A detection method for the saliva color fastness of transfer tipping paper

Abstract

The present invention provides a method for detecting the saliva color fastness of transfer tipping paper, including: preparing two pieces of transfer tipping paper, namely a test sample and a comparison sample; pouring simulated saliva into a beaker and preheating it to (40±2)°C in a water bath; immersing the test sample in the preheated simulated saliva for soaking; taking out the beaker containing the soaked test sample and placing it on an oscillator for oscillation; laying the test sample flat on a cardboard, drying it in the dark and fixing it flat on the cardboard, and visually comparing it with the comparison sample; using a multi-spectral color measuring instrument to detect the colors of the test sample and the comparison sample with visual color difference, and respectively recording the detection values; calculating the difference between the detection value of the test sample and the detection value of the comparison sample as the detection difference; and judging the saliva color fastness performance of the transfer tipping paper according to the magnitude of the detection difference. This method realizes the detection of the saliva color fastness of transfer tipping paper, and eliminates the potential fluctuations in product quality caused by the color fastness of transfer tipping paper.

Description

Technical Field

[0001] The present invention relates to the technical field of analysis of the color fastness of transfer tipping paper, and particularly relates to a method for detecting the saliva color fastness of transfer tipping paper. Background Art

[0002] With the rapid development of the tobacco industry, the use of cigarette tipping paper is no longer limited to simple packaging, and more attention is paid to decoration and printing aesthetics. The printed transfer cigarette tipping paper has better surface gloss and extremely strong color reducibility, providing new features, highlights and selling points for cigarette design, and is more and more popular in the industry. Due to different smoking habits of consumers, in some cases, when consumers smoke and "bite the cigarette filter tip", the transfer tipping paper will decolorize and the ink layer will peel off.

[0003] At present, the domestic method for detecting the saliva color fastness of cigarette tipping paper is as follows: a combined sample is formed by laminating a sample of tipping paper with a glass fiber paper wetted with a saliva simulating solution, and placed in a temperature environment of 40°C and under a load pressure of 1 kg for a period of time, and a color difference meter is used to evaluate the staining degree of the glass fiber paper.

[0004] The existing detection method has the following defects: 1. The pressing of the weight is a static action, which cannot effectively simulate the dynamic reaction process between the tipping paper and the oral cavity during the smoking process, and the detection efficiency of the saliva color fastness of the transfer tipping paper different from the traditional tipping paper is low; 2. The measurement of the color difference meter is limited by the size of the measurement aperture, and it is impossible to perform a large-range overall detection of the sample; 3. The light column effect on the test sample interferes with the detection data of the color difference meter.

[0005] At present, there are few reports on the detection method of the saliva color fastness of transfer tipping paper in the tobacco industry. In order to form a monitoring system for the saliva color fastness of transfer tipping paper, it is urgent to develop a better method for detecting the saliva color fastness of transfer tipping paper. Summary of the Invention

[0006] The purpose of the present invention is to provide a method for detecting the saliva color fastness of transfer tipping paper, so as to realize the detection of the saliva color fastness of transfer tipping paper, eliminate the potential fluctuations in product quality caused by the color fastness of transfer tipping paper, and improve the customer experience quality.

[0007] To achieve the above purpose, a method for detecting the saliva color fastness of transfer tipping paper of the present invention includes the following steps:

[0008] S1 Prepare samples, prepare two pieces of transfer tipping paper, one of which is used as a test sample and the other is used as a comparison sample;

[0009] S2 Pour simulated saliva into a beaker and preheat it to (40±2)°C in a water bath;

[0010] S3 Immerse the test sample in the preheated simulated saliva and keep the beaker in the water bath without removing it during the process.

[0011] S4 Take out the beaker containing the test sample from the water bath and place it on an oscillator for oscillation.

[0012] S5 Lay the oscillated test sample flat on the cardboard and let it dry in the dark.

[0013] S6 Fix the completely dried test sample flat on the cardboard and visually compare it with the control sample.

[0014] S7 Use a multi - spectral color measuring instrument to detect the colors of the test sample and the control sample with visual color difference, and record the detection values respectively.

