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Possible causes
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Suggested solution
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| Injection molding machine |
Injection pressure is too high.
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Lower injection pressure.
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Reduced screw Rod forward time.
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| Mold filling speed is too slow. |
Increase injection speed.
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| Melt glue inconsistencies (melting glue viscosity difference). |
Increase melt glue temperature (increasing after firing tank zone temperature).
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Increase the total cycle time.
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Increasing back-pressure or multi-level back-pressure
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Finnish to make mould plastic on a larger injection moulding machine.
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| Mold |
Injection molded parts from the mold when ejection under high pressure |
Use additional ejector.
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Guaranteed top out after launch to a unified, flat land for process.
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If you need to increase the diameter of the ejector.
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Reduce the speed of ejection.
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| Caused sharp crack on the surface of the mold. |
Cleaning and checking of grain crack caused by mold surface.
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| Metal insert supercooled and or greasy. |
They skim and pre-out insert mold before.
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| Oil traces from extrusion machinery to the mould surface. |
Ejection system to be removed and washed thoroughly, checking hydraulic ejection if there are any leaks.
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| Within the cavity or core is leaking. |
Core-mold cavity, mold or template, check the signs of cracks.
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Check for any leaks caused because the poor quality of rubber ring.
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Gate dimensions too Ambassador plastics packing too much due to excessive pressure.
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Reducing the gate depth.
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