Explore What’s Possible Case Study (Snapshot) Case Study (Snapshot)

Explore What's Possible Case Study (Snapshot) Case Study (Snapshot)

Explore What's Possible Case Study (Snapshot) Case Study (Snapshot)

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If the part begins to flash and there are still sinks, the problem is most likely not insufficient hold pressure, but rather could be material related Gate Freeze Study The gate freeze study is performed to conclude at what time the gate freezes. Gate Freeze Time = 4 seconds, 4+1 = 5, Hold Time = 5 seconds • Figure 45 shows an example of the gate freeze study. This type of packing is what gives the part a good surface finish.

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Typical maximum residence time should be 8 - 10 minutes at processing temperature. Organic pigments used to produce yellow, red, blue and green colors are more likely to burnout or lighten after prolonged residence time or high regrind utilization. In order to reduce the residence time at high temperature, reduce the temperatures in the rear of the injection unit as much as possible and only keep the last zone and nozzle at the high processing temperature.

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