[0015] Calculate the difference between the detection value of the test sample and the detection value of the control sample as the detection difference.

[0016] Judge the saliva color fastness performance of the transfer tipping paper according to the size of the detection difference.

[0017] Preferably, in step S3, the test sample is immersed in the preheated simulated saliva for 5 minutes, and the beaker is kept in the water bath without removing it during the process. Immersing for this duration and keeping the beaker in the water bath makes the temperature of the simulated saliva closer to the environmental temperature and duration when the transfer tipping paper is in use by the customer during smoking, and the test results are more accurate.

[0018] Preferably, in step S4, the vibration frequency of the oscillator is set to 100 r / m, and the oscillation duration is 5 minutes. This vibration frequency and duration are closer to the environment and duration when the transfer tipping paper is in use by the customer during smoking, and the test results are more accurate.

[0019] Preferably, the cardboard is white cardboard, which has the lowest interference to the visual comparison as the background color of the test sample and the control sample.

[0020] Preferably, the test sample includes at least one side edge. When including the side edge, the sampling of the paper is closer to the actual use state.

[0021] Preferably, the size of the test sample is 50 mm × 30 mm. In step S2, 100 ml of simulated saliva is poured into the beaker to immerse the test sample. The test sample of this size is close to the size of the transfer tipping paper actually used for cigarettes and can be completely immersed in 100 ml of simulated saliva.

[0022] Preferably, when preparing the test sample in step S1, prepare a transfer tipping paper, cut it into multiple pieces, at least 1 piece as the control sample, and the rest as parallel test samples.

[0023] The multi-spectral color measuring instrument for S8 is used to detect the colors of the test sample and the comparison sample, and the detected values are recorded respectively;

[0024] Calculate the average value of the detected values of the test sample;

[0025] Take the difference between the average value of the detected values and the detected values of the comparison sample as the detection difference, and then judge the saliva color fastness performance of the transfer tipping paper according to the magnitude of the detection difference.

[0026] Preferably, before step S7, the detection method further includes:

[0027] In step S70, the multi-spectral color measuring instrument is used to detect the colors of the test sample and the comparison sample with no visual color difference, and the detected values are recorded respectively;

[0028] Calculate the difference between the detected value of the test sample and the detected value of one of the comparison samples or the average value of the detected values of the comparison samples as the calibration difference;

[0029] In step S7, it is judged whether the saliva color fastness performance of the transfer tipping paper meets the standard according to whether the detection difference is less than the calibration difference.

[0030] Preferably, the average value of the detected values is: the average value obtained by averaging the multiple average values of the detected values obtained from the test samples whose visual color differences selected multiple times are all near the qualified standard.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention provides a method for detecting the saliva color fastness of transfer tipping paper, soaking the transfer tipping paper with simulated saliva and oscillating it, and combining multi-spectral color measurement and analysis to determine the saliva color fastness of the sample.

[0033] This method can effectively simulate the dynamic action process of oral saliva and transfer tipping paper when consumers consume cigarette products, reduce the data fluctuation caused by the selection of the detection area position when detecting the saliva color fastness with a traditional color difference meter, and at the same time can also reduce the interference of the light column on the transfer tipping paper to the detection result of the color difference meter. It is applicable to the analysis and detection of high-gloss transfer tipping paper, and has the characteristics of low detection limit, high precision, fast and sensitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The first group of visual inspection tables for the method for detecting the saliva color fastness of the transfer tipping paper of the present invention

[0035] Figure 2 The second group of visual inspection tables for the method for detecting the saliva color fastness of the transfer tipping paper of the present invention

[0036] Figure 3 ForFigure 2 Comparison chart of spectral reflection curves of various samples shown Specific implementation mode

[0037] To clearly describe the present utility model, it will be further described in detail below in conjunction with the accompanying drawings.

