A cigarette design and preparation method based on dynamic resistance per hole and cigarette density
By linking cigarette density with dynamic draw resistance value per puff, the content and coating position of combustion aid in cigarette paper were designed, solving the problem of unstable draw resistance during cigarette smoking, achieving stability of draw resistance per puff and uniformity of smoke release, and improving the quality consistency of cigarette products.
Patent Information
- Application Number
- CN202410208249.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2026-05-15
- Estimated Expiration
- 2044-02-26
AI Technical Summary
Existing technologies struggle to maintain stable dynamic draw resistance during cigarette smoking, resulting in uneven smoke release and sensory quality.
By correlating cigarette density with dynamic draw resistance values per puff, the content and coating position of the combustion aid in cigarette paper are designed to control the uniformity of each puff during the smoking process. Standardized screening and testing methods are used to obtain the correspondence between cigarette length and density, accurately obtain the smoking state of each puff, and design the distribution of the combustion aid in cigarette paper to stabilize the draw resistance.
It achieves stability of the inhalation resistance during cigarette smoking, improves the uniformity of smoke release and the stability of sensory quality, and guides the final production and quality assessment of cigarette products.
Smart Images
Figure CN117898467B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of cigarette auxiliary material design, specifically a cigarette design and preparation method based on dynamic draw resistance and cigarette density. Background Technology
[0002] Cigarette smoke is a complex aerosol, with one-third of its components originating from tobacco itself. The majority of the smoke's components are products of oxidation, pyrolysis, and distillation during cigarette combustion. The formation of these components varies depending on the smoke's temperature range and the oxygen concentration at different locations, ultimately determining the sensory quality of the cigarette. Consumers primarily experience the inhalation of the smoke during combustion, especially the sensation of each puff. During smoking, the raw materials are often designed for the cigarette's static draw resistance. However, cigarette combustion is a dynamic process; the cigarette length continuously shortens, its ventilation characteristics constantly change, and the combustion temperature and dynamic draw resistance all change simultaneously. Therefore, changing boundary conditions, such as the cigarette paper involved in combustion, becomes extremely important. Although it only accounts for about 5% of the weight in traditional circumferential cigarettes, the changes in various variables such as basis weight, air permeability, combustion aid content, filler type, particle size distribution, and thread have a significant impact on the overall combustion performance of cigarettes, as well as the fluctuations in sensory quality between puffs. Tobacco researchers have conducted extensive studies on different specifications of cigarettes and cigarette paper parameters, providing quantitative basis for the optimization and improvement of cigarette material process parameters.
[0003] In recent years, the rapid growth in sales of slim and medium-length cigarettes has made them a hot topic for both tobacco manufacturers and consumers. To reduce draw resistance, slim and medium-length cigarettes commonly employ filter ventilation technology, which alters the sensory quality and the release of chemical components. Chu Wenjuan, in her papers "The Influence of Filter Parameters on the pH and Sensory Quality of Mainstream Smoke from Slim Cigarettes" and "The Influence of Filter Parameters on the Release Amount of Representative Aroma Components in Mainstream Smoke from Slim Cigarettes," investigated the effects of filter parameters on the pH, release amount of representative aroma components, and sensory quality of mainstream smoke from slim cigarettes. The results showed significant differences in sensory quality and the release of chemical components in cigarettes with different circumferences and filter ventilation rates, which may also affect the release of smoke in each puff. Deng Qixin, in her paper "Puff-by-Puff Release of Acidic Components in Mainstream Smoke from Cigarettes with Different Circumferences and Filter Ventilation Rates," analyzed the differences in the puff-by-puff release of acidic components in mainstream smoke from three types of cigarettes with different circumferences and filter ventilation rates. She also examined the differences in the average puff-by-puff release of acidic components per unit tar for the same cigarette circumference but with different filter ventilation rates, as well as the trends and fluctuations in puff-by-puff release. The study found that the stability of aroma components in each puff of cigarettes varied depending on the circumference specification. In his paper "Analysis of Puff-by-Puff Release of Aroma Components in Short Cigarette Smoke," Lu Changtong analyzed the puff-by-puff release and differences of conventional components, caramel and sweet aroma components, smoky aroma components, and organic acid aroma components in the mainstream smoke of short cigarettes and conventional cigarettes. The puff-by-puff release of mainstream smoke from short cigarettes was significantly higher than that from conventional cigarettes, while the release of aroma substances differed. Therefore, the changes in puff-by-puff release and puff-by-puff stability of cigarette smoke can provide a reference for optimizing the parameters of tobacco materials.
