Quantitative test method for foreign fibers in raw cotton

A technology of foreign fibers and testing methods, which is applied in textile testing, measuring devices, complex mathematical operations, etc., can solve the problems of unable to truly reflect foreign fibers of raw cotton, inconsistency with actual standards, lack of lint cotton, etc., to solve the quantitative problem of foreign fibers of raw cotton The effect of analysis

Active Publication Date: 2021-07-02
江阴市纤维检验所 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when inspecting the foreign fiber content of raw cotton, inappropriate sampling methods, that is, sampling methods, cannot truly reflect the current situation of foreign fiber in raw cotton; at present, cotton processing enterprises have more common indicators of foreign fiber content with false labels and disorderly labels (generally marked as L, actually as

Method used

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  • Quantitative test method for foreign fibers in raw cotton
  • Quantitative test method for foreign fibers in raw cotton
  • Quantitative test method for foreign fibers in raw cotton

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A method for quantitatively testing raw cotton foreign fibers, specifically comprising the steps of:

[0027] (1) Six batches of Xinjiang machine-picked cotton (186 bags / batch, 227kg / bag) were sampled using different sampling methods to analyze the frequency of foreign fibers, as shown in Table 2.

[0028] Table 2 Occurrence frequency of foreign fibers in different sampling methods of machine-picked cotton in Xinjiang

[0029]

[0030] (2) According to the frequency distribution characteristics of foreign fibers in raw cotton, the discrete variable distribution is selected.

[0031] As can be seen from Table 2, the sampling method (1 bag / 5 bags, 2 samples / 1 bag, 1kg / sample, 76 samples / batch), the average number of foreign fiber samples in 76 samples is 4.8; Method (1 bag / 5 bags, 1 sample / 1 bag, 1kg / sample, 38 samples), the average value of foreign fiber samples in 38 samples is 2.0-2.8; sampling method (1 bag / 10 bags , 1 sample / 1 bag, 2kg / sample, 38 samples), the ...

Embodiment 2

[0048] A method for quantitatively testing raw cotton foreign fibers, specifically comprising the steps of:

[0049] (1) Four batches of hand-picked cotton (120 bags / batch, 217kg / bag) were used to test the frequency of foreign fibers by different sampling methods, as shown in Table 5.

[0050] Table 5 Occurrence frequency of foreign fibers in different sampling methods of local cotton

[0051]

[0052] (2) According to the distribution characteristics of foreign fibers in raw cotton, the discrete variable distribution is selected.

[0053] It can be seen from Table 5 that for local cotton, the sampling method (1 bag / 5 bags, 2 samples / 1 bag, 1kg / sample, 48 samples), the average number of samples containing foreign fibers in the 48 samples is 12.25 ; Sampling method (1 pack / 5 packs, 1 sub-sample / 1 pack, 1kg / sample, 24 sub-samples), the average number of foreign fiber sub-samples in 24 sub-samples is 6.0-6.25; sampling method (1 pack / 10 packs, 1 sample / 1 pack, 2kg / sample, 2...

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Abstract

The invention relates to a quantitative test method for foreign fibers in raw cotton, the method comprises the following steps: selecting proper discrete variable distribution according to the distribution characteristic that the appearance frequency of the foreign fibers obtained by different sampling methods in the raw cotton accords with discrete variables, applying the discrete variable distribution to quantitative test of the foreign fibers in the raw cotton, and calculating the distribution probability of the foreign fibers in the raw cotton, and selecting a proper sampling mode according to the result to obtain the quantitative test method for the foreign fibers in the raw cotton. According to the quantitative test method for the foreign fibers in the raw cotton, different types of raw cotton foreign fiber quantitative testing methods are obtained by introducing discrete variable distribution, the actual distribution situation of foreign fibers in raw cotton is effectively reflected, and the current situation that foreign fibers of domestic cotton exceed the standard is fundamentally improved.

Description

technical field [0001] The invention belongs to the technical field of textile content analysis, and in particular relates to a quantitative test method for foreign fibers of raw cotton. Background technique [0002] Foreign fibers refer to non-cotton fibers and non-natural cotton fibers mixed into cotton, such as chemical fibers, hair, silk, hemp, plastic film, plastic rope, dyed thread (rope, cloth), etc. Foreign fibers in cotton will be cut into shorter and thinner fibers during cotton processing, and become countless fine debris, which is difficult to clean up, and yarn defects are easily formed during spinning, resulting in yarn breakage during weaving, reducing production At the same time, cloth surface defects are formed after bleaching, printing and dyeing, which seriously affect the appearance quality of the cloth surface, and cause quality disputes and economic claims, causing the majority of cotton spinning enterprises to suffer huge economic losses. Textile ente...

Claims

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Application Information

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IPC IPC(8): G01N33/36G06F17/18
CPCG01N33/367G06F17/18
Inventor 陆永良刘澄刘佳尹丽华李云飞
Owner 江阴市纤维检验所
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