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High-speed leather identification method

An identification method and leather technology, applied in the direction of analyzing materials, material analysis by optical means, measuring devices, etc., can solve the problems of high cost and low identification efficiency, and achieve the effects of simple operation, fast identification speed, and improved efficiency.

Active Publication Date: 2012-12-05
GUANGZHOU QUALITY SUPERVISION & TESTING INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has disadvantages such as low identification efficiency and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for quickly identifying leather materials, comprising the following steps:

[0033] (1) Place the leather sample flat under standard atmospheric conditions and let it stand for 24 hours;

[0034] (2) On the sample preparation table, use a holder to display the leather sample after standing still, with the front facing up, use tweezers to hold the absorbent cotton dipped in absolute ethanol and wipe it gently on the surface of the leather sample 8 times. After the water and ethanol volatilized, the leather surface sample was obtained; on the sample preparation table, the two ends of the leather sample after the surface identification were clamped with a holder, so that it was naturally straightened without tension, and then quickly cut with a sample cutting machine. The sample is cut off, and then the sample is placed flat under standard atmospheric conditions for 2 hours, and after the deformation of the incision of the sample is restored, a leather cross-secti...

Embodiment 2

[0039] A rapid identification method for leather materials, the steps are the same as in Example 1, wherein the standing time in step 1 is 72 hours, and when the surface sample is prepared in step 2, use tweezers to hold the absorbent cotton dipped in absolute ethanol on the surface of the leather sample Wipe gently 2 times.

[0040] According to the obtained leather sample surface and cross-sectional microscopic images (see image 3 and Figure 4 ) It can be seen that its surface features are: few pores, thick, nearly round, single existence, relatively uniform and irregular distribution, and rough grain surface. The size of the pores is basically the same, and the number is small, only 1 / 10 to 1 / 5 of that of yellow cow leather. The pores are single and arranged irregularly. The mastoids are tall and dense, and the grooves are deep; the cross-sectional characteristics are: the collagen fiber bundles from the upper layer to the lower layer are relatively uniform from fine t...

Embodiment 3

[0042] A rapid identification method for leather materials, the steps are the same as in Example 1, wherein the standing time in step 1 is 36 hours, and when the surface sample is prepared in step 2, use tweezers to hold the absorbent cotton dipped in absolute ethanol on the surface of the leather sample Wipe gently 6 times.

[0043] According to the obtained leather sample surface and cross-sectional microscopic images (see Figure 5 and Figure 6), it can be seen that its surface features are: the pores on the leather surface are approximately circular, the size is basically the same, concentrated in clusters, distributed irregularly in vertical and horizontal directions or concentrated in clusters, and distributed in random rows, and the leather surface is divided into numerous sizes. Regular convex, papilla-like, pores open in depressions; cross-sectional features: the distribution of grain layer and reticular layer can be clearly seen on the cross-section, the fibers in ...

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PUM

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Abstract

The invention relates to the technical field of leather identification, in particular to a high-speed leather identification method. The method comprises the following steps: lying a leather sample under an atmospheric condition, and standing; allowing the static leather sample to be subjected to surface sampling and / or cross section sampling so as to respectively obtain a leather surface sample and / or a leather cross section sample; placing the leather surface sample and / or leather cross section sample in an objective table of a super-field-depth three-dimensional video microscopy for imaging, and shooting the microscopic image; and identifying the leather according to the leather microscopic characteristics displayed by the microscopic image. The method provided by the invention has the advantages of fastness in sampling, simplicity and convenience in operation, chemical reagent prevention in fixing and dyeing, high identification speed, high efficiency, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of identification of leather materials, in particular to a rapid identification method for leather materials. Background technique [0002] In the leather industry, microscopic techniques are used to observe the appearance and distribution of the epidermis, papillae layer, and reticular layer of the skin plate, as well as hair follicles, sweat glands, fat glands, and muscle tissue in the dermis, collagen fiber bundles, collagen fibers, and elasticity. According to the shape and weaving method of fibers, tanners "make leather by looking at the skin", and researchers "know the skin by looking at pictures". In the middle of the 20th century, foreign countries have already applied optical microscopes to the leather industry, but my country began to gradually use magnifying glasses and microscopes to study the microstructure of leather in the late 20th century, and as an important research method, it is mainly us...

Claims

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Application Information

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IPC IPC(8): G01N21/17
Inventor 孙世彧陈宗良黄晓钢段晓霞李汉彬李石欣邓成亮
Owner GUANGZHOU QUALITY SUPERVISION & TESTING INST
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