[0004] In his paper "The Influence of Potassium Salts in Cigarette Paper on the Combustion Process of Cigarettes," Dai Lu used a cigarette combustion temperature distribution detector to study the gas phase temperature inside the combustion cone of cigarettes with different contents of combustion aids, and tested the dynamic draw resistance during the combustion process. He obtained the influence of potassium ion content in cigarette paper on the combustion state and dynamic draw resistance of cigarettes, finding that the static draw resistance of cigarettes was basically the same, while the average dynamic draw resistance per puff increased with the increase of potassium ion content in the cigarette paper. According to Darcy's law, cigarette draw resistance is related to the viscosity of the smoke. Increased smoke temperature (the dynamic draw resistance of cigarettes is consistent with the volume change trend of the combustion cone above 600℃) leads to increased smoke viscosity, thereby increasing the draw resistance of cigarettes.
[0005] During the smoking process, as the cigarette length continuously shortens, the cigarette's ventilation characteristics constantly change, and simultaneously, the cigarette's combustion temperature and dynamic draw resistance also change. Secondly, the cigarette's structure during rolling cannot be altered; its original structural state, such as its density, is constant. However, the overall combustion state of the cigarette can be adjusted by changing the auxiliary materials, thus altering the fluctuations in dynamic draw resistance per puff and ultimately ensuring the stability of each puff. Therefore, given the difficulty in obtaining and accurately acquiring combustion process data, patent CN113049036B employs a self-developed device and testing method to test cigarettes, accurately obtaining the dynamic draw resistance value of each puff throughout the entire smoking process and correlating it with the density of each point on the cigarette paper, providing a new approach to cigarette parameter design. Summary of the Invention
[0006] To overcome the shortcomings of the prior art, this invention proposes a cigarette design and preparation method based on dynamic draw resistance and cigarette density. The method correlates the dynamic draw resistance of any cigarette size with the cigarette density during each puff, thereby allowing for targeted design of the cigarette paper combustion aid to control the uniformity of each puff during the smoking process.
[0007] The technical solution adopted in this invention is as follows.
[0008] On one hand, the present invention provides a cigarette design and manufacturing method based on dynamic draw resistance and cigarette density, comprising:
[0009] Standardized screening of cigarettes;
[0010] The selected cigarettes were tested multiple times using standard testing methods to obtain the relationship between cigarette length and cigarette density.
[0011] The dynamic draw resistance value of the selected cigarettes during the entire smoking process was obtained using a standard smoking method.
[0012] By linking cigarette density with dynamic draw resistance value per puff, and designing the corresponding distance of cigarette paper, the content of combustion aid in different areas, and the coating position, a cigarette product with stable draw resistance is finally obtained.
[0013] By standardizing the screening of cigarettes, the cigarettes do not fluctuate significantly in later tests and remain within a stable range. Standard testing methods are used to obtain the correspondence between cigarette length and density, and standard puffing methods are used to obtain the draw resistance value of each cigarette to be tested. By analyzing the relationship between cigarette density and corresponding draw resistance value, and the relationship between combustion aid content and draw resistance, the content of combustion aid in cigarette paper is designed to obtain cigarettes with stable draw resistance and improve the stability of dynamic puff-by-puff vaping.
