Having problems with film blocking and roll shifting/cinhing due to change in pressures?
Download this paper! Rolls of films are routinely stored under varying conditions before being unwound into downstream operations. During storage, interlayer can change relative to the pressures generated during winding which leads to problems such as film blocking and roll shifting/cinching. The main objective of this paper is to:
- Present a model that combines the effects of air entrainment during pressure roll centerwinding with the thermoelastic effect after winding.
- Methods to measure the inputs are discussed
- Experimental results validating the winding model are presented