CN102830135A - Detection method of cigarette stability - Google Patents
Detection method of cigarette stability Download PDFInfo
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- CN102830135A CN102830135A CN 201210296108 CN201210296108A CN102830135A CN 102830135 A CN102830135 A CN 102830135A CN 201210296108 CN201210296108 CN 201210296108 CN 201210296108 A CN201210296108 A CN 201210296108A CN 102830135 A CN102830135 A CN 102830135A
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Abstract
The invention relates to a detection method of cigarette stability. Cigarettes to be detected are divided into groups with five cigarettes per group; eight values during combustion are tested, which are a temperature at the beginning of the third smoking, a maximum temperature during the third smoking, a temperature at the end of the third smoking, a maximum temperature during the fourth smoking, a maximum temperature during the fifth smoking, a maximum temperature during the sixth smoking, a maximum temperature during the seventh smoking, and the smoking number of the whole cigarette; an mean value of each index of each group is used as a basic value, and the values are defined as eight indexes of the cigarette combustion state; 5-6 groups of data are determined parallelly; and relative standard deviations RSD of the basic values of the eight indexes of the 5-6 groups of cigarettes to be detected are calculated; by using a cigarette 3R4F with a medium tar specification of Kentucky standard cigarettes as a reference object, the RSDs of the cigarettes to be detected are compared with the RSD values of eight indexes of the Kentucky 3R4F cigarette. The invention establishes eight indexes of the cigarette combustion process as standards for cigarette combustion stability, and provides feasible reference for cigarette production and research.
Description
Technical field
The present invention relates to technical field of cigarettes, the detection method of specifically a kind of cigarette homogeneity, stability.
Background technology
Cigarette mainly is made up of tobacco, adjuvant, cigarette paper, filter tip etc., and wherein combustion process relates generally to tobacco, adjuvant and cigarette paper.In the combustion process of cigarette, there is the combustion system of two kinds of different in kinds: inhale glowing naturally between combustion and twice suction.
After cigarette propped up and lighted, head end generated charcoal immediately, thereby had formed the combustion system of cigarette.The solid matter of combustion parts forms the burning awl, and the carbon point curve of a black is arranged between burning awl and the unburned cigarette paper.The peripheral tobacco of cone base is burnt during suction, moves behind the carbon point curve, and cone is elongated, and air is inhaled into cigarette through the combustion zone, and consequent flue gas is a main flume.When suspending suction, cone is glowed and is shortened, and till reaching thermal equilibrium with air, keep cigarette burning around the natural convection that makes progress of the air of combustion zone this moment, and form side-stream smoke.
In the latter stage fifties 19th century, tobacco scientific circles have just begun the mensuration to the maximum temperature of cigarette when glowing and aspirate of burning.But owing to the loose structure of inner cigarette, the irregular and fast gas flow rate of Temperature Distribution makes the work of this respect that certain degree of difficulty arranged.
The peripheral temperature that develops into when measuring cigarette burning of infrared scan technology provides a new method.The maximum temperature on surface when people such as Laszlo have measured cigarette smoking with infrared scanner first, the distribution and the time relation of burning cigarette surface temperature that Liu has further expanded this work sutdy.When being particularly suitable for writing down cigarette smoking, this infrared measurement of temperature method changes fast and inhomogenous Temperature Distribution.
The composition of main flume is quite complicated, comprises many dissimilar chemical substances, and wherein most content are extremely low.Dub and Green estimate nearly 3875 kinds of organic chemistry compositions, and tobacco itself contains about 2250 kinds of materials, and distinctive material has 2470 kinds in the flue gas, promptly the cigarette tobacco ingredient when burning through pyrolysis and the formed material of high temperature synthetic reaction.