[0014] Optionally, standardized screening refers to equilibrating the cigarettes for 48 hours in an environment with a temperature of (22±1)℃ and a relative humidity of (60±3)%, screening out cigarettes with good balance, measuring the average weight and draw resistance of the cigarettes, using the average weight of the cigarettes as the standard with a fluctuation of 10mg above and below, and the draw resistance of the cigarettes as the standard with a fluctuation of 5Pa above and below.
[0015] Optionally, the cigarette can be any length of any circle.
[0016] Optionally, the standard test method is the YC / T 476-2013 standard test method.
[0017] Optionally, the specific method for obtaining the dynamic draw resistance value of each cigarette during the entire smoking process is to use a draw detection device and the ISO3308 standard draw method to conduct multiple tests on the test cigarettes to accurately obtain the draw status of each cigarette during the entire smoking process.
[0018] Optionally, the correlation between cigarette density and dynamic draw resistance per puff refers to the derivation of the distribution location and coating method of the cigarette paper's combustion aid based on the correspondence between cigarette density and length, and the positive correlation between dynamic draw resistance and combustion aid content.
[0019] Optionally, the design of the distance corresponding to the cigarette paper, the content of the combustion aid in different areas, and the coating position refers to determining the length and width of the cigarette paper base paper for cigarette specifications with different circumferences and cigarette lengths, dividing the length of the cigarette paper into position areas according to the correlation between cigarette density and dynamic draw resistance per puff, designing the distribution position and coating method of the cigarette paper based on the derivation, and coating the combustion aid. After the combustion aid dries, the cigarette paper is obtained.
[0020] Optionally, the cigarette paper base is uncoated cigarette paper.
[0021] Optionally, the combustion improver is one or more of potassium citrate, potassium phosphate, potassium bitmalate, potassium tartrate, and potassium acetate.
[0022] Optionally, the content of the combustion improver is 0.1-2% of the weight of the cigarette paper.
[0023] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: This invention can be applied to the design and manufacturing of cigarettes based on dynamic draw resistance and cigarette density. In the overall cigarette design process, when the leaf blend and flavoring formulas are stable, cigarette auxiliary materials are introduced for final product shaping. By correlating the tobacco density distribution of the cigarette with the dynamic draw resistance value obtained during the cigarette combustion process, the combustion aids in the cigarette paper can be designed specifically to control the uniformity of each puff during the smoking process. Through comparative analysis and calculation, the cigarette paper involved in combustion can be designed and controlled. This has guiding significance for the pre-production development of cigarette products, including the design of cigarette auxiliary materials, the structural design of cigarette products, and the judgment of cigarette quality. Attached Figure Description
[0024] Figure 1 A flowchart illustrating a cigarette design and manufacturing method based on dynamic draw resistance and cigarette density provided in an embodiment of the present invention;
[0025] Figure 2 This is a diagram showing the relationship between cigarette density and length provided in an embodiment of the present invention.
[0026] Figure 3 This is a schematic diagram of a cigarette provided in an embodiment of the present invention;
[0027] Figure 4 This is a schematic diagram showing the number of cigarette puffs and their corresponding draw resistance values provided in an embodiment of the present invention.
[0028] Figure 5 This is a schematic diagram of a two-stage coating method 1 provided in an embodiment of the present invention;
[0029] Figure 6 This is a schematic diagram of the two-stage coating method 2 provided in an embodiment of the present invention;
[0030] Figure 7 This is a schematic diagram of the three-stage coating method 1 provided in an embodiment of the present invention;
[0031] Figure 8 This is a schematic diagram of the three-stage coating method 2 provided in an embodiment of the present invention;
[0032] Figure 9 This is a schematic diagram showing the content of different combustion aids and the length of cigarettes under coating method A provided in this embodiment of the invention;
[0033] Figure 10 This is a schematic diagram showing the content of different combustion accelerants and the length of cigarettes under coating method B provided in this embodiment of the invention. Detailed Implementation
[0034] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and should not be construed as limiting the scope of protection of this application.
