CN103278530B - A kind of low ignition tendency cigarette that detects ignites the method for performance - Google Patents
A kind of low ignition tendency cigarette that detects ignites the method for performance Download PDFInfo
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Abstract
A kind of low ignition tendency cigarette that detects ignites the method for performance, it is characterized in that: axial centre place temperature sensor fixed point being inserted Cigarette, after lighting cigarette, quiet combustion, the temperature data of record thermopair, after the change of the waiting temperature experience highest temperature, stop test, temperature variation data is analyzed, read certain segment data in testing process, calculate the average heating rate in this section of process, correlativity is there is between the testing result total length combusted proportion of these data and ASTM E2187--09 or ISO 12863-2010 method, utilize this correlativity, calculate total length combusted proportion, and to ignite the foundation of performance using these total length combusted proportion data as thinking poorly of ignition tendency cigarette.The advantage of this invention is: detection time is short, and the time detecting a sample is 10 ~ 15 minutes; Testing result reproducible, is obviously better than traditional detection method; Testing cost is low, and lower than 5 yuan, pick-up unit can be reused.
Description
technical field:
The present invention relates to cigarette product quality index detection field, specifically a kind of method detecting the performance of igniting of low ignition tendency cigarette.
Background technology
In recent years, along with countries in the world are improved day by day to the concern that tobacco product endangers, consumer and society are except paying close attention to cigarette to except the harm of health of people, special concern tobacco is to the harm of the security incident that fire causes, how to reduce the possibility that tobacco causes fire, low ignition tendency cigarette (Low Ignition Propensity Cigarette, LIP cigarette) just more and more paid close attention to, the research in this direction has at present become a hot issue of international tobacco circle, many countries and regions are (as Canada, the U.S., Australia, European Union, South Africa, New Zealand, Korea S etc.) formulate or formulated the relevant laws and regulations of LIP cigarette, to ignite the possibility of other combustibles in the hope of reducing cigarette.At present, LIP cigarette mainly changes ignition tendency by use inhibiting tape cigarette paper, the possibility of other article thus reduction cigarette ignites.How to evaluate the ignition tendency of LIP cigarette, generally adopt the method that ASTM E2187--09 or ISO 12863-2010 formulates at present, the principle of two kinds of method of testings is identical, that is: the matrix (being generally filter paper) being placed on certain number of plies after being lighted by LIP cigarette is glowed, add up the combustion case of this LIP cigarette in matrix (total length is burnt or certainly put out), using total length combusted proportion as its testing result.It is longer to there is detection time in this method of testing, and usually detecting a sample needs 2 working days; Detect the repeatability poor (standard deviation of test result is 10%-20%) of data; Testing cost is higher, and the filter paper used in the method needs import, and the detection data expense of a sample is more than 5000 yuans.
Summary of the invention
Object of the present invention, just for above-mentioned existing method Problems existing, proposes a kind of method detecting the performance of igniting of low ignition tendency cigarette.The concrete data of the performance of igniting providing low ignition tendency cigarette can be quantized by the method, and then as evaluating the foundation of LIP cigarette's quality quality.
The object of the invention is to be achieved through the following technical solutions: a kind of low ignition tendency cigarette that detects ignites the method for performance: axial centre place temperature sensor fixed point being inserted Cigarette, after lighting cigarette, quiet combustion, the temperature data (temperature acquisition frequency is not less than 10 hertz/sec) of record thermopair, after the change of the waiting temperature experience highest temperature, stop test, temperature variation data is analyzed, read certain segment data in testing process, calculate the average heating rate in this section of process, correlativity is there is between the testing result total length combusted proportion of these data and ASTM E2187--09 or ISO 12863-2010 method, utilize this correlativity, calculate total length combusted proportion, and using these total length combusted proportion data as think poorly of ignition tendency cigarette ignite performance according to
.
The concrete steps of the method are as follows:
The preparation of a, cigarette sample is 22 ± 2 DEG C in temperature, and relative humidity is under the environment of 60 ± 5%, cigarette sample is balanced 48 hours;
B, temperature sensor fixed point inserts cigarette sample, utilize cigarette to burn and suck temperature detection part producing device and temperature sensor to be inserted on tested cigarette radial center position, inhibiting tape fire end edge on Article 2 cigarette paper, temperature sensor is connected with temperature data acquisition device by temperature sensor compensating wire;
C, the tested cigarette being inserted with temperature sensor is placed on cigarette clamper or smoking machine, light tested cigarette, start quiet combustion, temperature data acquisition device is started working, record the temperature trend over time of temperature sensor insertion position in tested cigarette, temperature acquisition frequency is not less than 10 hertz/sec, after being namely down to 100 DEG C, terminates this test after decline appears in the temperature of temperature sensor insertion position;
D, setting characteristic temperature, calculate heating rate when arriving characteristic temperature, does mathematic interpolation, obtain the heating rate arriving mark temperature according to data before arrival mark temperature;
E, repeat the heating rate that above test process obtains two other same sample;
F, the relation of heating rate and total length combusted proportion is utilized to calculate total length combusted proportion, detection in above-mentioned steps is obtained heating rate result and brings following relation total length combusted proportion (%)=-49.75+11.034 × heating rate into, total length combusted proportion
can be calculated.(this formula is the sample by selecting 100 kinds of kinds of cigarettes ignition tendencies, utilize the heating rate detecting and obtain, utilize ISO 12863-2010 method to obtain total length combusted proportion result simultaneously, utilize linear regression method, obtain the relation of heating rate and total length combusted proportion).