Hydro carbons in the gas phase is generated by tobacco leaf component thermal decompositions between temperature is by 300-550 ℃ such as paraffin, triacetyl glycerine, fatty acid, amino acid, aldehyde and ester classes.When a lot of experimental results showed result of combustion of tobacco, temperature generated a series of NPH and alkene when being about 400-600 ℃, and temperature generates naphthalene for about 700 ℃, generates palycyclic aromatic when temperature is higher than 800 ℃.Therefore, the height of the generation of the various chemical substances in the flue gas and cigarette burning temperature has inseparable relation.
Because the cigarette manufacturing process is a process that has enchancement factor, can't obtain two identical cigarette, therefore be necessary the homogeneity and the stability of cigarette product are detected, guarantee the steady quality of product with this.Method at present commonly used is that physical indexs such as weight that cigarette is propped up, resistance to suction, ventilation, hardness, length detect; Pass judgment on the comprehensive consistance that cigarette props up; But these indicator consiliences can not guarantee the consistance of the burning performance that cigarette props up, the consistance of the flue gas that also just can't guarantee to produce.In addition, in the research of a lot of technical field of cigarettes of carrying out, all need in cigarette, add the material of other kind, whether the adding of these materials can cause the change of essence to cigarette burning, is still a problem that remains to be discussed.Also indeterminate in the cigarette industry at present to the cigarette Detection of Stability, can only rely on cigarette weight, physical parameters such as resistance to suction confirm that the stability in the cigarette burning process is not had relevant criterion.
Summary of the invention
The detection method that the purpose of this invention is to provide a kind of cigarette homogeneity and stability.
Technical scheme of the present invention is: formulate a kind of detection method of testing cigarette stability through the fired state of test cigarette.Be about to two or more sets cigarette and test its fired state respectively; With stable standard cigarettes fired state deviation as standard; Exceed the scope of permission if find the deviation of the fired state of these several groups of cigarette; Think that promptly the fired state of these several groups of cigarette has taken place than about-face, can not contrast as the cigarette of same nature.The scope of application is with the mutual contrast in the brand cigarette.That is: through the fired state of testing standard cigarette, calculate eight RPs relative standard deviation separately respectively, be defined as eight indexs with two or more sets cigarette that need test; If all in the double-wide of eight indexs of standard cigarettes, then be regarded as these two groups of cigarette is homogeneous, stable to eight indexs of these two or more sets cigarette; If the double-wide of eight indexs of overgauge cigarette then is regarded as two or more sets cigarette and exists than big-difference, obvious change has taken place in fired state.
Because the stabilized reference cigarette that Kentucky standard cigarette is present tobacco business generally acknowledges, therefore select in the standard cigarette of Kentucky comparatively the cigarette 3R4F of conventional medium tar specification object as a reference.Cigarette to be detected is one group with five cigarette, tests its aflame eight numerical value, the temperature when being respectively the 3rd mouthful of suction beginning; Maximum temperature in the 3rd mouthful of suction, the temperature when the 3rd mouthful of suction finishes, the maximum temperature in the four-hole suction; Maximum temperature in the 5th mouthful of suction; The maximum temperature in the maximum temperature in the 6th mouthful of suction, the 7th mouthful of suction and the puff number of whole cigarette are a basic numerical value with the mean value of each item index of each group; And be defined as eight indexs of cigarette burning state; Replicate determination 5-6 organizes data, calculates the relative standard deviation RSD that 5-6 organizes eight basic numerical value of index of cigarette to be detected, with the cigarette 3R4F of the medium tar specification of Kentucky standard cigarette object as a reference; With the twice of eight index RSD of Kentucky 3R4F standard cigarette value as the stable the permitted maximum range of cigarette; RSD and eight index RSD of Kentucky 3R4F standard cigarette value of cigarette to be detected are compared, less than the stable cigarette that is of 2 times of eight index RSD of Kentucky 3R4F standard cigarette values, greater than then the cigarette of 2 times of this values for taking place obviously to change.
The present invention utilizes Kentucky standard cigarette as a reference, and eight indexs having set up the cigarette burning process are propped up the standard of combustion stability as cigarette, for production of cigarettes and research provide a kind of feasible reference.
