The welding roll has influence to the overlap, especially for long cans!
The position of the welding roll (WR) has an influence on the overlap at the beginning and at the end.
|WR slightly too high||= Overlap at the beginning less|
|WR slightly too low||= Overlap at the beginning constant|
|WR higher||= Overlap at the end better|
|WR lower||= Overlap at the end less|
|WR lower||= Overlap at the beginning less|
If you still couldn’t resolve the problem, read more at: I have problems to keep a constant overlap