CN102524960B - A kind of preparation method of harm reduction cigarette filter - Google Patents

Abstract

The invention discloses a harm-reducing cigarette filter tip containing an adsorption material, which is characterized in that a cylindrical seaweed fiber tow with a diameter of 1-1.5 mm is arranged in the center of the filter rod tow, and molding paper is wrapped around the filter rod tow, Tobacco particles are added to the wrapper. The invention improves the adsorption efficiency of the filter stick to harmful substances such as phenol and nitrosamine; on the premise of not changing the smoking style of cigarettes, it has obvious moistening effect and increases consumers' smoking comfort.

Description

A preparation method of harm-reducing cigarette filter

technical field

The invention belongs to the technical field of cigarette filter rods, and in particular relates to a method for preparing a cigarette filter rod containing an adsorption material.

Background technique

"Corre reduction and harm reduction" is a major issue that the tobacco industry has been concerned about for a long time and has been committed to solving. Selective harm reduction is one of the important research directions of the tobacco industry. Phenol is a major harmful component in the mainstream smoke of cigarettes. It is included in the list of 46 harmful components of the Canadian government and the list of components recommended by the WHO "Tobacco Product Regulation Research Group" ^[5] . It enters the smoke directly when the cigarette is burned. Produces bad odor and is especially carcinogenic to the respiratory system. Among the currently reported cigarette harm reduction technologies, there are few reports on the technology of selectively reducing the release of phenol.

As tar reduction and harm reduction have become the development trend of the tobacco industry at home and abroad, efficient and selective adsorption and filtration materials have become the focus of researchers. Chinese patent CN 101015394A discloses a kind of ordinary activated carbon fiber with expanded pores as the carrier, different amounts of aluminum nitrate or iron nitrate are placed on the carrier through the expanded pores and impregnation method, and then modified activated carbon fibers are prepared through roasting. The composite filter made of fiber has good removal rate of tar, NNK and phenol. WO2007117115 prepared an activated carbon material with a high specific surface area and added it to a cigarette filter rod, which can absorb tar and HCN in the smoke. However, the addition of activated carbon materials to cigarettes will have a certain impact on the smoking quality of cigarettes. Therefore, the research and development of filter rod materials that can reduce harmful substances in cigarette smoke, maintain the original smoking quality of cigarettes, and meet the physiological needs of consumers will become the focus of widespread attention. Seaweed fiber is a new type of renewable fiber, which has many functions such as green environmental protection, self-flammability, anti-electromagnetic radiation, hemostasis and antibacterial, etc., and has great development value. Based on the excellent properties brought about by the special structure of alginate, alginate can be processed into fibers after being dissolved in water or dilute acetic acid, and no toxic or harmful chemical reagents are used in the process. This material is non-toxic, biodegradable, has high biological activity, and is well compatible with the human body. It can be used to make carrier materials with biological activity, and its application in the medical field is also increasing. However, there is no report on the application of sodium alginate in the field of tobacco.

Contents of the invention

The purpose of the present invention is to provide a method for applying seaweed fiber in cigarette filter sticks. The seaweed fiber is applied in the cigarette filter rod, and the harmful substances in the smoke can be effectively reduced under the condition that the tar and nicotine release amount of the cigarette smoke are basically unchanged. At the same time, under the premise of not changing the smoking style of the cigarette, the smoking quality of the cigarette can be improved by adding seaweed fiber into the filter rod.

The above object of the present invention is achieved through the following technical solutions.

A harm-reducing cigarette filter tip containing an adsorbent material, in which a cylindrical seaweed fiber tow with a diameter of 1-1.5 mm is arranged in the center of the filter rod tow, and molding paper is wrapped around the filter rod tow, and tobacco is added in the molding paper particles.

The particle diameter of the tobacco particle powder is 280-300 mesh.

The harm-reducing cigarette filter according to claim 1, characterized in that the added amount of the tobacco particle powder in the cigarette is 3-10% by mass of the formed paper.

Usually, the perimeter of the cross-section of the filter rod tow is 23-25 mm; the total length of the filter rod tow is 120 mm.

The invention also provides a method for preparing the harm-reducing cigarette filter, which includes the following steps: (1) Take the seaweed fiber yarn and use the rotor spinning process to prepare seaweed fiber with a diameter of 1-1.5mm from the seaweed fiber single yarn Tow; (2) Pull the seaweed fiber tow to the filter rod forming machine, and add it to the center of the filter rod tow through the filter forming equipment to become a filter rod tow containing seaweed fiber tow; (3) Tobacco particles Crushed into 280-300 mesh, evenly distributed on the forming paper, the weight of the used tobacco particles accounts for 5-10% of the dry weight of the forming paper; the forming paper is wrapped in the outer layer of the filter rod tow.

