Entrained air films in center wound rolls - with and without the nip
Abstract
Development of analytical expressions predicting the thickness of fluid layers in the area of a foil bearing has been ongoing for nearly forty years. These expressions have been adapted to include air as the lubricating medium for use in predicting layer separation in wound rolls or for predicting the floating height of a web over a roller. An experimental technique has been perfected to study the air entrainment in wound rolls of web material. This paper will focus on providing proof regarding what expressions should be employed and how they are used to model the amount of air which is entrained in centerwinding, with or without an impinging nip.
Citation
Taylor, R. M., & Good, J. K. (1997, June). Entrained air films in center wound rolls - with and without the nip. Paper presented at the Fourth International Conference on Web Handling (IWEB), Stillwater, OK.