缆型纺纱线的捻度分析

根据缆型纺先分束后汇聚的成纱机理及理论力学原理分三个部分（交汇点、交汇点以上的纤维束部分以及交汇点以下的纱线部分）对缆型纺纱线的捻度进行探讨。分析了纺纱时各部分捻度产生及分布的情况，得出缆型纺线中纤维束的捻度与纱线捻度及纤维束本身的状态相关，纤维束的捻度不是一个定值等结论。提出了纤维束和纱线的捻度之比的规律，探讨了纤维束捻度与纱线性能相关性，认为只有当缆型纺纱线捻度达到临界捻度时纱线综合指标最佳。     

利用缆型纺纱技术生产细化羊毛纱

文章介绍了一种新的纺纱技术--缆型纺,阐述了其纺纱原理和装置改造,探讨了生产缆型纱的工艺要点.在选择原料及捻度时,缆型纱的生产工艺与传统的纺纱工艺有所不同.比较了采用缆型纺技术纺出来的纱和传统单纱的质量指标.这种新型纺纱方法可以显著改变环锭纺纱线的结构,不仅使纱线本身具有较少的毛羽,较好的耐磨性能,而且提高了纱线的织造效率,为生产单经单纬产品开辟了一条新的途径.     

缆型纺纱线的捻度分布

根据缆型纺先分束后汇聚的成纱机制及理论力学原理分3个部分（交汇点、交汇点以上的纤维束和交汇点以下的纱线部分）对缆型纺纱线的捻度进行探讨。分析了纱线各部分捻度产生及分布的情况,得出了缆型纺纱线纤维束部分捻度与纱线捻度及纤维束本身的状态相关,纤维束上的捻度不是一个定值等结论。提出纤维束和纱线捻度之比的规律,探讨了纤维束捻度与纱线性能的相关性,认为只有当缆型纺纱线捻度达到临界捻度时纱线综合指标最佳。     

缆型纺技术在精毛纺产品中的应用与研究

1缆型纺纺纱机理 1．1缆型纺纺纱是一种新型的纺纱技术 缆型纺纺纱是粗纱经牵仲后当纤维须条在出细纱机前箝口时．被缆型纺专用装置中的一个分割轮分割成两股以上的纤维束，这些纤维束在纺纱张力的作用下进入分割轮的分割槽内并在纺纱力的作用下同绕自身的捻心回转，从而具有一定的捻度，这些带有一定捻度的纤维束随着纺纱的卷绕运动向下移动脱离分割轮后。     

棉纺设备纺半精梳羊毛纱的探讨

使用棉纺设备纺半精梳羊毛纱是当今纺纱技术进步和工艺创新的发展趋势。文中介绍了羊毛棉纺工艺常用的细羊毛、毛条和细化毛三种原料；分析了羊毛纺纱的可纺支数、长度限制及可纺性；分工艺研讨了羊毛在棉纺设备上的纺纱工艺，并叙述了当前棉纺设备上纺制的半精梳羊毛混纺纱主要产品及其特点。     

缆型包芯纱的成纱机理和性能分析

为了研究缆型包芯纱的成纱特点和性能,对普通环锭细纱机进行改造,加装一套芯纱的喂入装置和须条分割辊.然后,在改进的细纱机上纺制了3种不同细度和3种不同捻系数的缆型包芯纱,芯纱为涤纶长丝,外包棉纤维;同时在相同的纺纱工艺条件下,纺制相同细度和捻系数的普通包芯纱.测试缆型包芯纱和普通包芯纱的纱线强力、毛羽和条干均匀度.结果表明:缆型包芯纱在毛羽指标上有明显优势,3 mm以上的毛羽数量仅占到普通包芯纱的30%～46%,而断裂强力和条干均匀度均稍低于普通包芯纱.     

