Cockles
It seems like you are dealing with cockles, which are characterized by a pucker in the liner between the flute tip. This could be due to the excessive adhesive applied between the flute tip or too much heat being applied. Some possible causes and remedies for this issue include:
Causes:
- Glue is too heavy
- Too much heat provided
Remedies:
- Lighten the application of glue
- Increase the speed to reduce the heat provided
By addressing these causes and remedies, you can effectively resolve the issue of cockles and ensure a smooth and effective production process.