关键词: 雪尼尔纱, 形态结构参数, 线密度, 饰纱排列密度, 调控机理, 工艺设计

Abstract: The morphological and structural parameters of the chenille yarn include the linear density of the chenille yarn, the arrangement density of the decorative yarn, the diameter of the chenille yarn and the twist of the chenille yarn. In order to explore the regulation mechanism of the chenille yarn′s morphological structure, the linear speed of the former roller, the winding speed of the decorative yarn and the width of the spacer were taken as design parameters. Based on the chenille spinning machine, the spinning technology was studied to change the arrangement density and the width of chenille yarn ornaments, and to realize the control of chenille yarn shape structure. The chenille yarn of different specifications is designed and spun. The results show that by changing the linear speed of the front roller and the winding speed of the decorative yarn, the arrangement density of the decorative yarn can be continuously changed when the same chenille yarn is spun, showing different morphological structures. Among them, when the linear speed of the front roller is changed, the arrangement density ratio of the decorative yarn in the same chenille yarn can reach up to 3.3 times, and when the winding speed of the decorative yarn is changed, the arrangement density ratio of the decorative yarn in the same chenille yarn can reach 4 times. By changing the width of the spacer, chenille yarns of different diameters and widths can be spun. The regulation mechanism of chenille yarn's morphological and structural parameters was studied, and the spinning process of chenille yarn was broadened to improve the market competitiveness of chenille products.

Key words: chenille yarn, morphological parameters, yarn density, arrangement density of decorative yarn, regulation mechanism, technological design