牵伸倍数

集聚区牵伸倍数对紧密纱质量的影响

Influences of Nesting Zone Draft Multiple on Compact Yarn Quality

结果表明：集聚区牵伸倍数对成纱质量有影响，随着集聚区牵伸倍数增大，紧密纱毛羽增多；

The result shows that nesting zone draft multiple has influences in yarn quality , hairiness of compact yarn is increased with the increase of nesting zone draft multiple .

采用声速仪及X射线衍射仪对不同牵伸倍数和不同预氧化程度的PAN纤维进行取向度和预氧化程度的测试，并将其结果进行对比。

PAN fibers with different drawing ratio and different preoxidation degree were investigated by means of sound velocimeter and X-ray diffraction meter .

纺丝过程中牵伸倍数、牵伸温度和纺丝所用聚合物的特性粘度因素对PGA纤维的降解性能有着重要的影响。

Drawing multiple , drawing temperature and inherent viscosity of polymer had the influence on the performance of PGA fiber during degradation .

拉伸力-牵伸倍数曲线和牵伸力-牵伸倍数曲线都可以用Freundlich方程进行拟合，它们有着相似的变化规律，这也是以拉伸模拟的牵伸的基础。

The curve of tensile-draft ratio and the curve of drafting force-draft ratio could both be fitted using Freundlich equation , the similar trend changing with draft ratio is based on the theory that uses tensile strength to simulate drafting force .

BS368型条并卷机是高效的精梳准备设备，操作简单，自动化程度高，棉条合并数、牵伸倍数分配合理。

Model BS368 Lap Draw Frame is a high efficient preparation machine for Comber , easy operation , high automation and reasonable doubling of slivers and drafting ratio .

氨纶丝预牵伸倍数对弹力织物性能的影响

Effect of polyurethane filament draft ratio on elastic fabric performance

牵伸倍数对烟用聚丙烯丝束性能的影响

Effect of Draw-ratio on the Properties of Polypropylene Tow for Cigarette Filter

后区牵伸倍数对紧密纺高支棉纱成纱质量的影响

The Effect of Drafting Ratio at Back Zone on Yarn Quality in Compact Spinning

论述了不同牵伸倍数的赛络纺成纱机理。

This paper presented the spinning mechanism of siro-spun based on different drafting multipliers .

并条机总牵伸倍数高。

High total draft up to draw frame .

细纱牵伸倍数太高。

Too high a draft in ring frame .

后区牵伸倍数对细纱前区压力棒牵伸的影响

Influence of Back Zone Drafting Multiple on Pressure Bar Drafting in Spinning Front Zone

文中还导出氨纶丝含量与预牵伸倍数间的关系式。

In this paper , the relation of spandex content and pre drafting ratio is induced to .

实验结果表明，预牵伸倍数应根据氨纶丝规格不同而改变，旦数越大，氨纶丝预牵伸倍数越大；

The results showed that the pre-draft times should be changed with the specifications of the spandex .

确定了干燥温度、纺丝温度和速度、牵伸倍数等主要工艺参数。

Spinning technological parameters were determined such as drying temperature , spinning temperature and rate , draw ratio .

综合分析，纺CJ14.6tex紧密纱，集聚区牵伸倍数以1.05倍为宜。

In summarize , 1.05 is the suitable nesting zone draft multiple when spinning CJ 14.6 tex compact yarn .

并通过正交试验对后区牵伸倍数、罗拉中心距和粗纱捻系数进行了优选。

Through orthogonal experiment , parameter of back zone draft multiple , roller center distance and roving twist factor are selected .

转杯纺棉氨复合纱工艺及其成纱性能研究&氨纶丝牵伸倍数对成纱性能的影响

Characteristics of Cotton / Spandex Composite Yarns Spun by Rotor & Effects of Spandex Draft Ratio on Characteristics of Composite Yarns

经纱线外观和性能的测试分析，表明氨纶丝牵伸倍数对转杯纺棉氨复合纱的外观和性能有一定的影响。

The results showed that spandex draft ratio had great influence on surface appearance and properties of cotton / spandex composite yarns .

结论是，后区牵伸倍数为1.21时，CJM7.3tex纱质量最好。

It draws the conclusion that when the drafting ratio at back zone is 1.21 , the yarn quality is the best .

首先，研究了捻系数、长丝牵伸倍数等工艺参数对转杯纺棉/氨弹力复合纱纱线性能的影响。

First , the effect of the twist multiplier and the draw ratio of filament on the properties of rotor spun composite yarn is analyzed .

分析了转杯速度、牵伸倍数、捻系数对弹性转杯纱性能的影响，并通过正交试验对工艺参数进行了优化。

Three technical parameters , the rotor speed , twist modulus and combing roller speed have great influence on the yarn quality of rotor spinning .

不同牵伸倍数聚丙烯腈原丝的结构表征及其力学性能研究在纺纱预备阶段和纺纱设备使用大的牵伸。

Characterization on the Structure and Mechanical Properties of Polyacrylonitrile Precursors on Different Draw Stages ; Use of excessive draft in spinning preparatory and ring frames .

进行了一系列试验来研究氨纶的牵伸倍数和纱线捻系数对包芯纱拉伸性能和弹性的影响。

A series of experiments were carried out to study the influence of elastane drafting ratio and yarn twist factor on tensile properties and elasticity of core-spun yarns .

拉断机的热牵伸倍数、电热板温度、制条速度和出条卷曲压力也对成品毛条汽蒸收缩率有重要影响。

The process parameters including heat-plate temperature , heat-plate draw ratio of stretcher , speed of stretcher and crimper pressure of stretcher have important effect on bulky top shrinkage .

为了顺利生产亚麻弹力织物，在加工弹力纱时，要对捻线机进行改造，重点控制好捻度和氨纶预牵伸倍数等工艺参数。

To produce flax elastic fabric , the twister should be innovated in the production , and processing parameters such as twist , polyurethane pre-draft multiple should be controlled .

生产较低缩率的高缩腈纶产品，可以不需改变第二单体含量，而将纺丝定型压力及二牵伸倍数适当提高，就可以生产出缩率合格的腈纶产品；

There is no need to change the percentage of VA in polymer as for producing lower shrinkage fiber , while the only changes are steaming pressure and stretch ratio .

分析结果表明，在选择参数范围内，转杯纺棉/氨弹力复合纱纱线断裂强力与捻系数呈二次关系，而与长丝牵伸倍数呈线性关系；

It is found that the relationship between the yarn tenacity and the twist multiplier is quadratic , while the relationship between the yarn tenacity and the draw ratio of filament is linear .

文章介绍了在纺制毛粗纺氨纶包芯纱时，氨纶百分含量、预牵伸倍数和捻度对包芯纱强伸性和弹性的影响规律；

The influence of percentage of spandex , drafting ratio of spandex and twist of core spun yarn on tensile properties and elasticity of spandex core spun yarns on woolen spinning system were studied .