共查询到20条相似文献,搜索用时 171 毫秒
1.
紧密纺纱机理及特点分析 总被引:1,自引:0,他引:1
介绍了紧密纺纱的成纱机理及其可消除传统环锭纺纱的加捻三角区,从而减少纱线的毛羽、提高纱线强力和弹性、减少纺纱断头,便于后道工序加工等特点,并认为紧密纺纱将成为本世纪纺纱发展的方向。 相似文献
2.
介绍了紧密纺纱的成纱机理及特点。紧密纺纱可消除传统环锭纺纱的加捻三角区,从而减少纱线的毛羽、提高纱线强力和弹性、减少纺纱断头,便于后道工序加工。紧密纺纱将成为本世纪纺纱发展的方向。 相似文献
3.
紧密纺纱成纱机理及特点分析 总被引:2,自引:0,他引:2
介绍了紧密纺纱的成纱机理及特点。紧密纺纱可消除传统环锭纺纱的加捻三角区 ,从而减少纱线的毛羽、提高纱线强力和弹性、减少纺纱断头 ,便于后道工序加工。紧密纺纱将成为本世纪纺纱发展的方向。 相似文献
4.
介绍了集聚纺纱的成纱机理及特点。集聚纺纱可消除传统环锭纺纱的加捻三角区,从而减少纱线的毛羽、提高纱线强力和弹性、减少纺纱断头,便于后道工序加工。集聚纺纱将成为本世纪纺纱发展的方向。 相似文献
5.
紧密纺纱技术与毛羽问题 总被引:19,自引:11,他引:19
针对传统纺纱前钳口处加捻三角区形成毛羽的基本规律,在该钳口出口处采取消除加捻三角区的纺纱方法即紧密纺纱方法,将纱线表面长毛羽在须条离开握持钳口时就贴向纱干,有效降低了纱线毛羽。采用自行研制的紧密纺装置对棉和毛进行纺纱试验,结果表明紧密纺对降低纱线毛羽效果明显。 相似文献
6.
紧密纺纱系统结构特征的比较 总被引:4,自引:0,他引:4
紧密纺纱技术可以缩小甚至消除加捻三角区,减少纱线毛羽,提高纱线强力,提高成纱质量。文章介绍了紧密纺纱技术的原理和目前市场上8家公司推出的紧密纺纱系统,分析了几种具有代表性的紧密纺纱系统,对其结构特征和性能作了比较和分析。 相似文献
7.
8.
9.
紧密纺纱技术及其纺纱系统评述 总被引:14,自引:13,他引:14
利用紧密纺纱技术可以最大限度地减小纺纱三角区,使成纱毛羽减少、单纱强力和断裂伸长率改善、常发性纱疵减少。介绍了紧密纺纱技术的原理、发展及其优越性,着重解析和比较了国际上四种紧密纱纺纱系统的结构和性能;对比分析了传统环锭纺精梳纱与紧密纱的成纱质量情况;对紧密纱的效益作了详细分析。 相似文献
10.
11.
12.
Yarn torque is one of the most important indexes of yarn quality, which is determined on the mechanical state of the constituent fibers and their configuration in the yarn. The fiber tension within a yarn was proposed to be the most influential factor governing the magnitude of yarn torque by Bennett and Postle. Therefore, the research on Sirospun yarn torque is investigated by analyzing the fiber tension at spinning triangle in this paper. Firstly, theoretical models of the fiber tension distributions at primary and final spinning triangles are presented, and corresponding residual torque within a yarn due to the fiber tension is given. The relationships between the yarn torque and the spinning triangle parameters are analyzed theoretically. Secondly, as an application of the proposed method, a modified Sirospun spinning system with an airflow false twisting device which can change spinning triangle parameters are investigated, and the properties of spun yarns produced by the modified system are evaluated and analyzed. It is shown that with the increasing airflow pressures, the Sirospun yarn shows a more and more uniform distribution of tensile and compressive stress within a yarn, and thus the yarn torque decreases correspondingly. 相似文献
13.
14.
To overcome the shortcomings existing in the roller drafting system of air jet spinning, a set of combing roller-drafting system has been introduced to substitute the roller drafting system in air jet spinning. Moreover, a funnel-shaped fibre conveyer, a disc fibre collector and a swirl twister have been designed to accomplish the spinning process, which was named disc swirl spinning. Experimental spinning proves that combing roller drafting device wears little. Its remarkable advantage lies in the high efficiency of drafting. The rotational speed of jet stream in nozzle can be well utilized, which promises a high productivity. The relationship between the drafting process parameters of disc swirl spinning and yarn properties, such as tenacity and peeling-off-resistance, has been investigated and the data suggest that yarn properties keep stable when combing roller speed is 6000–7000 rpm, feeding quantity is 1.695–2 g/min, sliver linear density is 2–2.58 g/m, feeding tension is 0.012 N and the unwinding tension of the core filaments is 0.06 N. Furthermore, the appearance of disc swirl spun yarn is compared with that of air jet spun yarn. The scanning electron microscope (SEM) photos show that yarn structure of disc swirl spun yarn is similar to that of air jet spun yarn. The core is bound by the outer fibres and it is nearly parallel and no twist. However, the outer fibres of disc swirl spun yarn cover yarn body totally, which is different with that of air jet spun yarn. 相似文献
15.
提高摩擦纺纺制低线密度纱的成纱强力,是研究摩擦纺的一个重要课题。利用摩擦纺纺低线密度纱时,对分梳速度、尘笼速度和输出速度做了大量试验与分析。结果表明,纺纱线密度不同,应采用不同的分梳速度,纺低线密度纱时宜比纺中等线密度纱大些。在纤维输送状态一定的情况下,要合理确定摩擦比,以便获得最佳成纱强力值。在提高摩擦纺纱线强力方面,为确定分梳速度、尘笼速度和输出速度提供了依据。 相似文献
16.
17.
根据牦牛绒纤维的特点,合理配棉,优化纺纱工艺,利用棉纺环锭纺设备综合开发各类牦牛绒混纺纱及花式纱线,对棉纺环锭纺设备的加工要点作了详细的分析,并对棉纺和粗梳毛纺设备加工牦牛绒纤维的特点作了对比。 相似文献
18.
在细纱工序生产特细纱时,进行了各种纺纱器材的使用试验,其中包括高精度无机械波罗拉、抗绕低硬度铝衬不处理胶辊、新型下销、高耐磨导纱钩、高精密合金钢领等。通过试验表明合理选用纺纱器材可逐步改善成纱的条干值和毛羽值。 相似文献
19.