Embodiment
The cigarette that cigarette sample adopts injection to accomplish, and with un-added sample cigarette as blank.
Temperature and humidity uses the Shanghai space mark electronics technology M288-CTH of Development Co., Ltd type SHINYEI liquid crystal display Hygrothermograph to measure; Atmospheric pressure adopts the grand space environmental protection in Shanghai Applied Research Laboratory DYS-1 type numeral rain glass to record.Temperature measuring equipment comprises single hole road smoking machine (RM1/Plus Borgwaldt), infrared thermography (FLIR SYSTEM ThermoVision
TMA40 M, 24
o* 18
o/ 0.3m, the 35mm camera lens, spatial resolution is 1.3mrad, spectral range 7.5-13 μ m) and the computer that is connected with infrared thermography, wherein computer is used for control and data acquisition, the storage of infrared thermography.Infrared thermography is set at: the highest frequency acquisition 50 Hz; Temperature measurement range is set at 350-1500 ℃; Degree of accuracy is ± 2 ℃; The all images of being gathered all uses the 16-bit bitmap, and the distance of thermal imaging system and object is 0.2m, and temperature data uses ThermaCAM Researcher 2.7 softwares to gather and handle.
Cigarette smoking adopts single hole road smoking machine; Cigarette adopts manual ignition way; Light when being unified in first mouthful of suction of smoking machine; Use infrared thermography to carry out measuring point for the temperature to be: 0s (suction beginning), maximum temperature and the 2s (suction finishes) of (cigarette smoking to the three mouthfuls time, burning begins to get into steady state (SS)) during the 3rd mouthful of suction; The maximum temperature in the maximum temperature in the maximum temperature in the maximum temperature in the four-hole suction, the 5th mouthful of suction, the 6th mouthful of suction, the 7th mouthful of suction and the puff number of whole cigarette; Each group parallel testing 5 cigarette is a basic numerical value with the mean value of each item index of each group, is defined as eight indexs of cigarette burning state, and replicate determination 5-6 organize data, the relative standard deviation (RSD) of eight basic numerical value of index of calculating.Twice (2 * RSD with eight index RSD of Kentucky 3R4F standard cigarette value
3R4F) as the stable the permitted maximum range of cigarette, the test value of each item index of all the other cigarette compares with it, less than (2 * RSD
3R4F) be stable cigarette, greater than (2 * RSD
3R4F) then cigarette for having taken place obviously to change.
With 3R4F standard cigarette balance 48h under temperature (22 ± 1) ℃, relative humidity 60% ± 2% condition, result of its test averaging of income value and RSD value is comprehensively as shown in table 1:
The mean value and the RSD value of eight indexs of table 1 Kentucky 3R4F standard cigarette grouping
As above shown in the table, if respectively organize the corresponding RSD value≤2 * RSD of sample cigarette test result each item
3R4F, can think that the fired state of these several groups of cigarette does not take place obviously to change, be homogeneous, stable.