In the selection of cigarette sample, utilize multi-functional test desk to select cigarette weight at hundred average individual cigarette weight ± 20mg of sample, resistance to suction on average singly props up the cigarette 10 within the scope of resistance to suction ± 50Pa at hundred samples.
When utilizing heating rate to calculate total length combusted proportion, according to the physical significance of total length combusted proportion, when calculated value is less than 0%, then total length combusted proportion is designated as 0; When calculated value is greater than 100%, then total length combusted proportion is designated as 100%.
Described temperature sensor is the thermopair of diameter 0.25mm.
This invention has the following advantages:
1, detection time is short, and the time detecting a sample is 10 minutes ~ 15 minutes;
2, testing result is reproducible, is obviously better than traditional detection method;
3, testing cost is low, and pick-up unit can be reused, and detects the consumptive material expense of each sample lower than 5 yuans.
Accompanying drawing explanation
Fig. 1 is the device for detecting performance schematic diagram that ignites.
In figure: 1, tested cigarette; 2, inhibiting tape on cigarette paper; 3, temperature sensor (thermopair, diameter is 0.25mm); 4, temperature sensor insertion position; 5, temperature sensor compensating wire; 6, temperature data acquisition device; 7, cigarette clamper or smoking machine.
Fig. 2 is temperature data rule over time in quiet combustion process.
Fig. 3 intercepts certain section of temperature variation data (heating rate is 6.77).
Fig. 4 is heating rate and total length combusted proportion graph of a relation.
Embodiment
The present invention is described further assay method below with reference to accompanying drawing:
The preparation of a, cigarette sample is 22 ± 2 DEG C in temperature, and relative humidity is under the environment of 60 ± 5%, cigarette sample is balanced 48 hours.Utilize multi-functional test desk to select cigarette weight at hundred average individual cigarette weight ± 20mg of sample, resistance to suction on average singly props up the cigarette 10 within the scope of resistance to suction ± 50Pa at hundred samples.
B, temperature sensor fixed point inserts cigarette sample.As shown in Figure 1, utilize new cigarette to burn and suck temperature detection part producing device (patent publication No.: CN102680141A) and temperature sensor 3 spacing is inserted into temperature sensor insertion position 4, spacing precision is 0.01mm.Temperature sensor insertion position 4 to be positioned on tested cigarette 1 radial center position, inhibiting tape 2 fire end edge on Article 2 cigarette paper; Temperature data acquisition device 6 is connected with temperature sensor 3 by temperature sensor compensating wire 5.
After c, temperature sensor 3 insert tested cigarette 1, tested cigarette 1 is placed on cigarette clamper or smoking machine 7, by automatic ignition device or burning things which may cause a fire disaster, light tested cigarette 1, start quiet combustion, temperature data acquisition device 6 is started working, and records the temperature trend (temperature acquisition frequency is not less than 10 hertz/sec) over time of temperature sensor insertion position 4 in tested cigarette 1, after the temperature of temperature sensor insertion position 4 is down to 100 DEG C, terminate this test.This time test in temperature sensor insertion position 4 temperature over time trend see shown in accompanying drawing 2.
D, constant temperature sectional drawing calculate heating rate.The data of mark temperature will be arrived (such as 480 DEG C can be selected in accompanying drawing 2, heating rate is faster obtained near this point) front 4 number of seconds can obtain accompanying drawing 3 according to sectional drawing, detection data separate least square method is obtained to the linear equation of data in accompanying drawing 3, slope in linear equation is heating rate, and its result is 6.77 DEG C/sec.
E, repeat the heating rate that above test process obtains two other same sample, its result is respectively: 6.95 DEG C/sec, 6.73 DEG C/sec, and the mean value of three tests is 6.82 DEG C/sec, and standard deviation is 0.12 DEG C/sec.
F, the relation of heating rate and total length combusted proportion is utilized to calculate total length combusted proportion.Utilize the heating rate of this check point and ASTM E2187--09 method to detect between total length combusted proportion and there is correlativity (as shown in Figure 4), this correlationship is: total length combusted proportion (%)=-49.75+11.034 × heating rate.Obtaining this low ignition tendency cigarette total length combusted proportion is: 25.5%, and standard deviation is 1.29%.
