Influence of back pressure

Set the back pressure low, 2-10%.

Applying back pressure halfway is not good.

We usually recommend ‘repeat metering and discharging’ procedure with small metering strokes. Flow direction change in every stroke with this procedure, and plastics or colors in dead space will be removed effectively.

Apply high back pressure and Letting CELPURGE flow out works also well, however, applying back pressure halfway results in ineffective purging because it leads CELPURGE to an escape from the nozzle.

背圧高すぎ

Apply low back pressure !

Thus we recommend ‘repeat metering and discharging’ procedure with low pressure, 2-10%, in order not to let too much CELPURGE escape from the nozzle.

適切な背圧
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