The influencing factors of raw cotton quality on yarn evenness are mainly reflected in the following four aspects. Grasping the following relationships and matching cotton are the most basic prerequisites for spinning high-quality yarn.
1. The influence of the fineness of raw cotton fiber on the yarn evenness is as follows:
The fineness is fine, the unevenness of the fineness is low, the number of fibers in the cross section of the yarn is large and evenly distributed, and the yarn is evenly dry
The fineness is coarser , when spinning fine yarn, the yarn evenness deteriorates significantly
The fineness is too fine, there are many appearance defects, the process is difficult, and the yarn evenness is poor
When the fineness is the same, the thicker the yarn number, the better the evenness will be.
2. Defects in raw cotton The effect of content on yarn evenness is as follows:
Many defects interfere with the normal displacement of fibers during the drafting process, resulting in uneven yarn evenness
If the defects are too large, it is easy to produce yarn defects such as thick spots and uneven evenness.
The finished yarn has many neps and impurities, which are wrapped inside and outside the yarn sliver. layer, directly affecting the yarn evenness
3. Effect of short fiber content in raw cotton on yarn evenness It is:
There are many short fibers, the fiber movement is difficult to control during the drafting process, and the finished yarn has poor dryness. The shorter the short fibers, the worse the yarn evenness
The length is regular, the short fibers are less, the drafting movement is normal, and the yarn evenness is even
4. The influence of fiber maturity in raw cotton on yarn evenness is as follows:
Fiber Mature, soft to the touch, and even yarn evenness
The maturity coefficient is slightly lower, and when the fineness becomes thinner, it is beneficial to the even yarn evenness
The maturity coefficient is low, there are many short velvet and defects, although the fineness is fine, the finished yarn is poor</p
