Method for identifying material of leather product

A technology for leather products and leather, which is applied in the field of identifying the material of leather products, can solve the problems of poor accuracy of identification results, and achieve the effect of avoiding functional group analysis, simple and convenient operation, and accurate identification of sample preparation and operation.

Inactive Publication Date: 2016-06-22
四川省皮革研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method for leather material identification involves a certain degree of human subjectivity in the judgment, resulting in poor accuracy of the identification results

Method used

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  • Method for identifying material of leather product
  • Method for identifying material of leather product
  • Method for identifying material of leather product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Make an infrared spectrum library of standard materials.

[0045] Collect semi-finished or finished leather products such as pigs, cattle, sheep, and some non-genuine leather samples from different countries and regions such as China, Australia, India, Pakistan, the United States, Spain, Germany, etc., and cut a 1cm×1cm test piece from each sample. Like this, the humidity is 65%, the temperature is 20 ℃ in the environment of 24 hours to adjust the moisture content. Remove the coating of the sample with a razor blade until half of the thickness of the sample is removed to ensure that the test is not interfered by the coating substance. The infrared spectrometer selects the ATR reflection accessory to measure the surface properties of the sample, and sets the number of infrared scans to 16, the resolution to 4, the ordinate is the transmittance, and the scanning wavenumber range is 4000cm -1 ~400cm -1 , choose to automatically deduct H 2 O and CO 2 Background, und...

Embodiment 2

[0054] (1) Make the infrared spectrum library of the standard material. If the infrared spectrum library of the standard material has been established, there is no need to create it repeatedly.

[0055] Collect semi-finished or finished leather products such as pigs, cattle, sheep, and some non-genuine leather samples from different countries and regions such as China, Australia, India, Pakistan, the United States, Spain, Germany, etc., and cut a 1cm×1cm test piece from each sample. Like this, the humidity is 60% and the temperature is 18°C ​​in an environment for 48 hours to adjust the moisture content. Remove the sample coating with a razor blade until one-third of the sample thickness is removed to ensure that the test is not interfered by coating substances. The infrared spectrometer selects the ATR reflection accessory to measure the surface properties of the sample, and sets the number of infrared scans to 14, the resolution to 5, the ordinate is the transmittance, and t...

Embodiment 3

[0061] (1) Make the infrared spectrum library of the standard material. If the infrared spectrum library of the standard material has been established, there is no need to create it repeatedly.

[0062] Collect semi-finished or finished leather products such as pigs, cattle, sheep, and some non-genuine leather samples from different countries and regions such as China, Australia, India, Pakistan, the United States, Spain, Germany, etc., and cut a 1cm×1cm test piece from each sample. Like this, the humidity is 70% and the temperature is 22°C in an environment for 36 hours to adjust the moisture content. Remove the sample coating with a razor blade until two-thirds of the sample thickness is removed to ensure that the test is not interfered by coating substances. The infrared spectrometer selects the ATR reflection accessory to measure the surface properties of the sample, and sets the number of infrared scans to 18, the resolution to 4, the ordinate is the transmittance, and th...

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Abstract

The invention discloses a method for identifying material of a leather product. The method comprises the following steps of S11, selecting a leather sample for making an infrared spectrogram base; S12, putting the leather sample under the standard atmosphere condition, and standing; S13, after standing, removing a coating at the surface of the leather sample, wherein the removal thickness of the coating is equal to 1/3-2/3 of the thickness of the leather sample; S14, scanning and determining the coating-removed leather sample by an infrared spectrograph, so as to obtain the infrared spectrogram of the leather sample; S15, repeating the steps S11 to S14, and making the infrared spectrogram base of a standard material; S21, obtaining the infrared spectrogram base of a to-be-tested leather sample by the steps S11 to S14; S22, comparing the infrared spectrogram of the to-be-tested leather sample and all infrared spectrograms in the infrared spectrogram base of the standard material, and judging the material with highest similarity in the infrared spectrogram base as the material type of the to-be-tested leather sample. The method for identifying the material of the leather product has the advantages that the operation is simple, and the identification is accurate.

Description

technical field [0001] The invention belongs to the technical field of leather identification, and in particular relates to a method for identifying the material of leather products. Background technique [0002] With the development of tanning technology, the appearance, feel, physical structure and performance of artificial leather are getting closer to natural leather. In order to maximize profits, some unscrupulous traders began to pass off low-priced leather as high-grade leather, and even artificial leather as natural leather. Therefore, the phenomenon of shoddy and fake ones in the market has not only damaged the health and interests of consumers , At the same time, it also has a significant impact on the social economy, so the means of identifying leather has always been the focus of consumers and quality inspection departments. [0003] Chinese patent ZL201210288247.9, a rapid identification method for leather materials, the leather material identification method m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3563
CPCG01N21/3563
Inventor 陈磊徐有强冯军芳张双
Owner 四川省皮革研究所
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