浅析影响JCAE-2220乱纤式梳理机梳理效果的因素

主要针对JCAE-2220乱纤式梳理机探讨影响其梳理效果的因素,主要包括:各辊的速度、针布的工作角、隔距的大小等,并指出经JCAE-2220乱纤式梳理机梳理之后的纤维比传统梳理机更能均匀分布纤维网中的纤维,得到较好的纵横向强力比。     

浅析影响JCAE-2220乱纤式梳理机梳理效果的因素

主要针对JCAE-2220乱纤式梳理机探讨影响其梳理效果的因素,主要包括:各辊的速度、针布的工作角、隔距的大小等,并指出经JCAE-2220乱纤式梳理机梳理之后的纤维比传统梳理机更能均匀分布纤维网中的纤维,得到较好的纵横向强力比。     

梳理机用高转移率金属针布齿条研发与应用

为提高非织造布罗拉梳理机金属针布握持、转移纤维能力,避免在梳理过程中出现不抓棉、掉网、飞花、内凝聚辊缠棉的问题,分析研发的3类高转移率金属针布齿条的齿形结构及型号,并在浙江、安徽使用不同梳理机对不同品种纤维进行试纺。结果表明:高转移率金属针布齿条齿形设计基本合理,对纤维的抓取、控制能力增强,梳理和转移效果提高,适用于包卷中道夫、道夫、工作辊和外凝聚辊。     

通用实验用梳理机

英国SDL公司研制出新型通用实验用梳理机。这种新型梳理机适用于多件纤维，包括棉、毛和化纤，各种纤维直径和长度大小均可，这种梳理机既可以用作签定纤维的梳理性能，又可以生产出纤维网垫供取样、试生产、混纺、纤维处理签定、比色操作及其它实验用。对于纤维和纤维加工，纤维销售及其它各类纤维纺纱而言是非常重要的。SDI。公司还研制出另一个装置，它能把流理后的纤维变成毯状织物供进一步进行物理和化学试验，如染色和整理。该装置有加长传输带，表面为塑料，纤维喂火光滑，还配有一对喂入辊和大直径梳理和落纤维纱简。配有三对工…     

高速杂乱式非织造梳理机的基本结构与特性

根据非织造梳理机的发展趋势,重点研究了目前市场上宽门幅、高速高产、杂乱型的非织造梳理机。从梳理机构、杂乱装置、剥取装置及电气控制系统等方面,阐述了非织造专用高速杂乱梳理机的结构及性能要求。研究表明:为适应高速高产以及纤维杂乱的排列效果,非织造梳理机采用了宽幅的双锡林、双道夫;配置了杂乱辊、凝聚辊、高速剥棉系统;选用了优化的针布、先进的自动化电控系统。     

水刺生产线梳理机工作辊转速的设计分析与应用

文章通过设计梳理机工作辊的不同转速,分析其对纤维混合度、梳理成网均匀度、产品布面风格的影响,研究其对产品质量的影响,以及工作辊转速设计在实际生产中的应用情况。试验结果表明：主锡林速度不变,工作辊转速越高,纤维混合效果越好,但分梳能力弱,网面会出现云斑、棉结,影响产品质量。     

精纺梳毛机锡林负荷对纤维断裂的影响

如果精纺梳理机的生产率提高,毛条纤维长度减小,落毛率增加。梳理生产率提高,在锡林和罗拉上的纤维负荷就增加,可是,在梳理机上哪个部分超负荷是最不利的,对此了解甚少。因此,着手研究梳理机各部分的纤维负荷的各自变化,对相应的毛条特性也进行了分析。梳理机任何特定部位实际生产率是速度和纤维负荷的产物。当然,其生产率必须与整台梳理机的生产率相匹配。如果某一部位     

非织造布梳理机及梳理针布浅析

在非织造布生产过程中,梳理机承前启后,对整条生产线的生产和产品质量起到至关重要的作用,它把开清工序的纤维进一步混和均匀、开松并除去粉尘、杂质,将块状纤维梳理成束状,再梳成单纤维状,并经过铺网机交叉成网后,供针刺机加固。双道夫纤网有均匀补偿作用,杂乱辊使纤网     

用静电法形成杂乱分布的非织造纤网

热固结非织造布在梳理系统上进行铺网,纤 维排列方向是造成纤网在机器方向和垂直于机器 方向强力不同的主要原因。现在通过使用凝聚辊 和气流装置可获得纤维杂乱的效果。在梳理机 上,通过增加杂乱辊,使纤维以连续的较慢的表面 速度运行,以便扩大道夫上的凝聚作用,可得到半     

贝卡尔特公司的专利产品SiroLock(R)——一种能有效握持纤维的工作辊及道夫用新型针布

贝卡尔特公司推出一种在非织造和传统纺纱长纤罗拉梳理机上道夫和工作辊用的新型针布SiroLock(R).这种高效针布的独特设计使纤维的握持和转移控制达到了一个全新的水平,从而大大提高了纤网的质量及梳理机的产能.     

