CN103278530A - Method for detecting ignition performance of low-ignition-tendency cigarette - Google Patents
Method for detecting ignition performance of low-ignition-tendency cigarette Download PDFInfo
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Abstract
A method for detecting the ignition performance of low-ignition-tendency cigarette comprises the following steps: specifically inserting a temperature sensor to the axial center of a cigarette rod, igniting cigarette, allowing the cigarette to statically combust, recording the temperature data of a thermocouple, stopping the above test after a highest temperature change, analyzing the temperature change data, reading out certain-stage data in the detection process, calculating to obtain the average heating rate in the certain-stage process, calculating according to a relationship between the average heating rate and a full-length combustion proportion detected through an ASTME2187-09 or ISO12863-2010 way to obtain the full-length combustion proportion, and evaluating the ignition performance of the low-ignition-tendency cigarette according to the data of the full-length combustion proportion. The method has the following advantages: the detection time is short, and the detection time of one sample is 10-15min; the repeatability of the detection result is good, and is obviously higher than that of a traditional detection method; and the detection cost is low and is lower than 5yuan, and a detection apparatus can be repeatedly used.
Description
technical field:
The present invention relates to cigarette product quality index detection field, specifically a kind of method that detects the performance of igniting of low ignition tendency cigarette.
Background technology
In recent years, along with the concern of countries in the world to tobacco product harm improves day by day, consumer and society are except paying close attention to the harm of cigarette to health of people, the harm of the security incident that the special concern tobacco causes fire, how to reduce the possibility that tobacco causes fire, low ignition tendency cigarette (Low Ignition Propensity Cigarette, the LIP cigarette) just more and more paid close attention to, the research of this direction has at present become the 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.) relevant laws and regulations of LIP cigarette have been formulated or have formulated, in the hope of reducing the ignite possibility of other combustibles of cigarette.At present, the LIP cigarette is mainly by with the inhibiting tape cigarette paper, changing ignition tendency, the possibility of other article thereby the reduction cigarette ignites.How to estimate the ignition tendency of LIP cigarette, the method that generally adopts at present ASTM E2187--09 or ISO 12863-2010 to formulate, the principle of two kinds of method of testings is identical, that is: be placed on after the LIP cigarette is lighted on the matrix (being generally filter paper) of certain number of plies and glow, add up the combustion case (total length burn or certainly put out) of this LIP cigarette on matrix, the total length of usining burning ratio is as its testing result.This method of testing exists detection time longer, 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 over 5000 yuans.
Summary of the invention
The problem that purpose of the present invention exists for above-mentioned existing method just, propose a kind of method that detects the performance of igniting of low ignition tendency cigarette.Can quantize to provide the concrete data of the performance of igniting of low ignition tendency cigarette by the method, and then as the foundation of estimating LIP cigarette's quality quality.
The objective of the invention is to be achieved through the following technical solutions: a kind of ignite method of performance of low ignition tendency cigarette that detects: the axial centre place that the temperature sensor fixed point is inserted to Cigarette, after lighting cigarette, quiet combustion, record the temperature data (the temperature acquisition frequency is not less than 10 hertz/sec) of thermopair, after the waiting temperature experience highest temperature changes, stop test, to the temperature variation data analysis, read certain segment data in testing process, the average heating rate of calculating in this section process, there is correlativity between the testing result total length burning ratio of these data and ASTM E2187--09 or ISO 12863-2010 method, utilize this correlativity, calculate total length burning ratio, and using this total length burning ratio data as think poorly of the ignition tendency cigarette ignite performance according to
.
The concrete steps of the method are as follows:
The preparation of a, cigarette sample, be 22 ± 2 ℃ in temperature, under the environment that relative humidity is 60 ± 5%, by cigarette sample balance 48 hours;
B, temperature sensor fixed point are inserted cigarette sample, utilize cigarette to burn and suck the temperature detection part producing device temperature sensor is inserted on tested cigarette to radial center position, inhibiting tape fire end edge on the second cigarette paper, temperature sensor is connected with temperature data acquisition device by the temperature sensor compensating wire;
C, the tested cigarette that will be inserted with temperature sensor are placed on cigarette clamper or smoking machine, light tested cigarette, start quiet combustion, temperature data acquisition device is started working, the temperature that records temperature sensor insertion position in tested cigarette is trend over time, the temperature acquisition frequency is not less than 10 hertz/sec, be down to 100 ℃ after descending appears in the temperature of temperature sensor insertion position after, finishes this test;
D, setting characteristic temperature, calculate the heating rate while arriving characteristic temperature, does difference according to the front data of arrival mark temperature and calculate, and obtains arriving the heating rate of mark temperature;
E, repeat the heating rate that above test process obtains two other same sample;
F, utilize the relation of heating rate and total length burning ratio to calculate total length burning ratio, by in above-mentioned steps, detect obtain the heating rate result bring into following concern total length burning ratio (%)=-49.75+11.034 * heating rate, can calculate total length burning ratio
.(this formula is by selecting the sample of 100 kinds of kinds of cigarettes ignition tendencies, utilize and detect the heating rate obtained, utilize ISO 12863-2010 method to obtain total length burning ratio result simultaneously, utilize linear regression method, obtain the relation of heating rate and total length burning ratio).
