Quantitative test method for foreign fibers in raw cotton

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...

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 H ), the discrepancy between labels and labels is serious, which not only violates the "Cotton Quality Management Regulations", but also causes continuous disputes between buyers and sellers. However, the current cotton standard GB 1103 lacks a reliable and recognized quantitative analysis method for cotton foreign fibers in bales of lint cotton (mainly for sampling method)

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