[0035] Example 1
[0036] This embodiment introduces a cigarette design and manufacturing method based on dynamic draw resistance and cigarette density, including:
[0037] Standardized screening of cigarettes;
[0038] The selected cigarettes were tested multiple times using standard testing methods to obtain the correspondence between cigarette length and cigarette density.
[0039] The dynamic draw resistance value of the selected cigarettes during the entire smoking process was obtained using a standard smoking method.
[0040] By associating the cigarette density with the dynamic draw resistance value per puff, and designing the corresponding distance of the cigarette paper, the content of combustion aid in different areas, and the coating position, a cigarette product with stable draw resistance is finally obtained.
[0041] This embodiment standardizes the screening of cigarettes to ensure that the cigarettes remain stable within a consistent range during later testing, without significant fluctuations. Standard testing methods are used to establish the relationship between cigarette length and density, and standard puffing methods are employed to obtain the draw resistance value for each tested cigarette. By correlating the tobacco density distribution with the dynamic draw resistance values obtained during each puff of combustion, the combustion aids in the cigarette paper can be designed to regulate the uniformity of each puff. Through comparative analysis and calculation, the cigarette paper used in combustion can be designed and controlled to obtain cigarettes with stable draw resistance, thereby improving the stability of dynamic puff-by-puff vaping. This approach provides guidance for the pre-production development of cigarette products, including the design of auxiliary materials, the structural design of cigarette products, and the assessment of cigarette quality.
[0042] Example 2
[0043] Based on Example 1, this example further introduces and explains the cigarette design and preparation method based on dynamic draw resistance and cigarette density.
[0044] In evaluating the overall cigarette design, once the leaf blend and flavoring formulas are stable, cigarette additives are introduced for final product design. First, standardized screening of test cigarettes is conducted. Next, the tobacco density distribution of the cigarette is measured. Then, the dynamic draw resistance values obtained during the cigarette's combustion process are correlated using a self-developed device. This allows for targeted design of the cigarette paper combustion aid to regulate the uniformity of each puff during the smoking process. The specific steps of this method include:
[0045] First, the test cigarettes were standardized and screened. The test cigarettes were selected with reference to and higher than the industry standard samples for consistency. They were equilibrated for 48 hours in an environment with a temperature of (22±1)℃ and a relative humidity of (60±3)%. Fifty cigarettes with good equilibration were selected, and the average values of cigarette weight and draw resistance were measured. Then, using this as the center point, the cigarette weight range was defined by a fluctuation of 10mg above and below the average value of cigarette weight, and the draw resistance range was defined by a fluctuation of 5Pa above and below the average value of cigarette draw resistance.
[0046] Next, using the YC / T 476-2013 standard test method, multiple tests were conducted on cigarettes of arbitrary circumference and length to obtain the corresponding relationship between cigarette length and cigarette density. The corresponding relationship is as follows: Figure 2 As shown.
[0047] Secondly, the suction detection device in patent CN113049036B and the ISO3308 standard suction method were used to conduct multiple tests on cigarettes of any circumference and length to accurately obtain the dynamic draw resistance value of each cigarette for each puff during the entire smoking process. An example image of the cigarette is shown below. Figure 3 As shown in Table 1, the number of puff holes and their corresponding draw resistance values are as follows: Figure 4 As shown.
[0048] Table 1 Dynamic draw resistance values per puff during cigarette combustion
[0049] Combustion accelerator content (%) Number of puffs Suction resistance (Kpa) 0.41 1 1.63 0.41 2 1.588 0.41 3 1.64 0.41 4 1.674 0.41 5 1.861 0.41 6 2.018 0.41 7 2.171
[0050] Finally, the density distribution corresponding to the length of the cigarette is correlated with the dynamic draw resistance value per puff, and then the distribution is designed with the distance corresponding to the cigarette paper. Since the fiber filler of the cigarette paper is fixed, the design can be carried out by changing the content of combustion aid and the coating position in different areas.