缆型包芯纱分割辊工艺参数的优化

本文研究了纺制缆型纺包芯纱的重要部件之一分割辊的结构参数设计,包括材质、棱厚、槽宽、槽深和直径等。通过纺纱性能比较,选择聚甲醛为分割辊材料;正交试验优化后的分割辊结构尺寸为：棱厚0.2mm,槽径13mm,浅槽为0.3mm,深槽位0.4mm,槽宽0.5mm。在相同的纺纱工艺条件下,纺制相同细度和捻系数的涤/棉缆型包芯纱及普通包芯纱。成纱性能测试表明：缆型包芯纱的毛羽与普通包芯纱相比,减少44%,断裂强度与条干均匀度差异不大;由纱线切片说明,缆型包芯纱包芯效果更好,芯纱位置相对稳定。     

缆型纺纱技术

缆型纺是一种新型纺纱技术，本文介绍了缆型纺技术原理，工艺流程和在毛纺棉纺中的应用。     

缆型纺纱技术在苎麻纺纱中的试应用

介绍了缆型纺技术的基本机理、缆型纺纱线的结构与纱线特点。分束使纤维偏离捻心,分束加捻产生毛羽的裹缠,过渡段使纤维之间的抱合力增加,分束使纤维两次加捻。纱线内部既有成束状聚合的纤维,也有单独存在的纤维。纤维束与纤维束,纤维束与非纤维束纤维之间相互纠缠,而且,随着纤维内外层的转移,致使缆型纺纱线的内部结构相当复杂。结构决定了纱线的毛羽少,耐摩擦性能高的特点。     

Solospun纺纱方法在棉纺中的应用探索

探索毛纺Solospun纺纱技术在棉纺环锭纺上的应用.对纯棉品种Solospun纱与传统环锭纱在不同纱号、捻度、钢丝圈等条件下进行了大量对比试验,结果表明:Solospun纺纱方法用于棉纺设备上是基本可行的.棉纺Solospun纱的毛羽比传统环锭纱有明显减少,纱的条干接近传统环锭纱,纱的强力总体稍逊于环锭纱.在纺中粗号纱时Solospun纺展现了其优越的性能,毛羽明显减少.虽然条干、强力有所降低但仍然可以达到要求;但Solospun技术在纺细号纱时适纺性较差.作为一种新型的纺纱技术仍有一些不成熟的地方需要加以改进.     

涡流纺纱线性能分析

研究涡流纺成纱性能.采用相同熟条纺制了CJ 20 tex涡流纺纱线、传统环锭纺纱线、紧密纺纱线和喷气纺纱线,通过分析对比了这4种纱的成纱结构、毛羽、耐磨性及强伸性能,认为涡流纱成纱强力虽低于紧密纺纱线和传统环锭纱,但强力不匀较好,毛羽大幅度降低,耐磨性能很好,抗起毛起球性能好.     

粗纱间距对差速复合纺纱线性能的影响研究

研究粗纱间距对差速复合纺纱线性能的影响规律.测试了不同粗纱间距纺出的差速复合纱的断裂强力、断裂伸长率、耐磨性能、毛羽H值、毛羽指数、毛羽H值标准差.结果表明:粗纱间距对纱线的断裂强力、断裂伸长率、耐磨性和毛羽指数的影响较大,对毛羽H值、毛羽H值标准差、纱线粗细节和棉结影响较小.     

The effect of air-jet nozzle structural parameters on new cotton rotor-jet spun yarn properties

In this paper, a hybrid spinning system the so-called “rotor-jet spinning method” which utilizes the air-jet nozzle in rotor spinning process is presented. Thus, air-jet nozzles with different structures of 90S, 90Z, 60Z, and 30Z (the values of 90, 60, and 30 are orifice angles and S and Z are air rotational directions) were designed and constructed and then mounted between the take-up nozzle position and doffing tube in a rotor spinning machine. The air-jet pressure was changed at 0.2, 0.5, 0.8, 1, 1.2 and 1.5 bar values. The physical properties of cotton rotor-jet spun yarns with yarn count 20 Tex and nominal yarn twist of 938 TPM were investigated and compared with that of normal rotor-spun yarn. The experimental results indicated that by utilizing a 90Z air-jet nozzle at 1 bar air pressure, the highest yarn tensile strength, abrasion resistance, and twist, and lowest elongation are obtained compared with those of normal rotor as well as rotor-jet spun yarns with 30Z, 60Z, and 90S air-jet nozzle types. However, the rotor-jet spun yarn irregularity produced with 90Z air-jet nozzle is almost identical to normal rotor-spun yarn. It is also shown that the rotor-jet spun yarn hairiness properties which were produced with a 90Z air-jet nozzle at air pressure values of 0.2, 0.5 and 1 bar is almost similar to normal rotor-spun yarn while the lowest yarn hairiness is achieved at air pressure value of 0.8 bar. The experimental results of this paper suggest that the newly developed rotor-jet spun yarn is superior to normal rotor-spun yarn from the point of view of yarn tensile, abrasion resistance, twist, and partially hairiness properties.

