Tuesday, June 15, 2010

Purging Tip of the Week: #15

In extrusion systems, downstream plumbing and auxiliary components often provide places for material to hang up, acquire excess heat history and degrade. Mechanical screen changers, filters, melt pumps, static mixers, flow dividers and connector pipes are all potential problem areas. Don't focus on the die and neglect these other potential problem areas.

Ensure that they are thoroughly cleaned; if using a chemical purging product, consider raising the temperature at these components to maximize purging effectiveness.

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