[0051] Based on the relationship between cigarette density and length ( Figure 1 The dynamic draw resistance is positively correlated with the combustion aid content (the correlation R² = 0.9693 in the literature "The Influence of Potassium Salts in Cigarette Paper on the Combustion Process of Cigarettes"), leading to the deduction that the cigarette paper distribution is a two-segment design, such as... Figure 5 and Figure 6As shown, the first half (0-30mm) is coated uniformly (at this time, the influence of cigarette length and tobacco density on the dynamic draw resistance value of the first few puffs is relatively small), and the second half (30-50mm) is coated in a stepped manner (because the cigarette length gradually shortens, which has a great impact on the draw resistance, and the draw resistance in the second half increases linearly, as shown in Table 1); that is, from the beginning of the tobacco burning end to the middle position (0-30mm), the content of the combustion aid is uniformly coated (0.1-2% as potassium ions), from the middle position to the stage of contact with the filter (30mm-50mm), the content of the combustion aid is coated in a stepped manner (0.1-2% as potassium ions), and at the stage of contact with the filter (50mm-59mm), the content of the combustion aid is uniformly coated (0.1-2% as potassium ions).
[0052] Alternatively, it can be deduced that the cigarette paper distribution is a three-segment design, such as... Figure 7 and Figure 8 As shown, the first section (0-10mm) is a stepped upward coating method, the middle section (10-35mm) is a uniform coating method, and the third section (35-59mm) is a stepped downward and then upward coating method (0.1-2% as potassium ions).
[0053] The required length and width of the cigarette paper base are determined for cigarette specifications with different circumferences and cigarette lengths. The cigarette paper base is uncoated cigarette paper. According to the coating method, the length of the cigarette paper is divided into two- or three-section coating areas based on the correlation between cigarette density and dynamic draw resistance during each puff. A certain amount of draw resistance is coated in the coating area as required. The draw resistance is one or more of potassium citrate, potassium phosphate, potassium bitum malate, potassium tartrate, and potassium acetate. The content of the draw resistance is 0.1-2% of the weight of the cigarette paper (calculated as potassium ions, and the anion content is calculated based on the anion ions of different types of draw resistance). After drying, the cigarette paper is obtained. Then, it is rolled into a cigarette to obtain a cigarette product with stable draw resistance during each puff.
[0054] Example 3
[0055] This embodiment designs a combustion enhancer for cigarette paper to regulate the uniformity of each puff during the smoking process, supporting and addressing the need for refined and homogenized precision design and development of existing cigarette products. This embodiment designs two coating methods (B) and compares them with a control group (coating method A).
[0056] Coating method A is a uniform coating method for the entire cigarette paper, such as... Figure 9 As shown, the three samples are as follows:
[0057] Combustion aid No. 1 is potassium hydrogen malate, with a content of 0.4% (calculated as potassium ions);
[0058] Combustion aid No. 2 is potassium tartrate, with a content of 0.8%;
[0059] Combustion aid No. 3 is potassium phosphate, with a content of 1.7%.
[0060] Coating method B is a two-stage coating process for cigarette paper, such as... Figure 10 As shown, the first half (0-30mm) is a uniform coating, while the second half (30-59mm) is a stepped coating. The three samples are as follows:
[0061] Combustion aid No. 1 is potassium hydrogen malate, with a content of 0.4% (calculated as potassium ions). Specifically, the first half (0-30mm) is uniformly coated with 0.4%, and the second half (30-59mm) is coated with a stepwise decrease of 0.4%-0.1%.
[0062] Combustion aid No. 2 is potassium tartrate with a content of 0.8%. Specifically, the first half (0-30mm) is coated with 0.8% evenly, and the second half (30-59mm) is coated with a stepwise decrease of 0.8%-0.2%.