     

毛羽指数和捻度对棉纱磨损性能的影响

研究棉纱的毛羽指数和捻度对其磨损性能的影响.采用CTT纱线性能测试仪,模拟了棉纱在高速运行状态下与机件的磨损,并测试了不同线密度、不同毛羽指数和不同捻度的棉纱磨损性能.通过回归分析,发现棉纱在相同线密度条件下,其磨损性能与纱线毛羽指数和捻度有显著的线性关系,且毛羽指数对棉纱磨损性能的影响大于捻度对棉纱磨损性能的影响.     

Effects of fiber types and blend ratios on Murata Vortex yarn properties

Murata Vortex spinning (MVS) system is one of the unconventional systems for yarn manufacturing. It is suitable for spinning of 100% cotton fibers, synthetic fibers, and cotton/synthetic fiber blends which are 1 inch or more in length. The production ranges are between Ne 15-60. Vortex yarn and fabrics have low hairiness, clear appearance, high resistance to pilling and abrasion. In this study, the vortex yarns with Ne 30 are produced in different blend ratios in Murata Vortex Spinner using carded cotton, viscose, modal, silver-added polyester (Flexsil-D2?), polyester, and nylon 6.6 fibers. Vortex spun yarns are tested to determine the yarn properties which are diameter, density, roundness (shape), unevenness, imperfection, Uster hairiness (H), Zweigle hairiness, tenacity, and elongation. The study reveals that the fiber type has quite significant effects on yarn properties. In terms of structural properties, cotton is the most negative fiber while regenerated cellulosic fibers are the most positive. As modal, nylon and polyester fiber increase yarn strength, nylon and viscose fiber increase breaking elongation. Viscose and modal reduce unevenness, imperfection and hairiness while polyester and nylon exhibit more negative effect on these properties.     

新型缆型纺纱技术及其应用前景

介绍了新型缆型纺纱技术及原理。用该方法加工的纱线质量优于相同纱支的传统纱线。该纱线强力大、耐磨、毛羽少,能提高单纱织造的效率,为开发高支轻薄化的毛纺产品创造了有利的条件。     

紧密纺纱技术与毛羽问题

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。     

赛络纺包芯纱工艺试验与成纱结构分析

介绍了利用赛络纺纱技术纺制棉氨包芯纱的原理、装置与工艺以及生产中存在的问题和采取的技术措施;将赛络纺棉氨包芯纱的成纱质量和成纱结构与环锭纺普通棉氨包芯纱进行了对比分析,结果表明,赛络纺棉氨包芯纱强伸性好、毛羽少、结构紧密、包覆效果好.     

Investigation on production,analytical models,and characteristics of monofilaments/staple fibers composite yarn

This study aims to develop a composite yarn comprising monofilaments/staple fibers with distinctive structures and performance. A modified ring spinning system was proposed for producing the composite yarn with three monofilaments and staple fibers. The spinning mechanism was analytically modeled, and the structures of composite yarn were studied by scanning electron microscopy and optical microscopy. The characteristics of polyester monofilaments/cotton composite yarns and the conventional cotton yarns were compared. Analytical and experimental results showed that three monofilaments were distributed around the yarn center forming a 3D spiral, and the staple fibers interlaced inside and wrapped outside of the composite yarn. Experimental results showed that the composite yarn had better tensile properties, less hairiness, and stronger abrasion resistance. As a result, the composite yarn exhibited a remarkable improvement over the conventional yarn, which could be a valuable proposition for specific purposes, such as offering fabrics with shape preservation based on good yarn’s rigidity, and even electromagnetic shielding effectiveness with metal monofilaments in yarns.     

转杯纺复合纱与sirofil复合纱的性能对比分析

纺纱方式的不同使得纱线的结构和性能也不同。通过将转杯轴中心开孔,借助转杯负压的作用引入长丝的方法纺制转杯纺复合纱;通过在传统环锭细纱机上加装1个长丝喂入装置的方法纺制sirofil复合纱。测试分析这2种复合纱在相同规格和纺纱条件下其纵向形态、起毛性、毛羽、纱线表面纤维抽拔力和强力等相关性能。研究结果表明,转杯纺复合纱表面光洁,毛羽少,不易起毛起球,耐磨性能好,其强力稍低于sirofil复合纱。