Modeling the flow of plastisol between the doctor blade and the cylinder
Investigation of the Plastisol Knife-over-Roll Coating Process

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Modeling the flow of plastisol between the doctor blade and the cylinder
Investigation of the Plastisol Knife-over-Roll Coating Process

Authors : Jean-François AGASSANT, Yves DEMAY

Publication date: April 10, 2026 | Lire en français

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3. Modeling the flow of plastisol between the doctor blade and the cylinder

3.1 The Challenges of Standard Flow Modeling

It is necessary to adapt the classical modeling of hydrodynamic lubrication approximations as described in [AM 3 110] . A velocity-pressure model is not feasible. Indeed, as shown, for example, in Figure 6 , a single viscosity value can correspond to several shear rates. On the other hand, it is observed that the shear stress is a monotonically increasing function of the shear rate (Figure...

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