2024年6月15日发(作者：)

Lesson Fifteen：Finisher Drawing, Roving and Spinning(并条、粗纱和细纱)

Finisher Drawing

Slivers from either the carding unit or the combing unit, depending on the

ultimate yarn desired, are processed through the finisher–drawing. This is the

process by which fibers of different types can be blended together to form

blended yarns. Eight slivers are drawn together to produce the drawn sliver. If a

50/50 polyester / cotton blend is to be made, there will be four slivers of polyester

fiber and four of cotton; if a 65/35 blend is ordered, there will be five polyester

slivers and three cotton. As with the breaker drawing, rollers moving at different

speeds smooth and combine the slivers and pull them into a thin layer then into

the drawn sliver.

并条

从梳棉机或精梳机下来的棉条，根据对纱线的最终要求，进一步在并条机上加工。在

此工序，不同类型的原料进行混合，以便生产混纺纱线。在末道并条机上，八根棉条并合

在一起被牵伸成熟条。如果要生产50/50涤棉混纺纱，应该由四根涤纶条子与四根棉条并

合。如果要生产将条子并合、理顺并牵伸成薄层，然后并合成熟条。

The finisher–drawing operation is usually repeated. The second time, however,

eight slivers from the first finisher – drawing step are subjected to the same

operation. The drawn sliver is about the same size as, or perhaps slightly smaller

than, the card or comb slivers. As yet no twist has been imparted into the fiber

assemblage(聚集), although the delivery of the sliver to the cans tends to twist the

sliver slightly.

并条一般要进行两次。在进行第二次并条时，第一个并条机生产的八根棉条被送到第

二个并条机上进行同样的梳理。生产的熟条与粗梳条或精梳条直径相同或稍细。到目前为

止尚未给条子加过捻，但在将条子导入条筒时有弱捻加入。

Roving

Slivers from the finisher drawing are taken to the roving frame, where each

sliver will be attenuated until it measures approximately one–eighth of its original

diameter. The drawn sliver is fed between sets of rollers each of which rotates

faster than the one behind it. The front rollers rotate about ten times faster than

the back set of rollers. This pulls the fibers out, reduces the diameter to the

strand(股), and further parallelizes the fibers. A slight amount of twist is imparted

to give strength. The strand, called roving, is laid onto a bobbin.

粗纱

从末道并条出来的熟条直接供给粗纱机。在粗纱机上，棉条被拉细至约为原来直径的

1/8。熟条从罗拉之间喂入。沿条子的前进方向，罗拉的转速逐渐提高。罗拉的转速为上一

对罗拉的10倍，这样就对条子产生了牵伸作用，从而降低其直径，并进一步使纤维平行

排列。条子上加上了弱捻以便使其具有一定的强度，形成的纱条称为粗纱，被卷绕到筒管

上。