15—A STUDY OF NEEDLED FABRICS. PART V: THE APPROACH TO THEORETICAL UNDERSTANDING

Needled fabrics are complicated structures, and an exact analysis of their mechanics is not yet possible. Understanding is approached through three routes. Firstly, the behaviour of a fully bonded web is used to predict the effects of orientation, and to estimate the upper limits of strength. These estimates may be reasonable if the network that actually exists at the breaking point is used in calculations. Needled fabrics can give a fairly high utilization of fibre strength. Secondly, the effects of slippage are discussed qualitatively, by analogy with the behaviour of spun yams. The influences of entanglement, fibre length, fibre fineness, and fibre friction are discussed. Thirdly, a quantitative analysis, with many approximations, of a much-simplified model is made. Despite the unsatisfactory nature of some of the assumptions, the predictions are in general accord with experimental results.     

广纸PM8纸边厚度问题的解决

广纸PM8软压光系统升级改造后,纸边约10mm宽度的纸页相对过厚,再进去70mm左右宽度又相对过薄。通过更改扫描厚度系数、增大边缘压力、热辊辊边增设加热器等措施,有效地解决了纸边厚度不匀问题。     

腈纶预氧化纤维毡的研制

利用在腈纶预氧化纤维中混入一定量丙纶纤维 ,并在纤维网中添加机织物基布 ,通过针刺和热轧工艺开发出高性能腈纶预氧化纤维毡。通过对腈纶预氧化纤维毡性能测试 ,分析了丙纶含量、热轧温度、热轧压力等对产品性能的影响     

我国纺粘针刺非织造布的发展

简单介绍我国的聚酯纺粘针刺生产线,分析了纺粘针刺生产线与短纤维纤网针刺生产线在技术工艺上的不同,比较了纺粘法针刺非织造布和短纤维纤网针刺非织造布的市场,指出了我国聚酯纺粘针刺生产线的发展方向。     

34—WOOL CIGARETTE FILTERS. PART I: A STUDY OF THE PARAMETERS THAT AFFECT FILTER PERFORMANCE

An investigation is described in which cigarette filters were fabricated from combed wool top and two types of adhesive-bonded wool webs. The influence of variables such as fibre arrangement, fibre diameter, pressure drop, and binder content on three selected performance criteria was studied. More effective filtration was achieved by decreasing the fibre diameter and utilizing a random fibre arrangement. Higher pressure drops increased the retention of smoke particles but lowered the collection efficiencies of the fibres. The filter performance was adversely affected by increasing the binder content of the bonded webs. At low or medium pressure drops, filters prepared from a random web were more efficient than conventional cellulose acetate filters. The random web gave firm filters, which retained their firmness during smoking.     

19—A STUDY OF NEEDLED FABRICS. PART VI: THE MEASUREMENT OF PUNCHING FORCE DURING NEEDLING

An account is given of an investigation in which a small needle board was fitted to the compression cage of an Instron Tensile Tester and used to measure the forces developed during the penetration of a web by needles. The punching speeds were much lower than those in a needling machine. The effects of web weight, type of fibre, fibre length and fineness, density, a reinforcing base fabric, and punching speed were studied.     

影响针刺PU合成革基布均匀度的因素分析

非织造布存在表面粗糙、凹凸不平、厚薄不一等弱点,致使最终产品表面产生斑纹,严重影响合成革质量。本文从梳理机输出纤网、铺网机输出纤网层和针刺机针刺三个方面分析了影响非织造基布均匀度的原因。     

聚丙烯纺粘热轧法非织造布质量的内在影响因素分析

通过改变成网及固网的部分工艺,对不同生产条件下生产的产品性能,包括非织造布中的纤维直径进行了测试分析,研究了影响纺粘热轧法非织造布产品质量的内在因素。实验结果表明,在产品面密度不变时,力学性能随计量泵转速的提高而降低,硬挺度、透气性及非织造布中纤维直径随之增加,当泵转速达到一定值时出现断丝现象,产品的强力又开始下降;在泵转速一定时,面密度随轧机速度提高而下降,产品力学性能随之下降,透气性提高;在轧机速度一定时,产品面密度随泵转速提高而增大,力学性能、硬挺度随之增大,透气性下降。研究表明,网帘下的吸风量增加,会造成纤网中纤维变细,产品的力学性能上升,硬挺度与透气性下降;在其他条件不变时,随轧辊中油温的升高,产品的力学性能、硬挺度提高,透气性下降,但温度过高则会破坏纤维内部结构,其产品性能就会下降。     

19—A STUDY OF NEEDLED FABRICS PART I: EXPERIMENTAL METHODS AND PROPERTIES

Methods of producing a fibre web for needle-punching on a laboratory machine are described: a parallel-laid card web was suitable for most purposes, though a cross-laid web was less anisotropic. Methods of operation and testing are described; the effects of specimen shape and size on tensile-test results were studied. The effects of web weight and structure were investigated, and experimental results are given: heavier-weight fabrics show much greater consolidation on needling.     

25—A TECHNIQUE FOR THE MEASUREMENT OF THE PUNCHING FORCE DURING NEEDLE-FELTING

An account is given of the use of a strain-gauge system to measure the force exerted on a single needle during the actual punching operation in needle-felting. The variation of this force with distance along the web, test-needle position in the board, web weight, needle penetration, web movement per loom cycle, and fibre orientation in the web is discussed.

Finally, an attempt is made to isolate the origin of the punching force and to explain relative values in terms of a known needled-fabric structure.