In the process of cotton spinning, people are most worried about the occurrence of neps, which will greatly directly affect the quality of the woven fabric. Therefore, neps are more concerned in the process of spinning, but in order to eliminate neps, we must understand the possible causes of neps, so as to prevent them, Let's talk about it.
The causes of neps are as follows
1. Raw materials.
If there are impurities and defects in the raw materials, they may cause neps, such as neps formed by the fibers attached to the cottonseed skin. The number of neps is an index to evaluate the grade of raw cotton. The raw cotton with low grade has high content of impurities and defects, fine fiber, poor maturity and many neps formed in the production process. Therefore, the amount of neps and impurities in different raw materials is not comparable, and can not be used to measure the performance of the spinning machine.
2. It is caused in the process of processing.
It includes neps caused by ginning in the process of raw cotton rough processing and spinning, mainly neps produced by saw tooth ginning machine, neps caused in the process of spinning, including neps formed by slack fiber, friction resistance of fiber channel and neps formed by sticking, winding, blocking and hanging, as well as neps produced by hook fiber in the process of drafting.
There are mainly two reasons for neps. In order to avoid such neps, we need to start from these two aspects. We need to select high-quality raw materials, carefully screen and handle the raw materials. At the same time, we should strictly control every link in the processing process and pay attention to the details, so as to reduce the occurrence of neps.
