Method for regulating dynamic resistance during smoking of a cigarette and cigarette with balanced resistance

Abstract

The application is a method for regulating and controlling dynamic resistance in the process of cigarette smoking, which is carried out according to the following steps: measuring and counting actual resistance data a corresponding to cigarette length n ; drawing a complete resistance variation curve; drawing a correction curve according to the resistance variation curve; forming holes on the surface of the cigarette in the cigarette length area corresponding to the correction curve to increase the air permeability of the cigarette paper and realize reverse regulation of reducing the resistance of the area. The method reasonably adjusts the punching on the surface of the cigarette according to the detection data, considers the fact that the resistance of the tail end of the cigarette increases due to the compaction and rolling technology of the tobacco and the resistance of the middle section of the cigarette is moderate and does not need to increase the air permeability to make corresponding adjustment, and is more in line with the actual situation when the cigarette is used.

Description

TECHNICAL FIELD

[0001] The present application relates to a method for regulating dynamic resistance balance during cigarette smoking, and to a cigarette with balanced resistance regulated by the method. BACKGROUND

[0002] The sensory quality of cigarettes is not only affected by the weight, resistance, ventilation degree and other factors under static conditions, but also by the changing ventilation degree, pressure drop, suction resistance and other factors during smoking, among which the most important is the change of suction resistance, which is directly related to the consumer's perception of cigarette quality.

[0003] After searching, it was found that Chinese patent CN201710604191.6 discloses a cavity filter which is filled with flow additives, and the suction resistance is balanced by forming a cavity after gas flow during smoking. However, this method is relatively complex and has high production cost.

[0004] Chinese patent CN20172007964.7 discloses a non-uniformly arranged perforated cigarette paper, which increases the air permeability by perforating the cigarette paper, and forms a constant increase in the density of ventilation holes from the self-suction end to the ignition end of the cigarette. However, the holes in this technical solution are distributed on the cigarette as a whole, and the spacing between each row is gradually increasing or decreasing. This solution is still based on the imagination of dynamic resistance, and neither meets the change rule of dynamic resistance of the cigarette based on experimental test data, nor further develops a solution and idea to solve the problem. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a method for regulating the suction resistance balance during cigarette smoking.

[0006] The technical solution of the present application to solve the above technical problem is as follows:

[0007] A method for regulating dynamic resistance balance during cigarette smoking, according to the following steps:

[0008] S1. Measure and count the actual resistance data a corresponding to the length of the cigarette n ;

[0009] S2. Take the average value of the resistance data from 1 / 3 to 2 / 3 of the distance from the head of the cigarette to obtain the average resistance value b. Draw a standard resistance change straight line corresponding to the length with b as the standard value, which is the reference section, wherein the length of the cigarette is the horizontal coordinate and the dynamic resistance of the cigarette is the vertical coordinate.

[0010] S3. Mark the remaining actual resistance data a n in the above horizontal and vertical coordinates, and then sequentially connect each point to the two ends of the reference section of the standard resistance change curve to form a complete resistance change curve.

[0011] S4. Divide each a n c = a n - (b + 100) Pa, and find the difference c n - (b + 100) Pa, and find the difference c n Divide the two ends of the reference section of the standard draw resistance change curve into two groups and compare the sizes, and select the smallest c n The corresponding a n The set points A and B, and the length of the cigarette between A and B is defined as the middle section.

[0012] S5. Define the length of the cigarette between the tail of the cigarette and point A as the burning tail section, and define the length of the cigarette between the head of the cigarette and point B as the burning initial section.

[0013] S6. Take the reference section of the standard draw resistance change as the middle line, and mirror the curves on the left side of point A and the right side of point B to the correction curve.

[0014] S7. Form holes on the surface of the cigarette in the cigarette length area corresponding to the correction curve to increase the air permeability of the cigarette paper and realize reverse regulation of reducing the draw resistance of the area.

[0015] n in the method is a positive integer, and c n ≥ 0.

[0016] The further defined technical solution of the application is:

[0017] Further, step S1 is specifically:

[0018] S1.1 In an environment with a temperature of 22±2℃ and a relative humidity of 60±5%, balance the slim cigarette sample for 48 hours, select several samples, and control the average mass within 5mg;

[0019] S1.2 Determination of dynamic draw resistance of the cigarette sample during the burning process: fix the cigarette sample on a single-hole smoking machine, connect the cigarette with the gas path of the smoking machine and the gas differential pressure measurement unit, measure in a constant temperature and humidity laboratory, use an igniter to light the cigarette and start recording pressure data and time data, the pressure collection frequency is not less than 10HZ, and after the data collection is completed, save the pressure data and time data;

[0020] S1.3 Convert the timing time data during burning into corresponding data with the cigarette burning length data, to obtain corresponding data of pressure data and cigarette burning length.

