纺纱过程对成纱毛羽影响之研究(一)

分析了毛羽形成的机理，并把成纱毛羽分为加捻毛羽和过程毛羽，进一步分析认为加捻毛羽受加捻三角区大小影响；过程毛羽除受钢领、钢丝圈、导纱钩、隔距板、导纱杆、张力盘、槽筒等纺纱器材影响外，还与回潮率、各种工艺速度、工艺条件有关。详细介绍了前、后纺各种纺纱器材的优选和工艺参数的优化，以及其他控制成纱毛羽的措施。     

棉纺络筒工序的纱线毛羽控制

本文介绍了络筒工艺参数对纱线毛羽的影响，从络筒工艺参数，温湿度控制，操作管理及设备管理几方面探讨了减少纱线毛羽的技术措施。     

前织工序纱线毛羽的测试与改善途径

通过大量的工艺试验和测试，详细分析了络筒、整经和浆纱等工序的工艺参数对纱线毛羽的影响，并探讨了减少纱线毛羽的各种措施。     

降低纱线毛羽的工艺技术探讨

我国国产棉纱毛羽严重，影响棉纱质量，在国际市场上档次低。文章分析了毛羽的影响因素，探讨了从配棉到前纺、细纱、络筒等工序的工艺参数、工艺配置、技术措施和高新技术的应用等降低纱线毛羽的措施。     

减少络纱毛羽的进一步研究

通过大量试验，分析了络筒工序产生毛羽的各种因素，结构表明：络纱毛羽与络筒机型有一定关系，1332M型络筒机毛羽比自动络筒机毛羽少；要减少络纱毛羽，首先要减少管纱毛羽，其次应合理选择张力圈，重量、清纱板隔距、导纱距离、破裂环高度及络筒速度等各项工艺参数。     

基于多视角图像的纱线三维建模及毛羽测量研究

毛羽是评价纱线外观质量的重要参数之一，但现有的二维测量方法无法描述毛羽空间形态，使得测量结果与实际情况存在一定差别。文章介绍了多视角纱线图像采集装置的构建，对采集的多视角图像进行处理并构建纱线三维模型，对毛羽三维点云进行去噪、细化处理，从而实现对毛羽长度的精确测量。实验结果表明，本方法能有效地获取毛羽的三维信息并准确地测量其长度，与USTER^?TESTER5条干测试仪、ZweigleHL400毛羽测试仪及FZ/T 01086—2020《纺织品纱线毛羽测定方法 投影计数法》标准的测试数据进行比较，进一步验证了这一方法的准确性和实用性。     

减少络筒纱毛羽的途径和措施

结合生产实践，分析了络筒机设备状态、操作等因素对络筒纱毛羽的影响，结果表明，络筒毛羽与络筒机机械状态有关。要减少络纱毛羽，除保持机械状态良好外，还要合理选择工艺参数，选择涡流喷嘴和气圈限位器高度及气圈破裂器。     

基于数字化毛羽评价体系的烧毛工艺研究

布面毛羽不仅影响外观,还会导致染整品质问题,很多针织物前处理加工时必须先去除毛羽。采用数字图像处理的织物光洁度评价体系评价布面毛羽,通过研究烧毛机火口距离、火焰强度、运行机速、烧毛方式4个参数对烧毛前后毛羽级别差、手感、胀破强力的影响,确定烧毛工艺参数与毛羽级别差关系,同时讨论不同毛羽级别差和损耗率之间关系。结果表明,毛羽级别差和火口距离、火焰强度、运行机速、烧毛方式存在显著线性相关性,涤纶织物手感、胀破强力主要受烧毛方式和火焰强度影响,毛羽级别差和损耗率之间存在线性关系,利用此模型可以根据成品要求毛羽及坯布原始毛羽评估工艺损耗率。     

浅析细纱与络筒工序毛羽产生的原因及防措

本文详细分析了细纱和络筒工序中一些工艺参数、纺织器材对纱线毛羽的影响，并提出了减少纱线毛羽的一系列有效措施．为纺织行业改善纱线质量，提高织机速度，降低布面纱疵有一定的意义。     

基于BP人工神经网络的纱线毛羽预测研究

研究基于BP人工神经网络的纱线毛羽预测问题.以棉纤维的7项品质指标作为输入参数,以棉纱的毛羽指数H指标作为输出参数,通过使用36组数据分别进行网络模型训练,最终将纱线毛羽指数预测模型的结构选定为7-10-1来进行纱线毛羽的预测,结果表明:BP人工神经网络模型的预测速度和精度较好.     

Analysis of mechanical and dimensional properties of the denim fabrics produced with double-core and core-spun weft yarns with different weft densities

Elastic structures are preferred for improving the elasticity and recovery properties of denim fabrics. With the intention of improving comfort during body movements in denim jeans, 10–35% elasticity is required. In this study, the effect of the composition of double-core (dual-core) and core-spun weft yarns and weft density on the mechanical properties of denim fabrics was investigated. For this purpose, different core materials were used in the production of elastic yarns. The sheath material was cotton for all yarn types. Yarn samples were spun with the same yarn count and twist coefficient. 100% cotton Ne 8/1 Ring slub warp yarns were used as warp yarn while double-core and core-spun yarns were used as weft yarns in weaving. The weaving process was performed with three different weft density values (16, 22, and 28 weft /cm) and the other production parameters were kept constant. Twill 3/1 woven fabrics were treated according to standard denim finishing procedures. After domestic washing processes, mechanical properties of the samples were tested and statistically evaluated.     

