The uneven yarn evenness can be considered from the following aspects:
- The influence of roving quantitative twist coefficient on yarn formation.
- The twist coefficient of spinning yarn has a great correlation with the process production.
- The distance between front and middle roller is related to the balance of grip force and draft force in front zone, the length of floating zone in front zone, and the CV value of yarn evenness.
- Cots directly affect yarn quality.
- Reasonable configuration of drafting process parameters in back zone has great influence on yarn quality.