How can thickness fluctuations be avoided at right angles to machine direction?

This fault points to various possible causes:

1. Bead not ideal

Remedy:
Check bead, keep as small as possible (adjust by means of restrictor bar)

2. Temperature differences at the die

Remedy:
Check die temperature for fluctuations, adjust to uniform temperature

3. Rolls not optimally aligned

Remedy:
Align calender rolls

back