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The main difference between the quality standard of colored spun yarn and primary yarn

The main difference between the quality standard of colored spun yarn and primary yarn

Jun 23, 2020

The difference between the quality assessment index and the primary color yarn:

Since the color-spun yarn is different from the primary color yarn, its evaluation index should strive to reflect the overall quality of the product, and pay attention to the physical quality and post-processing performance. In addition to the single yarn breaking strength and coefficient of variation of the primary color yarn assessment, the 100 meters weight variation coefficient and the weight deviation, the uniformity variation coefficient and other quality indicators. According to the characteristics of dyed yarn and finished products, the assessment of indicators such as obvious color knots, kilometer neps, color fastness and color difference, and bobbin yarn end breaks has been added.

Since the finished product of primary color yarn is processed through multiple processes, and the color light of the color-spun yarn is the color light required by the finished product, the color light and color fastness of the color-spun yarn are strictly required.

The difference between the quality index level of dyed yarn and the original color yarn:

Due to the dyeing process of the color spinning yarn, some indicators of the fiber have a certain decrease compared with the original color fiber, especially the varieties with a color cotton ratio of more than 50, the single yarn breaking strength and the evenness index of the yarn are lower than the original color yarn , And other quality indicators have improved to varying degrees.

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