In injection molding, the viscosity describes the flow resistance of the plastic in the cavity.
Higher slow-moving of the material means higher viscosity.
Flow curves show that the viscosity of a plastic varies by different shear rates and temperatures.
These curves need to be measured with the help of a viscometer or rheometer.

Viscosity in Plastic Industry

Plastic: The temperature curves describe the viscosity over shear rate.

Related topics:

pvT – Diagram

This glossary of plastic industry is provided by PLEXPERT Canada Inc.
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