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Possible cause
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Recommendations to resolve
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Injection molding machine
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1.Melt surface temperature is too high.
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Reduce injection cylinder temperature.
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2.Plastic stranded in cylinder of injection is taking too long.
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1.Reduce the total cycle time.
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2. Injection volume on injection molding machines is too small.
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3.Melt temperature is too low casues mold filling time unstable.
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1.Increase injection cylinder temperatures.
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2.Increased jet nozzle temperature.
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3.Increase mold filling velocity.
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4.Not enough injection pressure.
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Increase injection pressure.
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5.Inaccurate temperature controller, control was mixed.
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Check the temperature controller for precision and control.
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Mold
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1.Mold surface temperature is too low.
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1.Increase mold temperature.
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2.Limit the speed of coolant flow through the die.
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2.Injection molded parts have some no-plastic-plastic.
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1.Increase the size of cold material hole.
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2.Extended tail to form additional cold stream hole.
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3.Electric heats nozzle and note muzzle.
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3.Runner and gate length is too small or too long, plastic at the time of delivery caused by condensation.
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If necessary, increase the runner diameter and depth of the gate.
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4.Too many release agents on mold surface.
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Thoroughly clean mould surface with white alcohol.
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