[0021] Further, step S1.3 is specifically: calculate the unit length of the cigarette burning per unit time according to the cigarette burning length and the burning time, and calculate the actual burning length corresponding to the unit length of the cigarette burning by combining the time data in step S1.2.

[0022] A smoke resistance equalization cigarette, the cigarette surface is provided with ventilation holes at the tail section and the initial section of burning, and the middle section of the cigarette surface is free of holes.

[0023] A smoke resistance equalization cigarette, the cigarette surface is provided with ventilation holes at the tail section, and the middle section and the initial section of the cigarette surface are free of holes.

[0024] A smoke resistance equalization cigarette, the cigarette surface is provided with ventilation holes at the initial section of burning, and the middle section and the tail section of the cigarette surface are free of holes.

[0025] The present application adjusts the punching of the cigarette surface according to the detection data, considers the fact that the smoke resistance of the tail end of the cigarette increases due to the tobacco compaction rolling technology and the smoke resistance of the middle section of the cigarette is moderate and does not need to increase the air permeability, and makes corresponding adjustment, which is more in line with the actual situation of the cigarette in use. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the smoke resistance change curve of example 1;

[0027] Figure 2 is the smoke resistance correction curve of example 1;

[0028] Figure 3 is the cigarette schematic diagram of example 1;

[0029] Figure 4 is the smoke resistance change curve of example 1;

[0030] Figure 5 is the smoke resistance correction curve of example 1;

[0031] Figure 6 is the cigarette schematic diagram of example 1;

[0032] Figure 7 is the smoke resistance change curve of example 1;

[0033] Figure 8 is the smoke resistance correction curve of example 1;

[0034] Figure 9 is the cigarette schematic diagram of example 1. DETAILED DESCRIPTION

[0035] A method for regulating the dynamic smoke resistance of a cigarette during smoking, which is performed according to the following steps:

[0036] S1. In an environment with a temperature of 22±2℃ and a relative humidity of 60±5%, balance the thin cigarette sample for 48 hours, select several cigarettes, and control the average mass within 5mg;

[0037] Determination of dynamic resistance during cigarette sample burning: the cigarette sample is fixed on a single-hole smoking machine, the cigarette is connected with the gas path of the smoking machine and the gas pressure difference measuring unit, the determination is carried out in a constant temperature and humidity laboratory, the cigarette is ignited by an igniter and the pressure data and time data are recorded, the pressure collection frequency is not less than 10HZ, and the pressure data and time data are saved after the data collection is completed;

[0038] According to the burning length of the cigarette and the burning time, the unit length of the cigarette burning per unit time is calculated, and the actual burning length corresponding to the time data in step S1.2 is calculated by combining the unit length of the cigarette burning, and finally the corresponding data of the pressure data and the cigarette burning length are obtained.

[0039] S2. The average value of the resistance data from 1 / 3 to 2 / 3 of the cigarette head is obtained, and the average value b is taken as the standard value, and the standard resistance change line corresponding to the length is drawn, that is, the reference section, wherein the cigarette length is the abscissa and the cigarette dynamic resistance is the ordinate;

[0040] S3. The actual resistance data a n After marking in the above abscissa and ordinate, the points are sequentially connected to the two ends of the reference section of the standard resistance change curve to form a complete resistance change curve;

[0041] S4. The a n and b+100 are subtracted to obtain c n = a n -(b +100)Pa, the difference c n is obtained, and the two groups at both ends of the reference section of the standard resistance change curve are compared, and the smallest c n corresponding to a n is selected as the standard value;

[0042] S5. The cigarette length between the tail of the cigarette and point A is defined as the burning tail section, and the cigarette length between the head of the cigarette and point B is defined as the burning initial section;

[0043] S6. Taking the reference section of the standard resistance change as the middle line, the curves on the left side of point A and the right side of point B are mirrored to the correction curve;

[0044] S7. In the cigarette length area corresponding to the correction curve, holes are formed on the surface of the cigarette to increase the air permeability of the cigarette paper and realize the reverse adjustment of reducing the resistance of the area;

[0045] n in the method is a positive integer, and c n ≥0.

