A study has been carried out to engineer the fabric comfort by modifying the internal yarn structure through spinning process parameters. The yarn packing density is found to be one of most influential factors of yarn structure, which governs the comfort aspect of the textile material. The work reported here mainly deals with the influence of ring frame process parameters, i.e. spindle speed, twist and draft, on mechanics of yarn structure. It is evident that an increase in spindle speed, twist multiplier and draft decreases the yarn diameter and accordingly increases the packing density. The reduction in yarn diameter is found to be maximum with the increase of draft followed by twist multiplier and spindle speed. The yarn packing density also follows the similar trend. The radial packing density of considered yarns is neither uniform across the yarn cross-section nor maximum near the yarn axis. The maximum packing density is noticed at some distance from the yarn axis and it decreases further towards yarn surface. In general, yarns do not possess maximum packing density near yarn axis. It is observed that considered process parameters significantly influence the packing in core, intermediate and surface zone of the yarns.

中文翻译：

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通过改变纱线结构来提高织物舒适度：第一部分–通过纱线横截面切片研究结构变化

已经进行了一项研究，以通过纺纱工艺参数修改内部纱线结构来设计织物的舒适度。发现纱线的堆积密度是影响纱线结构的最重要因素之一，它决定了纺织材料的舒适性。本文报道的工作主要涉及环锭细纱机工艺参数（即锭子速度，捻度和牵伸）对纱线结构力学的影响。明显的是，锭子速度，捻倍数和牵伸率的增加减小了纱线直径并因此增加了堆积密度。发现随着牵伸度的增加，然后是捻倍数和锭子速度的增加，纱线直径的减小最大。纱线的堆积密度也遵循类似的趋势。所考虑的纱线的径向堆积密度在整个纱线横截面上既不均匀也不在纱线轴线附近最大。在距纱线轴线一定距离处会注意到最大堆积密度，并且最大堆积密度朝纱线表面进一步降低。通常，纱线在纱线轴线附近没有最大的堆积密度。观察到，所考虑的工艺参数显着影响纱线在芯，中间和表面区域的堆积。