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F. Vidal, J.C. Pommier, J. Pouyet
The need to understand coating colors behavior at high shear rates (106 s-1) has lead the paper industry to investigate complex methods of rheological measurement. The well known capillary viscometer uses a circular geometry. A new original idea consists in changing the blade into a rheometer integrated at the coating head. Design of this new device and calculations were made considering the blade nip as a rectangular slit. Results from trials on papeteries de Condat pilot coater were then compared with capillary viscometer measurements. Thus we will be able to connect runnability problems with coating color viscous behavior.
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Sponsored by the Recovery Boiler Program R&D Subcommittee of the American Forest & Paper Association (AF&PA) and published by TAPPI Press.
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TAPPI Press offers some of the most in-depth resources and references for the forest products and related industries.
Available for Purchase – Conference Proceedings
TAPPI maintains a record of key conference papers, presentations, and other conference publications, available for purchase in a variety of formats.
High-Shear Rheological Measurement for Coating Colors: A New Approach, 1993 Coating Conference Proce