The main differences between the quality standards of colored yarns and natural yarns

Update:20-03-2020

Summary:

The difference between quality assessment index and nat […]

The difference between quality assessment index and natural yarn
Since colored spinning yarns are different from natural yarns, their assessment indicators should strive to reflect the full picture of product quality, focusing on physical quality and post-processing performance. In addition to the quality indicators such as the breaking strength and coefficient of variation of the single yarn, the coefficient of variation of the weight of 100 meters and the weight deviation, and the coefficient of variation of the uniformity of the yarn, according to the characteristics of the colored yarn and the finished product, the obvious color knot , Kilometer neps, color fastness and color difference, and bobbin breakage.
Since the finished product of the natural yarn has to undergo multiple processes, and the colored light of the colored spinning yarn is the colored light required by the finished product, the colored light and color fastness of the colored spinning yarn are strictly required.
The difference between the quality index of dyed yarn and natural yarn
Due to the dyeing process of the fibers of the color-spun yarn, some indicators of the fiber are lower than those of the natural fiber, especially for the varieties with a color cotton ratio of more than 50%. The single yarn break strength and evenness indicators are better than the natural yarn. Decreased, while other quality indicators improved to varying degrees.

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