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Experiments in Fluids

Erschienen in:

01.01.2006 | Research Article

High-speed roll coating with complex rheology fluids

verfasst von: G. Ascanio, P. J. Carreau, P. A. Tanguy

Erschienen in: Experiments in Fluids | Ausgabe 1/2006

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Abstract

The flow of high solids content suspensions and coating colors through the deformable gap of counter-rotating rolls at high speed was investigated. Measurements of nip pressure profiles in a laboratory film coater were conducted and flow visualization experiments downstream the nip were carried out. A high-speed video system allowed showing the formation, elongation and break up of filaments that yield the misting droplets. The role of rheology on misting was also investigated using shear and extensional data. Results show that misting, mainly generated by film splitting, is reduced when the extensional viscosity of the color is larger.

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Titel: High-speed roll coating with complex rheology fluids
verfasst von: G. Ascanio
P. J. Carreau
P. A. Tanguy
Publikationsdatum: 01.01.2006
Verlag: Springer-Verlag
Erschienen in: Experiments in Fluids / Ausgabe 1/2006
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI: https://doi.org/10.1007/s00348-005-0025-5

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