Clamp Tonnage - The resultant value of the pressure distribution over the entire part.
Clamp Tonnage - The resultant value of the pressure distribution over the entire part. It is a history of the force resultant from filling and packing pressure that acts to open the mold. A good clamp tonnage history result should show that the maximum clamp tonnage applied is not more than approximately 80% of the machine limit, allowing 20% as a safety factor.
Percent Frozen - The thickness of the frozen layer as a percentage of the wall thickness, at the end of fill or pack. This result can help determine if the part or gate is sufficiently frozen at the end of packing to make sure the part is adequately packed. It can also help determine part design problems with thin areas.
Pressure Profile – A time series history of the actual pressure at the nozzle showing the pressure during both filling and packing phases of the molding cycle. A profiled packing pressure is often used during the packing phase to make the shrinkage more uniform across the part.
Volumetric Shrinkage – Not to be confused with linear shrinkage, it is the shrinkage for each area as a percent of the original volume. It should be uniform across the part to reduce warpage, and should be less than the recommended maximum value for the material. As a rough guide, volumetric shrinkage is 3 X linear shrinkage. This can also be used to detect sink marks. Negative values indicate over-packing.