Cigarette to be detected can be the blank cigarette that does not add other material, also can be for having added the cigarette of different material, and table 2 is instances of cigarette to be detected; The cigarette of blank coil cigarette and the eggplant Buddhist nun alcohol that has added variable concentrations is arranged, and the cigarette that has added the eggplant Buddhist nun alcohol of four kinds of different amounts is numbered 1,2 respectively; 3; 4, five groups of cigarette respectively select five to test, and the mean value that calculates its eight indexs is as master data.The average data of its five groups of cigarette and RSD numerical value are as shown in table 2;
Table 2 adds eight index values of cigarette and the RSD value of different amount eggplant Buddhist nun alcohol
| The 3rd mouthful of suction beginning | The 3rd mouthful of suction maximum temperature | The 3rd mouthful of suction finishes | Four-hole suction maximum temperature | The 5th mouthful of suction maximum temperature | The 6th mouthful of suction maximum temperature | The 7th mouthful of suction maximum temperature | Puff number | |
| Blank | 654.1 | 832.7 | 745.1 | 831.9 | 848.7 | 845.4 | 839.1 | 8.13 |
| 1 | 636.0 | 823.3 | 743.8 | 835.7 | 838.2 | 857.8 | 847.6 | 8.50 |
| 2 | 641.7 | 820.4 | 732.4 | 798.9 | 815.9 | 827.9 | 816.1 | 8.57 |
| 3 | 641.4 | 802.2 | 731.8 | 799.2 | 847.4 | 812.0 | 798.0 | 8.81 |
| 4 | 631.0 | 756.1 | 716.4 | 798.2 | 798.8 | 805.3 | 818.4 | 8.34 |
| Mean value | 640.8 | 807.0 | 733.9 | 812.8 | 829.8 | 829.7 | 823.9 | 8.5 |
| RSD | 0.013 | 0.038 | 0.016 | 0.024 | 0.026 | 0.027 | 0.024 | 0.030 |
With eight indexs in the table 2 and the (2 * RSD in the table 1
3R4F) contrast, find all (RSD≤2 * RSD in allowed band of each numerical value
3R4F), promptly in these 4 groups of cigarette, the adding of eggplant Buddhist nun alcohol does not cause the obvious change of cigarette burning state, sample cigarette and blank cigarette still have comparability.
Claims (1)
1. the detection method of cigarette stability, it is characterized in that: cigarette to be detected is one group with five cigarette, tests its aflame eight numerical value; Be respectively the temperature in the 3rd mouthful of when beginning suction, the maximum temperature in the 3rd mouthful of suction, the temperature when the 3rd mouthful of suction finishes; Maximum temperature in the maximum temperature in the maximum temperature in the four-hole suction, the 5th mouthful of suction, the 6th mouthful of suction; The maximum temperature in the 7th mouthful of suction and the puff number of whole cigarette; Mean value with each item index of each group is a basic numerical value, and is defined as eight indexs of cigarette burning state, and replicate determination 5-6 organizes data; Calculate the relative standard deviation RSD that 5-6 organizes eight basic numerical value of index of cigarette to be detected; With the cigarette 3R4F of the medium tar specification of Kentucky standard cigarette object as a reference, as the stable the permitted maximum range of cigarette, RSD and eight index RSD of Kentucky 3R4F standard cigarette value of cigarette to be detected compared with the twice of eight index RSD of Kentucky 3R4F standard cigarette value; Less than the stable cigarette that is of 2 times of eight index RSD of Kentucky 3R4F standard cigarette values, greater than then the cigarette of 2 times of this values for taking place obviously to change.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210296108 CN102830135A (en) | 2012-08-20 | 2012-08-20 | Detection method of cigarette stability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210296108 CN102830135A (en) | 2012-08-20 | 2012-08-20 | Detection method of cigarette stability |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196266A (en) * | 2019-06-19 | 2019-09-03 | 江苏中烟工业有限责任公司 | Method based on pipe tobacco distributional stability in comentropy evaluation batch inner wrap strip cigarette |
| CN110196265A (en) * | 2019-06-19 | 2019-09-03 | 江苏中烟工业有限责任公司 | Method based on pipe tobacco distributional stability in distribution probability evaluation batch inner wrap strip cigarette |
-
2012
- 2012-08-20 CN CN 201210296108 patent/CN102830135A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196266A (en) * | 2019-06-19 | 2019-09-03 | 江苏中烟工业有限责任公司 | Method based on pipe tobacco distributional stability in comentropy evaluation batch inner wrap strip cigarette |
| CN110196265A (en) * | 2019-06-19 | 2019-09-03 | 江苏中烟工业有限责任公司 | Method based on pipe tobacco distributional stability in distribution probability evaluation batch inner wrap strip cigarette |
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Application publication date: 20121219 |