[0038] Method 1

[0039] A detection method for the saliva color fastness of transfer tipping paper of the present invention includes the following steps:

[0040] S1 Prepare samples. Prepare two pieces of transfer tipping paper with a size of 50 mm × 30 mm. The size of this test sample is close to the size of the transfer tipping paper actually used for cigarettes. One of them is used as the test sample, and the other is used as the comparison sample;

[0041] S2 Pour 100 ml of simulated saliva into a beaker and preheat it to (40 ± 2) °C in a water bath;

[0042] S3 Immerse the test sample in the preheated simulated saliva and soak for 5 minutes, keeping the beaker in the water bath during this period; soaking for this duration and keeping the beaker in the water bath can make the temperature of the simulated saliva closer to the temperature and duration of the transfer tipping paper during the customer's smoking, and the test results are more accurate.

[0043] S4 Take out the beaker containing the test sample from the water bath and place it on an oscillator for oscillation; the vibration frequency is set to 100 r / m, and the oscillation duration is 5 minutes. This vibration frequency and duration are closer to the environment and duration of the transfer tipping paper during the customer's smoking, and the test results are more accurate.

[0044] S5 Spread the oscillated test sample flat on white cardboard and dry it in the dark;

[0045] S6 Fix the completely dried test sample flat on the white cardboard and visually compare it with the comparison sample; using white cardboard as the background color of the test sample and the comparison sample has the lowest interference to the visual comparison.

[0046] S7 Use a multi-spectral color measuring instrument to detect the colors of the test sample and the comparison sample with visual color difference, and record the detection values respectively;

[0047] Calculate the difference between the detection value of the test sample and the detection value of the comparison sample as the detection difference;

[0048] Judge the saliva color fastness performance of the transfer tipping paper according to the size of the detection difference. The larger the detection difference, the worse the saliva color fastness performance of the transfer tipping paper.

[0049] As Figure 1 Shown in Table 1 of the visual inspection results of 3 groups of samples.

[0050] According to the above method 1, for the above Figure 1 The multi-spectral color measurement results obtained by detecting samples 1, 2, and 3 are shown in Table 2 below.

[0051] Table 2 Multi-spectral color measurement results

[0052]

[0053] The magnitudes of the detection differences DE of samples 1, 2, and 3 are 6.93, 2.89, and 4.31 respectively. Combining Tables 1 and 2, it can be seen that the greater the detection difference DE, the poorer the saliva color fastness of the transfer tipping paper.

[0054] In practical applications, when the saliva color fastness performance of the transfer tipping paper is within a certain range, it can be regarded as a qualified / standard-compliant transfer tipping paper. In order to obtain the standard for the saliva color fastness of the transfer tipping paper to meet the standard, before step S7, a test sample with a visual color difference near the qualified standard can be selected first (see sample 3 in Table 1), and the colors of the test sample and the comparison sample can be detected using a multi-spectral color measuring instrument, and the detection values can be recorded respectively;

[0055] Calculate the difference between the detection value of the test sample and the detection value of the comparison sample (see DE 4.31 of sample 3 in Table 2) as the calibration difference;

[0056] Subsequently, during detection, based on whether the detection difference is less than the calibration difference, it is judged whether the saliva color fastness performance of the transfer tipping paper meets the standard: the DE value of sample 1, 6.93, is greater than the DE value of sample 3, 4.31, so it is determined that sample 1 is unqualified; the DE value of sample 2, 2.89, is less than the DE value of sample 3, 4.31, so it is determined that sample 2 is qualified.

[0057] Method 2

[0058] A method for detecting the saliva color fastness of a transfer tipping paper of the present invention includes the following steps:

[0059] S1 Prepare a test specimen. Prepare a transfer tipping paper and cut it into 4 pieces of transfer tipping paper with a size of 50 mm × 30 mm including a single side. The test specimen of this size is close to the size of the transfer tipping paper actually used for cigarettes. When including a single side, the sampling of the paper is closer to the actual use sample. Among them, 3 pieces are used as parallel test specimens (parallel specimen 1, parallel specimen 2, parallel specimen 3), and 1 piece is used as a comparison sample;

[0060] S2 To avoid color interference, pour 100 ml of simulated saliva into 3 beakers respectively and preheat it to (40 ± 2) °C in a water bath;

[0061] S3 immerses the three test samples in the preheated simulated saliva for 5 minutes respectively, during which the beaker is kept in the water bath; soaking for this period of time and keeping the beaker in the water bath makes the temperature of the simulated saliva closer to the ambient temperature and duration of the transfer paper when the customer smokes, and the test result is more accurate.

