The welding roll has influence to the overlap, especially with 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


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