Why does Recovery Matter?

In a recent discussion, one technician asked me this…

Why bother optimizing recovery? We typically set each machine to 100 RPM.
My Response
There are three major reasons: 1) Setting the process to produce a specified melt temperature provides a more predictable viscosity 2) Determining the optimal rear zone temperature ensures the most consistent and reliable material feed 3) Slowing the screw consume only 80% of the cooing time helps prevent degradation while maximizing conductive material heating.
Additional Thoughts
The process of screw recovery has a large impact on the efficiency and consistency of the process. This will help reduce scrap rate and energy consumption.

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