Assessing colour differences of viscose fabrics knitted from vortex-, ring- and open-end rotor-spun yarns after abrasion

The colour values of fabric samples that are knitted from vortex-spun (VS), open-end rotor-spun and ring-spun yarns were evaluated after abrasion. We measured the changes of colour properties of each sample, considering spinning system, dyeing concentration and abrasion cycle, which have effects on colour values. The colour values of dyed fabrics knitted from ring spun yarns showed less change after abrasion than that of dyed fabrics knitted from open-end rotor-spun and VS yarns, when the spinning systems were compared. The colour values of dyed fabrics knitted from VS yarns showed more changes after abrasion because of the smooth surface of VS yarns.     

Coating of conductive yarns for electro-textile applications

Conductive yarns are used for integration of sensors and other electronic devices with textile fabrics through weaving, knitting, braiding or embroidery processes. In the lifetime of the textile also several washing cycles might occur. These processes involve rubbing which may lead to displacement of conductive fibres, causing short circuiting between the neighbouring conductive fibres. Also the textile products made with conductive fibres may have to work in the presence of water, where the exposed conductive fibres can get short circuited. In this work, an attempt has been made to protect silver-coated polyamide yarns with polypropylene (PP). This is done through wrapping the PP staple fibres around the silver-coated polyamide yarns through friction spinning and melting the PP sheath fibres in an oven. The influence of twist in the conductive yarns, amount of PP coating and the oven temperature during coating process on the tenacity, electrical insulation in the presence of water and flexibility properties of the coated yarns are studied. The PP coated yarns with plied conductive yarn in the core provide better flexibility but need higher amount of coating to provide complete electrical insulation in the presence of water as compared to those yarns with single conductive yarn in the core.     

影响细纱毛羽因素的试验分析

通过大量试验和测试,分析了纺纱器材,细纱工艺等因素对细纱毛羽的影响,为进一步减少张线毛羽提供了一定的依据。     

Comparison of thermal comfort properties of single jersey fabrics produced by hollow yarns with different hollowness ratio

In this study, the thermal comfort properties of single jersey fabrics produced by conventional and hollow cotton yarns with different hollowness ratio have been investigated and compared. For this purpose, thermal conductivity, thermal resistance, thermal absorptivity, air permeability and water vapour permeability of core spun, hollow and conventional yarn fabrics were measured and evaluated statistically. It was observed that thermal comfort properties of single jersey fabrics were affected by the yarn structure and the fibre distribution within the yarn. The results showed that hollow yarn fabrics had better thermal comfort properties than that of conventional yarn fabrics. In hollow yarns, as the hollowness ratio increases, air permeability and thermal conductivity of single jersey fabrics decrease but thermal resistance, thermal absorptivity and water vapour permeability increase. Statistical analysis also indicated that the differences between properties of hollow yarn fabrics and conventional yarn fabrics were significant. Furthermore, the yarn hollowness ratio significantly affects thermal comfort properties of single jersey fabrics.     

The electromagnetic shielding properties of some conductive knitted fabrics produced on single or double needle bed of a flat knitting machine

In recent years, the use of electrical and electronic devices has grown rapidly. These devices cause electromagnetic interferences, which could threaten human life. In order to solve this problem, intensive research to develop textile surfaces having electromagnetic shielding properties continues. In this paper, we study textile surfaces knitted with conductive copper and stainless steel wires wrapped with acrylic yarns and also core yarns produced by using conductive yarns to test the electromagnetic shielding properties of the fabrics. It was concluded that the knitted structure of the fabrics affected the electromagnetic shielding effectiveness (EMSE). Besides, the fabrics knitted on a double needle bed of the knitting machine with higher amounts of conductive yarns and unit weights could not provide the targeted improvement in the EMSE values with respect to the fabrics produced on a single needle bed of the knitting machine.     

组织结构对防紫外吸湿速干织物性能的影响

为了改善纯棉织物导湿速干性差、吸湿后衣服与皮肤严重的黏着性等问题,以Coolmax纱线和防紫外竹/棉混纺纱线为原料,设计开发4种不同组织结构的防紫外吸湿速干织物,测试4种不同组织结构织物的基本服用性能、吸湿速干性能和防紫外性能。结果表明:这4种组织织物均具有较好的防紫外吸湿速干性能。其中,缎纹组织为综合性能最佳的织物组织。     

花式纱针织物花纹变化的研究

为拓展花式纱线在毛衫中的应用,提高毛衫设计水平,文章分析了花式纱线毛衫在设计和生产中存在的问题以及产生这些问题的原因,指出了花式纱线外观效果和其毛衫产品外观效果存在的差异,重点研究了花式纱与其纬平针织物外观效果间的差异.通过分析花式纱纬平针织物的花纹特点,初步探索出了花式纱纬平针织物花纹的变化规律及主要影响因素,该结论对提高毛衫设计水平有重要意义.     

弹性织物中的应力/应变性能变化

对各种类型的弹力纱进行比较,并根据应用领域阐述其性能和特征。     

纱线形态模拟CAD技术

介绍了目前国外商业化的纱线形态计算机模拟与CAD系统的功能,综述了短纤维纱线、花式纱线仿真的建模参数和实现方法,最后以5×2根单元丝的并捻线为例,阐述了长丝加捻线形态计算机模拟的数学模型、实现方法,并给出了模拟图与实物扫描图的比较。