Thursday, June 3, 2010

Purging Tip of the Week: #14

When purging extrusion blow molding systems that are equipped with accumulators or accumulator heads, you have to be certain that the purging material has effective access to these components.

If the less than 100% of the accumulator's capacity is being used, increase the set point(s) by about 10% of capacity. Run the accumulators on automatic while loading the system with purging material, allowing them to cycle at least twice (four times is better). This will ensure that they are entirely filled with purging material, and will increase the likelihood of having a fully successful purge.

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