Abstract: Through the analysis and experiment of the cause of left-center-right chromatic aberration of monochromatic yarn-dyed fabric on the air-jet loom, the paper concluded that the left-center-right color difference is mainly caused by the uneven distribution of crimp contraction. When the left-right weft crimp contraction is high, the bending of the weft is large, and the fabric surface mainly presents the fillingwise color. While the center weft crimp contraction is low, the bending of the weft is small, and the fabric surface mainly presents warp-wise color. Through the adjustment of the technological parameters of the weft insertion and looming process, the problem of left-center-right chromatic aberration of monochromatic yarndyed fabric can be solved, so as to ensure the uniformity of the fabric color.

Key words: yarn-dyed fabric; chromatic aberration; pressure