[0063] Combustion aid No. 3 is potassium phosphate with a content of 1.7%. Specifically, the first half (0-30mm) is coated with 1.7% evenly, and the second half (30-59mm) is coated with a stepwise decrease of 1.7%-0.4%.
[0064] Step 1: Obtaining sample cigarette density and dynamic draw resistance per puff
[0065] A control cigarette, A, was selected. Its specific parameters were a medium-sized cigarette with an overall length of 89mm (30mm filter, 59mm tobacco). The cigarette paper contained potassium hydrogen maate as the combustion aid, with a content of 0.40% (calculated as potassium ions). The coating method was uniform coating of the entire cigarette paper. The balanced cigarette was tested according to the YC / T476-2013 standard test method and the ISO3308 standard smoking method to accurately obtain the cigarette density distribution (20 tests, average value) and the dynamic draw resistance value for each puff during the entire smoking process (10 tests, average value).
[0066] Step 2 Data Preprocessing
[0067] The combustion accelerant was coated according to coating method A, and the absorption resistance results are shown in the table below.
[0068] Table 2. Dynamic draw resistance per puff for cigarettes with coating method A.
[0069]
[0070] Step 3: Cigarette Paper Design
[0071] Following the coating method in section B, cigarette paper with a two-stage combustion aid distribution was prepared, and then rolled into cigarettes to obtain a cigarette product with stable draw resistance during each puff.
[0072] 1. Determine the required length and width of the cigarette paper base for cigarette specifications with different circumferences and cigarette lengths;
[0073] 2. Divide the length of the cigarette paper into two coating sections based on the correlation between cigarette density and dynamic draw resistance per puff.
[0074] 3. Apply a certain amount of combustion accelerant to the coating area as required;
[0075] 4. After drying, cigarette paper is obtained.
[0076] Step 4, based on coating method B, ultimately yields a cigarette with good stability during each puff.
[0077] Table 3. Dynamic draw resistance per puff for cigarettes with coating method B.
[0078]
[0079] As shown in Tables 2 and 3, potassium hydrogen maate has a lower absorption resistance value than potassium tartrate and potassium phosphate as a combustion improver. Furthermore, with the combustion improver remaining unchanged, coating method B has a stronger absorption resistance stability than coating method A. Coating method B has the lowest absorption resistance value and the best stability.
[0080] Further experiments were conducted, comparing the method with the linear ascending coating technique described in the comparative patent. The linear ascending coating technique involves coating in a linearly increasing manner from the cigarette paper to the filter tip contact section. Three samples were tested:
[0081] The No. 1 combustion aid is potassium hydrogen malate, with a content of 0.4% (calculated as potassium ions), specifically in a linearly increasing coating (0.4%-2.8%).
[0082] Combustion aid No. 2 is potassium tartrate, with a content of 0.8%, specifically in a linearly increasing coating range (0.8%-3.2%).
[0083] Combustion aid No. 3 is potassium phosphate, with a content of 1.7%, specifically showing a linear increase in coating content (1.73%-4.13%).
[0084] Table 4. Comparison of dynamic draw resistance per puff of cigarettes using linear ascending coating methods.
[0085]
[0086] Comparative Example 2:
[0087] The coating method is a three-stage coating for cigarette paper. The first stage (0-10mm) is a stepped upward coating, the middle stage (10-35mm) is a uniform coating, and the third stage (35-59mm) is a stepped downward coating. The three samples are as follows:
[0088] Combustion aid No. 1 is potassium hydrogen malate, with a content of 1.6% (calculated as potassium ions). The specific coating method is as follows: the first section (0-20mm) is a linear decrease (1.6%-0.8%) coating method; the middle section (20-35mm) is a uniform coating of 0.8%; the third section (35-54mm) is a linear increase (0.8%-2.0%); and the fourth section (54-59mm) is not coated.