[0062] S4 takes out three beakers containing test samples from the water bath and puts them on the oscillator for oscillation; the vibration frequency is set to 100r / m and the oscillation time is 5 minutes. This vibration frequency and duration are closer to the environment and duration of the transfer paper when the customer smokes, and the test results are more accurate.

[0063] S5: Spread the three test samples after shaking on white cardboard and dry them in the dark;

[0064] S6 fixes the three completely dried test samples flatly on white card paper, and uses white card paper as the background color for the test samples and comparison samples, which has the lowest interference with color detection.

[0065] S7 uses a multi-spectral colorimeter to test the colors of the three test samples and the comparison sample, and records the test values ​​respectively;

[0066] Calculate the average value of the test values ​​of the three test samples;

[0067] The difference between the test average value and the test value of the comparison sample is taken as the test difference, and the saliva color fastness performance of the transfer tipping paper is judged according to the size of the test difference. The larger the test difference, the worse the saliva color fastness performance of the transfer tipping paper.

[0068] like Figure 2 Table 3 shows the visual inspection results of 6 groups of samples.

[0069] According to the above method, Figure 2 The multi-spectral color measurement results of Sample 1, Sample 2, Sample 3, Sample 4, Sample 5, and Sample 6 are respectively obtained and are shown in Table 4 below.

[0070] Table 4 Multispectral color measurement results

[0071]

[0072]

[0073] DE=((ΔL) 2 +(Δa) 2 )+(Δb) 2 ) 1 / 2 , the calculation method is the same as the color difference calculation method in Appendix A of the industry standard YQ / T61-2015; the composition of the simulated saliva is the same as the composition of the saliva simulation liquid in the industry standard YQ / T61-2015.

[0074] As can be seen from Table 3 and Table 4, the greater the detection difference DE of Samples 1 to 6, the poorer the saliva color fastness of the transfer tipping paper.

[0075] In practical applications, when the saliva color fastness performance of the transfer tipping paper is within a certain range, it can be regarded as a qualified / standard-compliant transfer tipping paper. To obtain the standard for the saliva color fastness of the transfer tipping paper to meet the standard, in step S6, 3 completely dried test samples are flatly fixed on white cardboard, and the 3 test samples are visually compared with the comparison sample; select the test samples (see Sample 6 in Table 4) whose visual color differences of the 3 test samples are all near the qualified standard;

[0076] Use a multi-spectral color measuring instrument to detect the colors of the 3 test samples and the comparison sample, and record the detection values respectively;

[0077] Calculate the average value of the detection values of the 3 test samples, and take the difference between the average value and the detection value of the comparison sample as the calibration difference (see the DE average value of 4.30 for Sample 6 in Table 4).

[0078] After obtaining the calibration difference, when detecting other groups of transfer tipping papers, in step S7, based on whether the detection difference is less than the calibration difference, judge whether the saliva color fastness performance of the transfer tipping paper meets the standard.

[0079] The DE average value of Sample 1, 1.89, is less than the DE average value of Sample 6, 4.30, so it is determined that Sample 1 is qualified;

[0080] The DE average value of Sample 2, 6.48, is greater than the DE average value of Sample 6, 4.30, so it is determined that Sample 2 is unqualified;

[0081] The DE average value of Sample 3, 2.88, is less than the DE average value of Sample 6, 4.30, so it is determined that Sample 3 is qualified;

[0082] The DE average value of Sample 4, 2.48, is less than the DE average value of Sample 6, 4.30, so it is determined that Sample 4 is qualified;

[0083] The DE average value of Sample 5, 2.56, is less than the DE average value of Sample 6, 4.30, so it is determined that Sample 5 is qualified.

[0084] To reduce the influence of the detection accuracy of the detection device on the detection results, the number of comparison samples can be more than 1, and the detection values of the comparison samples also use the detection average value of multiple comparison samples. When determining the calibration difference, calculate the average values of the detection values of the comparison samples and the test samples respectively, and take the difference between the average value of the test samples and the average value of the comparison samples as the calibration difference.

