The irregular motion of short fibers, wave like formation in the sliver between pairs of roller is called Drafting Wave. The main causes of Drafting Wave are:
1. Short
fiber.
2. Nip
to nip distance is greater then fiber length.
3. In
carded yarn fiber are not parallel.
4. Wider
roller setting.
5. High
percentage of short fiber.
Distance between two rollers that is Roller
setting:
