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.
01 The influence of the fineness of raw cotton fiber on the yarn evenness is as follows:
Fine fineness, low fineness unevenness, yarn cross-section fiber The number is large, the distribution is even, and the yarn evenness is uniform
The fineness is relatively coarse, and the yarn evenness deteriorates significantly when spinning fine yarns
If the fineness is too fine, there will be more appearance defects, difficult processing, and poor evenness of the finished yarn
When the fineness is the same, the yarn number will be thicker and the evenness will be even. The better
02 The influence of defect content in raw cotton on the evenness of yarn is as follows:
There are many defects, which interfere with the normal displacement of the fiber during the drafting process, resulting in uneven yarn quality.
The defects are too large, It is easy to produce yarn defects such as thick places and uneven evenness
The yarn has many neps and impurities, which are wrapped in the inner and outer layers of the yarn, directly affecting the yarn evenness
03 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
04 The influence of fiber maturity in raw cotton on yarn evenness is as follows:
The fiber is mature, soft to the touch, and the yarn has a more even dryness
The maturity coefficient is slightly lower, and when the fineness becomes thinner, it is beneficial to the even yarn dryness
The maturity coefficient is low, there are many short velvet and defects, although the fineness is fine, the finished yarn has poor dryness
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