The Solidified plastic (ejection) result shows how much of the plastic cross-section has solidified at ejection time.

Frozen layer

The plastic melt starts to solidify in the mold cavity wherever it touches the mold wall. The development of the frozen layer is described in this video. When the flow stops, the heat loss through the thickness dominates, resulting in a rapid increase in the thickness of the frozen layer.

Things to look for

When viewing the Solidified plastic (ejection) result, watch for the following:

• The time to reach ejection temperature, for the part as a whole, appears high
• Areas of the part are taking longer to cool, which indicates hot spots.

Using this result

The values for this result range from 0-100%. Ideally the part freezes uniformly and as quickly as possible, to minimnize the cycle time. If regions of the part are not sufficiently frozen when ejected, the process of ejection could cause surface defects, and the part could warp excessively. A polymer is considered to be frozen when the temperature falls below the transition temperature (Ttrans). You can find the transition temperature for your selected material in the Material Properties page of the materials database.

The Solidified plastic (ejection) result is used in conjunction with the Time to ejection temperature result to locate problem areas in the mold.

Next steps

The following options can be used to adjust the time to reach ejection temperature:

To decrease the overall time to reach ejection temperature:

• Decrease the melt temperature
• Decrease the mold temperature
• Increase the injection time.

To decrease the time to ejection in specific areas:

• Where possible, modify the geometry if these regions correspond to thick sections