In the selection of cigarette sample, utilize multi-functional test desk to select cigarette weight at hundred average individual cigarette weight ± 20mg of sample, 10 of the cigarette of resistance to suction in average single the resistance to suction ± 50Pa scope of hundred samples.
When utilizing heating rate to calculate total length burning ratio, according to the physical significance of total length burning ratio, when calculated value is less than 0%, total length burning ratio is designated as 0; When calculated value is greater than 100%, total length burning ratio is designated as 100%.
The thermopair that described temperature sensor is diameter 0.25mm.
This invention has the following advantages:
1, detection time short, the time of detecting a sample is 10 minutes～15 minutes;
2, testing result is reproducible, obviously is 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.
The 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 is intercepting certain section temperature variation data (heating rate is 6.77).
Fig. 4 is heating rate and total length burning ratio 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, be 22 ± 2 ℃ in temperature, under the environment that relative humidity is 60 ± 5%, by cigarette sample balance 48 hours.Utilize multi-functional test desk to select cigarette weight at hundred average individual cigarette weight ± 20mg of sample, 10 of the cigarette of resistance to suction in average single the resistance to suction ± 50Pa scope of hundred samples.
B, temperature sensor fixed point are inserted cigarette sample.As shown in Figure 1, (patent publication No.: CN102680141A) temperature sensor 3 spacings are inserted into to temperature sensor insertion position 4, the spacing precision is 0.01mm to utilize new cigarette to burn and suck the temperature detection part producing device.Temperature sensor insertion position 4 is positioned on tested cigarette 1 inhibiting tape 2 radial center positions, fire end edge on the second 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 the temperature that records temperature sensor insertion position 4 in tested cigarette 1 is trend (the temperature acquisition frequency is not less than 10 hertz/sec) over time, after the temperature of temperature sensor insertion position 4 is down to 100 ℃, finish this test.This time the 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.To arrive the data of mark temperature in accompanying drawing 2 (for example, for can select 480 ℃, obtaining heating rate faster near this point) front 4 number of seconds can obtain accompanying drawing 3 according to sectional drawing, to detecting data, utilize least square method to obtain the linear equation of data in accompanying drawing 3, slope in linear equation is heating rate, and its result is 6.77 ℃/secs.
E, repeat the heating rate that above test process obtains two other same sample, its result is respectively: 6.95 ℃/secs, 6.73 ℃/secs, the mean value of three tests is 6.82 ℃/secs, and standard deviation is 0.12 ℃/sec.
F, utilize the relation of heating rate and total length burning ratio to calculate total length burning ratio.Utilize the heating rate of this check point and ASTM E2187--09 method to detect between total length burning ratio and have correlativity (as shown in Figure 4), this correlationship is: total length burning ratio (%)=-49.75+11.034 * heating rate.Obtaining this low ignition tendency cigarette total length burning ratio is: 25.5%, and standard deviation is 1.29%.
When utilizing heating rate to calculate total length burning ratio, according to the physical significance of total length burning ratio, when calculated value is less than 0%, total length burning ratio is designated as 0 in addition; When calculated value is greater than 100%, total length burning ratio is designated as 100%.
Claims (5)
1. one kind is detected the ignite method of performance of low ignition tendency cigarette, it is characterized in that: the axial centre place that the temperature sensor fixed point is inserted to Cigarette, after lighting cigarette, quiet combustion, record the temperature data of thermopair, the temperature acquisition frequency is not less than 10 hertz/sec, after the waiting temperature experience highest temperature changes, stop test, to the temperature variation data analysis, read certain segment data in testing process, the average heating rate of calculating in this section process, there is correlativity between the testing result total length burning ratio of these data and ASTM E2187--09 or ISO 12863-2010 method, utilize this correlativity, calculate total length burning ratio, and using this total length burning ratio data as thinking poorly of the ignite foundation of performance of ignition tendency cigarette.
