Calender Rolls Seem to be Erratic? Check for Roll Eccentricity!
Calender rolls must be round and free of run-out at ambient temperature. Any run-out of the individual calender rolls will be amplified as the high spots and low spots periodically match up between the roll pairs. Differences between high and low spots is relatively easy to check with dial indicators. How to: Run the calender without rubber (or your product) Make Sure there is a slight gap between the rolls. Check the... --more