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Method of using USTER index to quantitatively evaluate quality of linen thread and yarn

A quantitative evaluation and yarn quality technology, applied in the inspection of textile materials, textiles and papermaking, textile testing, etc., can solve the problems that have not been studied in depth and have not really reached the level of practical use

Inactive Publication Date: 2009-09-16
ZHEJIANG SCI-TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are studies on the use of USTER to measure flax yarn, it has not been studied in depth, and it has not really reached the level of practical use.

Method used

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  • Method of using USTER index to quantitatively evaluate quality of linen thread and yarn
  • Method of using USTER index to quantitatively evaluate quality of linen thread and yarn
  • Method of using USTER index to quantitatively evaluate quality of linen thread and yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Table 1 is a set of USTER testing indicators and corresponding blackboard scores of flax yarns provided by the Silk Inspection Center of Hangzhou Inspection and Quarantine Bureau. The data in Table 1 are used as the database in the examples. According to the principal component analysis, the comprehensive score and ranking of the principal components of each linen yarn in the database are shown in Table 2. The comprehensive score of the principal component refers to a dimensionless data calculated by the database or the database and the newly measured yarn data system. changes, but does not change the collating sequence for that value. It can be seen from Table 2 that the sorting of the comprehensive scores of the principal components and the sorting of the blackboard scores are negatively correlated, and the linear correlation equation is: y=-11.011x+61.303(R 2 = 0.9762).

[0041] The flax yarn of Example 1 is a 36Nm long-fiber yarn, provided by Zhoushan Golden Eagle...

Embodiment 2

[0043] Example 2 The flax yarn is a 36Nm long-fiber yarn, provided by Harbin Inspection and Quarantine Bureau (Table 3). The USTER measurement data are shown in Table 4, and its measured blackboard score is 30 points. After adding the database to calculate, its principal component comprehensive score is 3.62. According to the calculation, its principal component comprehensive score is sorted at the position where the blackboard score of the database sample is 30 points, which is consistent with the actual blackboard score of Example 2. At this moment, the internal standard equation determined by the database data is: y=-11.019x+61.011 (R 2 =0.9879), the blackboard score calculated by the principal component comprehensive score and the internal standard equation is 21.14, which is basically consistent with the measured blackboard score.

Embodiment 3

[0045] Example 3 The flax yarn is a 24Nm long-fiber yarn, provided by Qiandaohu Merchant Co., Ltd. (Table 3). The USTER measurement data are shown in Table 4, and its measured blackboard score is 70 points. After adding the database to calculate, its principal component comprehensive score is -0.93, and according to the calculation, its principal component comprehensive score sorting is in the position where the database sample blackboard score is 70 points, which is consistent with the actual measured blackboard score of Example 3. Now the internal standard equation determined by the database data is: y=-10.802x+63.654 (R 2 =0.9883), the blackboard score calculated by the principal component comprehensive score and the internal standard equation is 73.72, which is consistent with the measured blackboard score.

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Abstract

The invention discloses a method of using USTER index to quantitatively evaluate quality of linen thread and yarn. The method comprises the steps of: firstly, establishing a linen thread and yarn USTER measuring index and a standard database corresponding to the actual linen thread and yarn blackboard score. Through the principal component analysis, the USTER measuring index of each linen thread and yarn calculates the relative principal component composite scores depending on the whole database; the relative composite scores and the blackboard scores have linear relationship. When a new linen thread and yarn USTER measuring data group enters into the database, the new linen thread and yarn can calculate the relative principal component composite scores, and quantitatively evaluate the blackboard scores of the linen thread and yarn through the internal standard equation, thereby quantitatively evaluating the quality of the linen thread and yarn through the USTER measuring. Through the principal component analysis, the USTER index and the linen thread and yarn blackboard score measured by the linen thread and yarn are quantitatively related such that the USTER measuring of the linen thread and yarn can be used for controlling the quality and evaluating the quality of the linen thread and yarn.

Description

technical field [0001] The invention relates to yarn quality evaluation, in particular to a method for quantitatively evaluating flax yarn quality with USTER index. Background technique [0002] Yarn evenness is an important quality index of yarn, and the quality of yarn evenness directly affects the intrinsic and appearance quality of yarn. At present, the blackboard inspection method and USTER (USTER) evenness tester are generally used for inspection. The former is a method for sensory testing of yarn unevenness, and is one of the inspection items listed as national standards. The latter uses the principle of capacitance detection to test the unevenness of the yarn. The CV value measured in the cotton yarn test has been included in the national standard to evaluate the quality level of the yarn. [0003] Flax fiber is the oldest textile fiber in the world, and the fabrics made from flax fiber are very versatile. According to research, linen fabric has the functions of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06H3/00G01N33/36
Inventor 周文龙郭金董锁拽
Owner ZHEJIANG SCI-TECH UNIV