion of the aerosol with the particle size of 0.4 μm is increased by 6.4%, the mass proportion of the aerosol with the particle size greater than 0.7 μm is reduced by 1.3%, and the smoke aerosol distribution is obviously concentrated to the middle particle size compared with the contrast. In addition, sensory evaluation shows that the added sample has full and fluffy fragrance and the sensory quality is improved compared with the control sample.

Example 4

Preparing an additive solution with the mass concentration of 50% by using pure ethanol as a solvent, adding 40 g of the additive solution to each kilogram of cigarette paper to load the additive solution on the inner surface of the cigarette paper, and rolling the cigarette paper according to a conventional process, wherein the theoretical addition amount of the additive in each cigarette is 1mg (the cigarette paper amount in each cigarette is 0.05 g).

And (3) comparison: loading ethanol on the inner surface of cigarette paper, and rolling into cigarette by conventional process, wherein the ethanol is added in the same amount as the sample.

FIG. 4 is a comparison of the particle size distribution of the aerosol of cigarette smoke with additives and the control, and it can be seen that the mass of the aerosol less than 0.3 μm in the smoke is reduced by 0.16 mg/cig, the mass of the aerosol 0.4 μm is increased by 0.15 mg/cig, and the mass of the aerosol more than 0.7 μm is reduced by 0.03 mg/cig; from the mass distribution, the mass proportion of the aerosol with the particle size less than 0.3 μm is reduced by 2.2%, the mass proportion of the aerosol with the particle size of 0.4 μm is increased by 2.6%, the mass proportion of the aerosol with the particle size greater than 0.7 μm is reduced by 0.4%, and the smoke aerosol distribution is concentrated to the middle particle size compared with the control. In addition, sensory evaluation shows that the smoke fragrance amount of the added sample is sufficient and the fragrance is full compared with a control sample, and the sensory quality is improved compared with the control sample.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. The present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A method for improving the particle size distribution concentration of cigarette aerosol is characterized by comprising the following steps:

dissolving an additive by using a solvent to prepare a solution with the mass concentration of 25-50%; the additive consists of glycerol and furanone in a ratio of 50: 1-200: 1; the solvent is a non-toxic common liquid, and the non-toxic common liquid is ethanol or glycerol triacetate or an ethanol-water mixed solution with the volume ratio of 1: 1;

step (2) adding the additive solution prepared in the step (1) to different parts of cigarettes, wherein the theoretical addition amount of the final additive in each cigarette is 0.05-15 mg;

the method can reduce the distribution of aerosol with small particle size, increase the distribution of aerosol particles with middle particle size, and make the distribution of the aerosol in the middle particle size more concentrated.

2. The method for increasing the concentration of cigarette aerosol particle size distribution according to claim 1, wherein: the additive solution in the step (2) is added in one of the following ways: