![]() Which necklace would go down the drain easier? The plain chain, right? That’s the same idea with viscosity - with low viscosity, the molecules are lined up in a plain, simple chain. Picture a plain chain necklace and a necklace with a lot of large beads on it. The higher the viscosity, the more friction exists, so the more pressure you need to inject it into a mould. Viscosity is a fluid’s resistance to flow or the amount of friction that exists in the material. This article covers the definition and characteristics of viscosity, why it’s important to monitor viscosity and how to measure viscosity. If 90% of our issues come back to viscosity by the student’s estimation, it sure would make sense to track it. If the viscosity of the material was either consistent or predictable, this whole injection moulding thing would be easy. We like asking why things happen, and quite often, viscosity is indeed the answer. ![]() ![]() In this blog, process support and training provider RJG explains what viscosity is, why it’s important, and how it’s measured.Ī student once joked that “9 out of 10 times when you ask a question, the answer is viscosity.” While it’s probably not quite 9 out of 10, the student did have a point. Viscosity is one of those tricky things that can throw off part quality if you don’t account for it.
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