Do you have any of these problems:

A groove wearing on the inside head angle of the lower punch

High tablet ejection pressure

Powder buildup on the relief area of the lower punch

Such problems can be attributed to:

Material adhering to the die cavity

The lower punch is not clearing excess powder from the die cavity

Sometimes the powder is just sticky and wants to adhere to the lower punch relief area and die cavity.

Although there may be a number of causes for this occurrence, check the sharpness of the tip straight's trailing edge.

Instruct your maintenance personnel to not polish or round off this edge .
Instruct your tool vendor to keep this edge sharp .

When this edge is rounded off it will not properly remove any excess powder that may accumulate on the die cavity, and allow powder to collect behind the tip straight. Lower punch inside angle head wear increases as powder accumulates in all areas.

Our tip is to add a bake lite relief at the end of the tip straight, this will help to maintain a sharp edge and reduce material buildup on the relief area.

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