2. the detection low ignition tendency cigarette according to claim 1 method of performance of igniting, it is characterized in that: the concrete steps of the method are as follows:
The preparation of a, cigarette sample, be 22 ± 2 ℃ in temperature, under the environment that relative humidity is 60 ± 5%, by cigarette sample balance 48 hours;
B, temperature sensor fixed point are inserted cigarette sample, utilize cigarette to burn and suck the temperature detection part producing device temperature sensor is inserted on tested cigarette to radial center position, inhibiting tape fire end edge on the second cigarette paper, temperature sensor is connected with temperature data acquisition device by the temperature sensor compensating wire;
C, the tested cigarette that will be inserted with temperature sensor are placed on cigarette clamper or smoking machine, light tested cigarette, start quiet combustion, temperature data acquisition device is started working, the temperature that records temperature sensor insertion position in tested cigarette is trend over time, the temperature acquisition frequency is not less than 10 hertz/sec, after descending appears in the temperature of temperature sensor insertion position, finishes this test;
D, setting characteristic temperature, calculate the heating rate while arriving characteristic temperature, does difference according to the front data of arrival characteristic temperature and calculate, and obtains arriving the heating rate of characteristic temperature;
E, repeat the heating rate that above test process obtains two other same sample;
F, utilize the relation of heating rate and total length burning ratio to calculate total length burning ratio, by in above-mentioned steps, detect obtain the heating rate result bring into following concern total length burning ratio (%)=-49.75+11.034 * heating rate, can calculate total length burning ratio.
3. the detection low ignition tendency cigarette according to claim 2 method of performance of igniting, 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, 10 of the cigarette of resistance to suction in average single the resistance to suction ± 50Pa scope of hundred samples.
4. the detection low ignition tendency cigarette according to claim 1 and 2 method of performance of igniting, it is characterized in that: when utilizing heating rate to calculate total length burning ratio, according to the physical significance of total length burning ratio, when calculated value is less than 0%, total length burning ratio is designated as 0; When calculated value is greater than 100%, total length burning ratio is designated as 100%.
5. the detection low ignition tendency cigarette according to claim 1 and 2 method of performance of igniting, is characterized in that: the thermopair that described temperature sensor is diameter 0.25mm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487549A (en) * | 2013-10-13 | 2014-01-01 | 中国烟草总公司郑州烟草研究院 | Method for evaluating and testing ignition tendency of cigarette |
| CN103487462A (en) * | 2013-10-13 | 2014-01-01 | 中国烟草总公司郑州烟草研究院 | Cigarette ignition tendency testing device based on oxygen consumption principle |
| CN108279256A (en) * | 2018-02-02 | 2018-07-13 | 中国烟草总公司郑州烟草研究院 | A kind of cigarette based on temperature barycenter deflagrates rate characterizing method |
| CN110595638A (en) * | 2019-09-20 | 2019-12-20 | 云南巴菰生物科技有限公司 | Embedded contact cigarette temperature measuring equipment |
| CN110988252A (en) * | 2019-12-16 | 2020-04-10 | 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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2013
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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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| 潘曦等: "卷烟引燃倾向测试方法的研究与改进", 《中国烟草学报》, vol. 18, no. 4, 31 August 2002 (2002-08-31), pages 27 - 30 * |
| 邢军等: "《中国烟草学会2009年年会论文集》", 31 December 2009, article "低引燃倾向（LIP）卷烟纸对卷烟引燃性能的影响", pages: 15-22 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487549A (en) * | 2013-10-13 | 2014-01-01 | 中国烟草总公司郑州烟草研究院 | Method for evaluating and testing ignition tendency of cigarette |
| CN103487462A (en) * | 2013-10-13 | 2014-01-01 | 中国烟草总公司郑州烟草研究院 | Cigarette ignition tendency testing device based on oxygen consumption principle |
| CN108279256A (en) * | 2018-02-02 | 2018-07-13 | 中国烟草总公司郑州烟草研究院 | A kind of cigarette based on temperature barycenter deflagrates rate characterizing method |
| CN110595638A (en) * | 2019-09-20 | 2019-12-20 | 云南巴菰生物科技有限公司 | Embedded contact cigarette temperature measuring equipment |
| 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 |
| CN110988252A (en) * | 2019-12-16 | 2020-04-10 | 浙江中烟工业有限责任公司 | Cigarette ignition tendency evaluation method |
| 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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