The seaweed fiber tow described in step (1) can be obtained by the following method, or can be purchased directly: the yarn is a seaweed fiber yarn with a twist of 40S, and the seaweed fiber single yarn is prepared into 8 - 20 strands of seaweed fiber ply yarn to become seaweed fiber tow .

The seaweed fiber adopted in the present invention is a kind of natural polymer functional fiber which is processed by spinning and processing sodium alginate extracted and processed from kelp as the basic raw material. The molecular chain of alginic acid contains a large number of free carboxyl groups and hydroxyl groups. The algae fiber prepared by using alginate not only absorbs quickly, has a large surface area, but also has a wide range of raw materials, low cost, and is environmentally friendly. The structural formula of alginic acid is shown in formula (I).

Formula (I)

Seaweed fibers can be prepared by wet spinning. Soluble sodium alginate is dissolved in water to form a viscous solution, which is then extruded into a coagulation bath containing divalent metal cations (except Mg ²⁺ ) through spinneret holes to form Solid insoluble alginate fiber tow. In the preparation process of seaweed fiber, _CaCl2 solution is usually used as the coagulation bath.

The present invention applies the seaweed fiber to the cigarette filter rod. Since the seaweed fiber tow is used as the main adsorbent, the groove structure in it allows the smoke to pass through the seaweed fiber tow in the center of the filter rod when the cigarette is smoked, increasing the walking path. , so that the probability of aerosol and other substances being intercepted and adsorbed increases, and the filtration efficiency of the filter rod is improved. Due to the specific chemical structure of seaweed fiber, it has a high adsorption effect on harmful components of phenol and nitrosamine, which can reduce the release of harmful components in cigarette smoke; at the same time, seaweed has its inherent hygroscopicity and can be released at 40-150 degrees Water vapor increases the moist feeling of cigarettes and improves the smoking quality of cigarettes. The invention found that when tobacco particles are added to the molding paper, and seaweed fiber tow is arranged in the center of the filter rod tow, the filtering effect of the filter rod on harmful components such as phenol and nitrosamine can be further strengthened, and the taste is coordinated, And the preparation process is simple and feasible. Under the condition that the release of tar and nicotine in cigarette smoke is basically unchanged, the harmful substances in the smoke can be effectively reduced, and the removal rate of phenol can reach about 30%, and the removal rate of nitrosamine is about 30%. At the same time, under the premise of not changing the smoking style of the cigarette, the smoking quality of the cigarette can be improved by adding seaweed fiber into the filter rod.

The present invention has the following advantages:

1. Cigarette filter rods using seaweed fiber have obvious moisturizing effects without changing the smoking style of cigarettes, which increases the comfort of smoking for consumers;

2. The seaweed fiber tow is placed in the center of the ordinary filter rod along the axial direction to improve the adsorption efficiency of the filter rod to harmful substances such as phenol and nitrosamine;

3. The process of the present invention is simple, the cost is low, no need for equipment modification, and it is supported by mature technology and experience, and can be directly industrialized;

4. The present invention provides smokers with cigarette products with higher safety and quality of smoking.

Description of drawings

Fig. 1 is a cross-sectional view of a cigarette filter rod made by rolling seaweed fiber tow of the present invention; wherein 1-filter rod, 2-seaweed fiber tow, 3-shaping paper, 4-tobacco particles.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the examples listed are not intended to limit the present invention.

The seaweed fiber used in the present invention is purchased by Qingdao Delong Textile Co., Ltd.

The total lengths of the filter rods prepared in the following examples are all consistent, being 120 mm. The circumference is 24.25mm.

Example 1

The seaweed fiber single yarn is prepared by drawing, coarse sand, and fine sand to produce a 40s single yarn. The single yarn adopts the rotor spinning process and is prepared into a seaweed fiber filament with a diameter of 1mm after being combined with 8 strands under the condition of a twist of 400 twists/m. After the acetate fiber is opened, the seaweed fiber bundle is pulled to the forming machine by the traction positioning device, and added to the center of the filter tip through the filter tip forming equipment, and the forming paper is made of ordinary forming paper to obtain a cigarette filter rod.

Example 2

The seaweed fiber single yarn is drawn, coarse sand, and fine sand to prepare a 40s single yarn. The single yarn adopts the rotor spinning process, and the single yarn is prepared into a seaweed fiber with a diameter of 1.5mm after 12 strands under the condition of a twist of 400 twists/m. The tow is then prepared on a filter rod forming machine to obtain a cigarette filter rod; the forming paper is made of high-permeability forming paper to obtain a cigarette filter rod, and the air permeability of the forming paper is 12000CU.

