Influence of process parameters on structural mechanics of air-vortex polyester cotton (65/35) blended yarn has been studied. Box-Behnken three variables design is used to optimize the spindle diameter, nozzle pressure and yarn delivery speed to achieve the required packing density of air vortex yarn. Image processing technique is used to measure the fibre area in different concentric zones. The study confirms that the yarn packing density and radial packing density of yarns are influenced by individual as well as interaction effect of process parameters. The packing density is not found to be maximum near the yarn axis. It is depicted that packing density of core, intermediate and surface zones of the yarn shows an increase with the increase in nozzle pressure, and decrease with the increase in spindle diameter and yarn delivery speed. The packing density of ring-spun yarn is found to be higher than vortex yarns with distinctly higher packing in the core- zone of the yarn.

中文翻译：

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通过工艺变量调节空气涡流纱线的横截面结构

研究了工艺参数对空气涡流涤棉（65/35）混纺纱结构力学的影响。Box-Behnken 三变量设计用于优化锭子直径、喷嘴压力和纱线输送速度，以达到所需的空气涡流纱线包装密度。图像处理技术用于测量不同同心区的纤维面积。研究证实，纱线的纱线堆积密度和径向堆积密度受工艺参数的个体影响和相互作用影响。没有发现填充密度在纱线轴附近最大。可以看出，纱线的芯区、中间区和表层的填充密度随着喷嘴压力的增加而增加，随着锭子直径和纱线输送速度的增加而减少。