[0046] The implementation case summary table is as follows

[0047]

[0047] Afterburner tail section Intermediate section Afterburner initial section Example 1 : resistance profile Large Reference section Large Corresponding adjusted setting Perforated Non-perforated Perforated Example 2: resistance profile Equal to reference Reference section Large Corresponding adjusted setting Non-perforated Non-perforated Perforated Example 3: resistance profile Large Reference section Equal to reference Corresponding adjusted setting Perforated Non-perforated Non-perforated

[0048] In addition to the above embodiments, the present application can have other implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A method of regulating the dynamic resistance during the smoking of a cigarette, characterized in that: The following steps are taken: S1. Measure, count the actual resistance data a corresponding to the length of the cigarette n ; S2. The average value b of the suction resistance data at a distance of 1 / 3 to 2 / 3 of the cigarette head is obtained, and a standard suction resistance change line corresponding to the length is drawn, taking b as the standard value, wherein the cigarette length is the horizontal coordinate and the cigarette dynamic suction resistance is the vertical coordinate; S3. The remaining actual resistance data a n After marking out in the above longitudinal and transverse coordinates, the points are sequentially connected to both ends of the reference section of the standard resistance variation curve to form a complete resistance variation curve; S4. Distribute each a at both ends of the standard absorption resistance variation curve. n Find the difference c between b and 100 n = a n -(b +100)c n The unit is Pa, and the difference is c. n The standard absorption resistance variation curve is divided into two groups at both ends of the baseline section for comparison, and the smallest c in each group is selected. n The corresponding a n Define points A and B, and define the length of the cigarette between A and B as the middle segment; in the method, n is a positive integer, c n ≥0; S5. The cigarette length between the cigarette tail and point A is defined as the burning tail section, and the cigarette length between the cigarette head and point B is defined as the burning initial section; S6. Taking the standard suction resistance change reference section as the middle line, the curve to the left of point A and the curve to the right of point B are mirrored to form a correction curve; S7. In the cigarette length area corresponding to the correction curve, holes are formed on the surface of the cigarette to increase the air permeability of the cigarette paper and realize reverse adjustment of reducing the suction resistance of the area.

2. The method of claim 1, wherein the method comprises: Step S1 is specifically: S1.1 In an environment with a temperature of 22±2℃ and a relative humidity of 60±5%, the thin cigarette samples are balanced for 48 hours, and several samples are selected with an average mass controlled within 5mg; S1.2 Determination of the dynamic suction resistance of the cigarette sample during the burning process: the cigarette sample is fixed on a single-hole smoking machine, the cigarette is connected with the gas path of the smoking machine and the gas pressure difference measuring unit, the determination is carried out in a constant temperature and humidity laboratory, the cigarette is ignited by an igniter and the pressure data and time data are recorded, the pressure collection frequency is not less than 10Hz, and after the data collection is completed, the pressure data and time data are saved; S1.3 The timing time data during the burning process is converted into corresponding data with the cigarette burning length data, to obtain corresponding data of the pressure data and the cigarette burning length.

3. The method of claim 2, wherein the method further comprises: Step S1.3 is specifically: according to the cigarette burning length and the burning time, the unit length of the cigarette burning per unit time is calculated, and the actual burning length corresponding to the unit length of the cigarette burning is calculated by combining the time data in step S1.

2.

4. A cigarette with balanced resistance to draw, prepared by the method of balancing the dynamic resistance to draw during smoking of the cigarette according to any one of claims 1 to 3, characterized in that: The surface of the cigarette, the ventilation holes are arranged in the burning tail section and the burning initial section, and the middle section of the surface of the cigarette is free of holes.

5. A cigarette having a balanced resistance to draw, prepared by the method of balancing the resistance to draw during smoking of a cigarette according to any one of claims 1 to 3. The surface of the cigarette, the ventilation holes are arranged in the burning tail section, and the middle section and the burning initial section of the surface of the cigarette are free of holes.

6. A cigarette having a balanced resistance to draw, prepared by the method of balancing the resistance to draw during smoking of a cigarette according to any one of claims 1 to 3. The surface of the cigarette, the ventilation holes are arranged in the burning initial section, and the middle section and the burning tail section of the surface of the cigarette are free of holes.

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