Method for performing color-difference evaluation on cigarette outside wrapping paper

A technology for outer wrapping paper and coloring, which is applied in the direction of material analysis, measuring devices, and instruments through optical means, and can solve the problems of being difficult to objectively and accurately evaluate the color difference of cigarette packaging materials and the narrow adjustable range of the color difference meter. To achieve the effect of guaranteeing the appearance quality, accurate qualitative effect, and overcoming error problems

Inactive Publication Date: 2015-07-08
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because different individuals have different perceptions of color difference, and the adjustable range of the color difference meter is narrow, it is often difficult for these two methods to objectively and accurately evaluate the color difference of cigarette packaging materials
How to improve the accuracy of the color difference evaluation of cigarette outer wrapping paper has become an urgent technical problem in the field of cigarette quality control, but there is no good solution in the prior art

Method used

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  • Method for performing color-difference evaluation on cigarette outside wrapping paper
  • Method for performing color-difference evaluation on cigarette outside wrapping paper
  • Method for performing color-difference evaluation on cigarette outside wrapping paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Evaluation of color difference of cigarette outer wrapping paper with the same raw materials, process conditions and brands:

[0018] a. Preheat the Nicolet ANTARIS Near-IR Analyzer at room temperature. The preheating time is about 2 hours. (Instruments, equipment and software are all products of Thermo Nicolet, USA)

[0019] b. According to the relevant regulations of "GB / T 12655-2007 Cigarette Paper", two pieces of label paper produced continuously in the same batch of Yunyan (soft treasures) were cut into long strips of appropriate size (22.5cm×15cm), and used art scissors Each label paper prepared above was cut into disk-shaped samples A and B with a diameter of about 15 cm.

[0020] c. Spread the colored side of samples A and B on the bottom of the sample cup, place the sample cup in the spectrum collection area, and set the instrument conditions on the software interface: Spectrum scanning range: 4000cm -1 ~10000cm -1 ;Resolution: 8.0cm -1 ; Number of scans: 9...

Embodiment 2

[0025] Repeat embodiment 1, there are following differences: different raw materials, process conditions, the color difference evaluation of the cigarette wrapping paper of the same brand:

[0026] For the experimental samples, Yunyan (Ruan Ruyi) brand paper with different process conditions and different raw materials was selected, and samples C and D were obtained according to the cutting method in Example 1.

[0027] b Select sample C as a standard to establish a model, and calculate the similarity between another sample D and its color, as the basis for judging the color difference of different samples. See Table 2 for specific data. It can be seen from Table 2 that the average similarity of samples C and D measured three times is 42.36%, indicating that there is a significant difference in the color of the two samples, and the appearance color difference is obvious, which is consistent with the visual judgment result, while the judgment result of the colorimeter is that t...

Embodiment 3

[0031] Repeat embodiment 1, have following difference: the cigarette wrapping paper color difference evaluation of different raw materials, process conditions, brand:

[0032] For the experimental samples, Yunyan (Hongmei) and Yunyan (Dazhongjiu) trademark papers with different process conditions and different raw materials were selected, and samples E and F were obtained according to the cutting method in Example 1.

[0033] b Select sample E as a standard to establish a model, and calculate the similarity between another sample F and its color, as the basis for judging the color difference of different samples. See Table 3 for specific data. It can be seen from Table 3 that the average similarity of the three measurements of samples E and F is 46.71%, indicating that there is a significant difference in the appearance color of the two samples, and the appearance color difference is obvious, which is consistent with the visual judgment result, while the judgment result of the...

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Abstract

The invention discloses a method for performing color-difference evaluation on cigarette outside wrapping paper. The method comprises the following steps: cutting wrapping paper needing to be evaluated into round pieces, downwards tiling one side with colors to the bottom of a sample cup, arranging the sample cup in a spectral acquisition area of a Nicolet ANTARIS Near-IR Analyzer near-infrared spectrometer, and processing the acquired spectrum by using TQ Analyst 9.0 data processing software; and calculating the color similarity of two samples, when the similarity n is more than or equal to 95 percent, judging that color difference is avoided; when n is more than or equal to 90 percent and less than 95 percent, judging that slight color difference exists; and when n is less than 90 percent, judging that obvious color difference exists. The method disclosed by the invention is simple and feasible, the calculation result is accurate, and the error problem during slight color difference analysis exceeding the calculation range of the conventional colorimeter tolerance formula can be effectively solved. The method is good in effect when being applied to outside wrapping paper color difference analysis with gradually change colors and high color change rate.

Description

technical field [0001] The invention belongs to the field of appearance quality control of cigarette packaging materials, and in particular relates to a method for evaluating and analyzing the color difference degree of cigarette outer wrapping paper by using near-infrared spectrum analysis technology combined with a Gram-Schmidt orthogonalization method. Background technique [0002] Cigarette outer packaging paper mainly includes cigarette rods, box label (packaging) paper and packet label paper, etc. The appearance quality directly bears the external image and anti-counterfeiting function of cigarette products, and determines the first impression of cigarette consumers on cigarette products. And to a certain extent, it affects consumers' choice of cigarette products. Therefore, the qualified cigarette products produced by regular manufacturers all require the quality of their outer packaging to be consistent. [0003] Cigarette wrapping paper color difference refers to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359G01N21/3563
Inventor 秦云华李超张承明张翼鹏许永邹楠吴亿勤叶灵蒋次清
Owner CHINA TOBACCO YUNNAN IND
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