[0085] The calibration difference can also be obtained by repeatedly selecting test samples where the visual color difference of three test samples is near the qualified standard, and then averaging the multiple calibration differences obtained to increase accuracy. For example, in Table 4, considering sensory evaluation and multiple detections, the color difference value of 4.5 can be set as the calibration difference. When the color difference is less than 4.5, it can be determined that suction decolorization has not occurred. According to this standard, the average DE value of sample 6 is 4.30, which is less than the calibration difference of 4.5, so it can be determined that sample 6 is qualified.

[0086] In the above two methods, simulated saliva can be prepared in advance, and the effective use period of the simulated saliva is 2 weeks.

Claims

1. A method for detecting the saliva color fastness of transfer tipping paper, characterized in that, it includes the following steps: S1 Prepare specimens. Prepare a piece of transfer tipping paper and cut it into at least two pieces, with at least 1 piece as a comparison sample and the rest as parallel test samples; S2 Pour simulated saliva into a beaker and preheat it to (40±2)°C in a water bath; S3 Immerse the test samples in the preheated simulated saliva and soak them, keeping the beaker in the water bath during the process; S4 Take out the beaker containing the test samples from the water bath and place it on an oscillator for oscillation; S5 Spread the oscillated test samples flat on cardboard and dry them in the dark; S6 Fix the completely dried test samples flat on the cardboard and visually compare them with the comparison samples; S7 Use a multi-spectral color measuring instrument to detect the colors of the test samples and comparison samples with visual color differences, and record the detection values respectively; Calculate the difference between the detection value of the test sample and the detection value of the comparison sample as the detection difference; Judge the saliva color fastness performance of the transfer tipping paper according to the size of the detection difference.

2. The method for detecting the saliva color fastness of transfer tipping paper according to claim 1, characterized in that, in step S3, the test samples are soaked in the preheated simulated saliva for 5 minutes, keeping the beaker in the water bath during the process.

3. The method for detecting the saliva color fastness of transfer tipping paper according to claim 1, characterized in that, in step S4, the vibration frequency of the oscillator is set to 100 r / m and the oscillation duration is 5 minutes.

4. The method for detecting the saliva color fastness of transfer tipping paper according to claim 1, characterized in that, the cardboard is white cardboard, and the white cardboard is used as the background color of the test samples and comparison samples.

5. The method for detecting the saliva color fastness of transfer tipping paper according to claim 1, characterized in that, the test samples include at least one single side.

6. The method for detecting the saliva color fastness of transfer tipping paper according to claim 1, characterized in that, the size of the test samples is 50 mm×30 mm. In step S2, 100 ml of simulated saliva is poured into the beaker to immerse the test samples.

7. The method for detecting the saliva color fastness of transfer tipping paper according to any one of claims 1 to 6, characterized in that, in S7, use a multi-spectral color measuring instrument to detect the colors of the test samples and comparison samples, and record the detection values respectively; calculate the detection average value of the detection values of the test samples; Take the difference between the detection average value and the detection value of the comparison sample as the detection difference, and then judge the saliva color fastness performance of the transfer tipping paper according to the size of the detection difference.

8. The method for detecting the saliva color fastness of transfer tipping paper according to claim 7, characterized in that, before step S7 of the detection method, it further includes: Step S70 Use a multi-spectral color measuring instrument to detect the colors of the test samples and comparison samples without visual color differences, and record the detection values respectively; Calculate the difference between the detection value of the test sample and the detection value of one of the comparison samples or the average value of the detection values of the comparison samples as the calibration difference; In step S7, it is determined whether the saliva color fastness performance of the transfer tipping paper meets the standard by checking whether the detection difference is less than the calibrated difference.

9. The method for detecting the saliva color fastness of the transfer tipping paper according to claim 7, characterized in that the detection average value is: the average value obtained by averaging again the multiple detection average values obtained from the test samples whose visual color differences are all near the qualified standard when multiple test samples are selected.

10. The method for detecting the saliva color fastness of the transfer tipping paper according to claim 8, characterized in that the detection average value is: the average value obtained by averaging again the multiple detection average values obtained from the test samples whose visual color differences are all near the qualified standard when multiple test samples are selected.

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