INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Systematic study of coating systems with two rotating rolls
Autor/es:
F.BALZAROTTI Y; M.ROSEN.
Revista:
LATIN AMERICAN APPLIED RESEARCH
Editorial:
PLAPIQUI(UNS-CONICET)
Referencias:
Año: 2009 vol. 39 p. 99 - 104
ISSN:
0327-0793
Resumen:
Abstract The coating method called Roll Coatingis one of the most widely used in industry andconsists in the application of fluids through rotatingrolls. In this work we examine the system of two cylindersin rotation. The aim of this presentation is tocharacterize this system of two cylinders for differentratio of velocities (s) and gap configurations, inorder to build a phase diagram that identifies theresulting thickness for each set of operation parametervalues. Resulting thicknesses were contrastedwith classical models to test its validity limits. Theclassical models, which are based on the Theory ofLubrication, and their corresponding simplifyinghypotheses, let us demonstrate the significant dependencyof the outlet thicknesses with regard to thegap and the velocity ratio and the modified Capillarynumber β. When the amount of fluid dragged increases,an irregular V-shaped cross-site wave appears,repeated quasiperiodically down-web (Cascadeeffect), indicating the region of parameters inwhich the phenomenon is present.