In addition when utilizing heating rate to calculate total length combusted proportion, according to the physical significance of total length combusted proportion, when calculated value is less than 0%, then total length combusted proportion is designated as 0; When calculated value is greater than 100%, then total length combusted proportion is designated as 100%.
Claims (4)
1. one kind is detected low ignition tendency cigarette and to ignite the method for performance, it is characterized in that: axial centre place temperature sensor fixed point being inserted Cigarette, after lighting cigarette, quiet combustion, the temperature data of record thermopair, temperature acquisition frequency is not less than 10 hertz/sec, after the change of the waiting temperature experience highest temperature, stop test, temperature variation data is analyzed, read certain segment data in testing process, calculate the average heating rate in this section of process, correlativity is there is between the testing result total length combusted proportion of these data and ASTM E2187--09 or ISO 12863-2010 method, utilize this correlativity, calculate total length combusted proportion, the model initial stage of setting up to ignite the foundation of performance using these total length combusted proportion data as thinking poorly of ignition tendency cigarette, concrete steps are as follows:
The preparation of a, cigarette sample is 22 ± 2 DEG C in temperature, and relative humidity is under the environment of 60 ± 5%, cigarette sample is balanced 48 hours;
B, temperature sensor fixed point inserts cigarette sample, utilize cigarette to burn and suck temperature detection part producing device and temperature sensor to be inserted on tested cigarette radial center position, inhibiting tape fire end edge on Article 2 cigarette paper, temperature sensor is connected with temperature data acquisition device by temperature sensor compensating wire;
C, the tested cigarette being inserted with temperature sensor is placed on cigarette clamper or smoking machine, light tested cigarette, start quiet combustion, temperature data acquisition device is started working, record the temperature trend over time of temperature sensor insertion position in tested cigarette, temperature acquisition frequency is not less than 10 hertz/sec, after decline appears in the temperature of temperature sensor insertion position, terminates this test;
D, setting characteristic temperature are 480 DEG C, calculate heating rate when arriving characteristic temperature, do mathematic interpolation, obtain the heating rate arriving characteristic temperature according to data before arrival characteristic temperature;
E, repeat the heating rate that above test process obtains two other same sample;
F, the relation of heating rate and total length combusted proportion is utilized to calculate total length combusted proportion, detection in above-mentioned steps is obtained heating rate result and brings following relation total length combusted proportion (%)=-49.75+11.034 × heating rate into, total length combusted proportion can be calculated.
2. detection low ignition tendency cigarette according to claim 1 ignites the method for performance, it is characterized in that: in the selection of cigarette sample, utilize multi-functional test desk to select cigarette weight at hundred average individual cigarette weight ± 20mg of sample, resistance to suction on average singly props up the cigarette 10 within the scope of resistance to suction ± 50Pa at hundred samples.
3. detection low ignition tendency cigarette according to claim 1 ignites the method for performance, it is characterized in that: when utilizing heating rate to calculate total length combusted proportion, when calculated value is less than 0%, then total length combusted proportion is designated as 0; When calculated value is greater than 100%, then total length combusted proportion is designated as 100%.
4. detection low ignition tendency cigarette according to claim 1 ignites the method for performance, it is characterized in that: described temperature sensor is the thermopair of diameter 0.25mm.
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| CN103487462B (en) * | 2013-10-13 | 2015-08-26 | 中国烟草总公司郑州烟草研究院 | Based on the cigarette ignition tendency proving installation of oxygen consumption principle |
| CN103487549B (en) * | 2013-10-13 | 2015-03-04 | 中国烟草总公司郑州烟草研究院 | Method for evaluating and testing ignition tendency of cigarette |
| CN108279256B (en) * | 2018-02-02 | 2020-10-30 | 中国烟草总公司郑州烟草研究院 | Cigarette instantaneous burning rate characterization method based on temperature centroid |
| CN110595638B (en) * | 2019-09-20 | 2024-02-20 | 云南巴菰生物科技股份有限公司 | Embedded contact type cigarette temperature measuring equipment |
| CN110988252B (en) * | 2019-12-16 | 2022-03-08 | 浙江中烟工业有限责任公司 | Cigarette ignition tendency evaluation method |
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| CN101226186A (en) * | 2007-12-30 | 2008-07-23 | 中国烟草总公司郑州烟草研究院 | Method for determining cigarette paper smolder speed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101226186A (en) * | 2007-12-30 | 2008-07-23 | 中国烟草总公司郑州烟草研究院 | Method for determining cigarette paper smolder speed |
Non-Patent Citations (2)
| Title |
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| 卷烟引燃倾向测试方法的研究与改进;潘曦等;《中国烟草学报》;20020831;第18卷(第4期);27-30页 * |
| 邢军等.低引燃倾向(LIP)卷烟纸对卷烟引燃性能的影响.《中国烟草学会2009年年会论文集》.2009,第15-22页. * |
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