The cause-temperature flow temperature, mold and injection speed too low. -Plastic flexible yet completely. -Exhaust valve system is inconsistent: the air in the mold don't get rid of it. -Product thickness is too small or too long. -Lack of raw material (screw cruise settings is not enough). -Low injection pressure. The surface of the mold not lustrous should hinder the flow. How to fix -Increase the flow temperature or the temperature of the mold together with injection speed. -Increase spray volume (the volume is too small, no-spray buffer zone). -Install the fit between the injection volume and injection pressure, pressure spray. -Improves exhaust valve system, reduce the clamping force of the mold. -Increase the size of system (runner). -If low mold temperature, then increase the temperature of the mold.
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