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In this application note, The flow behavior of WHITE LABS toothpaste was characterized using the microVISC. The toothpaste exhibited shear thinning behavior and the viscosity was fit to a power law model. A simple analysis confirmed that the measurement shear rate range was relevant to the application of the product which involves extrusion from a tube.
Flow is involved in both the manufacturing and application of toothpaste since each involves pumping or squeezing through a tube. Therefore, measuring viscosity under the appropriate conditions is crucial for predicting processability and performance. Toothpaste can exhibit various types of non-Newtonian behavior ....
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