Example 3

The seaweed fiber single yarn is drawn, coarse sand, and fine sand to prepare a 40s single yarn. The single yarn adopts the rotor spinning process, and the single yarn is prepared into a seaweed fiber with a diameter of 1.5mm after 12 strands under the condition of a twist of 400 twists/m. tow;

Pull the seaweed fiber tow to the filter rod forming machine, add it to the center of the filter rod tow through the filter tip forming equipment, and become the filter rod tow containing the seaweed fiber tow;

Tobacco particles are crushed into 300 meshes, and evenly distributed on the forming paper, the weight of the used tobacco particles accounts for 5% of the dry weight of the forming paper; the forming paper is wrapped in the outer layer of the filter rod tow.

Using cigarette shredded tobacco, cigarette paper, tipping paper and filter sticks prepared by the above-mentioned method from Guangdong China Tobacco Industry Co., Ltd. A brand, under the same conditions and the requirements of the filter stick specification parameters, the filter sticks of the above examples were rolled into finished cigarettes.

Cigarettes containing the above-mentioned filter rods were subjected to the following experiments:

Experimental sample: 600 cigarettes as mentioned above; Control sample: 600 ordinary cigarettes without the above-mentioned filter rod, but with the same shredded tobacco, cigarette paper and tipping paper.

Cigarette smoke analysis test: according to GB/T 19609-2004 "Determination of total particulate matter and tar by smoking machine for routine analysis of cigarettes" and GB/T 23356-2009 "Determination of carbon monoxide in gas phase of cigarette smoke non-scattering infrared Determination of total particulate matter (TPM), tar and carbon monoxide (CO) content in smoke, according to YC/T 255-2008 "Determination of Main Phenolic Compounds in Cigarette Mainstream Smoke - High Performance Liquid Chromatography" to determine phenol, according to GB/T 23228-2008 "Determination of Tobacco-specific N-nitrosamines in Total Particulate Matter in Cigarette Mainstream Smoke - Gas Chromatography-Thermal Analysis Method" Determination of N-nitrosamines (NNK) in mainstream smoke. The test results are shown in the table below.

Table 1 Analysis results of cigarette smoke

It can be seen from the above table that the functional centerline filter stick cigarettes have different degrees of reducing effects on phenol and NNK in cigarette smoke, especially in example 3. The functional centerline reduces phenol and NNK significantly.

Cigarette samples were evaluated and smoked according to the cigarette sensory quality evaluation standard in the national standard GB 5606.5-2005. The sensory evaluation results are shown in Table 2.

Table 2 The sensory evaluation and smoking results of cigarettes

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Claims (6)

1. A kind of harm-reducing cigarette filter tip that contains adsorbent material aspect the purposes of reducing harmful substances in smoke, it is characterized in that, the center of filter stick tow is provided with the cylindrical seaweed fiber tow of diameter 1-1.5mm, The tow of the filter rod is wrapped with molding paper, and tobacco particles are added in the molding paper; The preparation method of the cylindrical seaweed fiber tow is to take the seaweed fiber single yarn with a twist of 40S, and use the rotor spinning process to prepare 8-20 strands of seaweed fiber yarn with a diameter of 1-1.5mm from the seaweed fiber single yarn bundle. 2. The use of the harm-reducing cigarette filter tip containing adsorption materials in reducing harmful substances in smoke as claimed in claim 1, characterized in that the particle diameter of the tobacco particle powder is 280-300 mesh. 3. The use of the harm-reducing cigarette filter tip containing adsorbent material as claimed in claim 1 in reducing harmful substance components in smoke, characterized in that the amount of the tobacco particle powder added in the cigarette is the mass of the formed 3-10% of paper. 4. The use of the harm-reducing cigarette filter tip containing adsorbent material as claimed in claim 1 in reducing harmful substance components in smoke, characterized in that the perimeter of the cross-section of the tow tow of the filter rod is 23-25mm . 5. The use of the harm-reducing cigarette filter containing adsorbent material in reducing harmful substances in smoke as claimed in claim 1, characterized in that the total length of the filter rod tow is 120mm. 6. The use of the harm-reducing cigarette filter tip containing adsorbent material as claimed in claim 1 in reducing harmful substance components in smoke, characterized in that the preparation method of the harm-reducing cigarette filter tip containing adsorbent material comprises the following Steps: (1) Take the seaweed fiber single yarn, and use the rotor spinning process to prepare the seaweed fiber tow with a diameter of 1-1.5mm from the seaweed fiber single yarn; (2) Pull the seaweed fiber tow to the filter rod for forming On the machine, the filter tip forming equipment is added to the center of the filter rod tow to form a filter rod tow containing seaweed fiber tow; (3) Tobacco particles are crushed into 280-300 mesh and evenly distributed on the forming paper. The particle weight accounts for 5-10% of the dry weight of the forming paper; wrap the forming paper on the outer layer of the filter rod tow.