[0089] Combustion aid No. 2 is potassium tartrate with a content of 2.0%. The specific coating method is as follows: the first section (0-20mm) is a linear decrease (2.0%-1.2%) coating method; the middle section (20-35mm) is a uniform coating of 1.2%; the third section (35-54mm) is a linear increase (1.2%-2.4%); and the fourth section (54-59mm) is not coated.
[0090] Combustion aid No. 3 is potassium phosphate with a content of 1.7%. The specific coating method is as follows: the first section (0-20mm) is coated with a linear decrease (2.93%-2.13%), the middle section (20-35mm) is coated with a uniform 2.13%, the third section (35-54mm) is coated with a linear increase (2.13%-3.33%), and the fourth section (54-59mm) is not coated.
[0091] Table 5. Comparison of dynamic draw resistance per puff for cigarettes using segmented coating methods.
[0092]
[0093] As can be seen from Tables 4 and 5 of the experimental results in Comparative Examples 1 and 2, the two-stage combustion aid coating method designed in this invention has the lowest absorption resistance and the best stability compared to the schemes in the comparative examples.
[0094] The foregoing description enables those skilled in the art to implement or use the present invention. Those skilled in the art can readily make various modifications to these embodiments, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A cigarette design and manufacturing method based on dynamic draw resistance and cigarette density, characterized in that, include: Standardized screening of cigarettes; The selected cigarettes were tested multiple times using standard testing methods to obtain the correspondence between cigarette length and cigarette density. The dynamic draw resistance value of the selected cigarettes during the entire smoking process was obtained using a standard smoking method. By associating the cigarette density with the dynamic draw resistance value per puff, and designing the corresponding distance of the cigarette paper, the content of combustion aid in different areas, and the coating position, a cigarette product with stable draw resistance is finally obtained. Among them, the cigarette paper combustion aid adopts a two-stage coating method, with the first half (0-30mm) being uniformly coated and the second half (30-59mm) being a stepped coating method. When the combustion aid is potassium hydrogen malate, the first half (0-30mm) is uniformly coated with a potassium ion content of 0.4% in the cigarette paper, and the second half (30-59mm) is coated in a stepped manner with a potassium ion content of 0.4%-0.1% in the cigarette paper. When the combustion aid is potassium tartrate, the first half (0-30mm) is uniformly coated with a potassium ion content of 0.8% in the cigarette paper, while the second half (30-59mm) is coated in a stepped manner with a potassium ion content of 0.8%-0.2% in the cigarette paper. When the combustion aid is potassium phosphate, the first half (0-30mm) is uniformly coated with a potassium ion content of 1.7% in the cigarette paper, while the second half (30-59mm) is coated in a stepped manner with a potassium ion content of 1.7%-0.4% in the cigarette paper.
2. The cigarette design and manufacturing method based on dynamic draw resistance and cigarette density according to claim 1, characterized in that, The standardized screening refers to equilibrating the cigarettes for 48 hours in an environment with a temperature of (22±1)℃ and a relative humidity of (60±3)%, screening out cigarettes with good balance, measuring the average weight and draw resistance of the cigarettes, using the average weight of the cigarettes as the standard with a fluctuation of 10 mg or more, and using the draw resistance of the cigarettes as the standard with a fluctuation of 5 Pa or more.
3. The cigarette design and manufacturing method based on dynamic draw resistance and cigarette density according to claim 1, characterized in that, The standard test method is the YC / T 476-2013 standard test method.
4. The cigarette design and manufacturing method based on dynamic draw resistance and cigarette density according to claim 1, characterized in that, The specific method for obtaining the dynamic draw resistance value of the selected cigarettes during the entire smoking process is to use a draw detection device and the ISO3308 standard draw method to conduct multiple tests on the test cigarettes to accurately obtain the draw state of each cigarette during the entire smoking process.