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To Introduce the common molding defects to the 3 rd  floor operator & inspector  Production Operators & QA Inspector play a very important role in ensuring the quality of the product Production Operators & QA Inspector need to refer the Quality Guide of the product if there is any unsure defect detected Take the defect part for QC to confirm whether can take or cannot if the      defects not stated in the Quality Guide

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Occur when the plastic housing is smaller than the pin, this will cause silver Occur when the barrel temperature is too high Alert technician  for the issue & down mold repair if required.

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Mostly caused by the injection pressure too high that may force the excessive plastic out from the mold.  Alert technician for the issue & down mold repair if required.

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Occur due to the EP area start to corrode, cause the EP flashing  Alert technician  for the issue & down mold repair if required.

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Mostly caused by the insufficient material flow rate which cannot fill up the mold entirely.      (Plastic not pack enough) Alert technician  for the issue & down mold repair if required.

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Occur during the gating cutting process. Operator need to check the gating condition properly before packing.   If the De-gating device got any issue,  Alert technician  After the De-gating process, remember to check the cutting condition.

Common molding defect –  gating excess material

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When there is any insert broken, the part will have the excess plastic molded together with the product.  Stop machine & down mold for repair.

Common molding defect  Pin / Insert broken

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Mostly occur during the housing bushing pressing process Alert technician or leader if there is a lot of parts with the bushing pressing issue.

Common molding defect   bushing pressing ng

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Mostly caused by missing checking of the missing bushing.  After the bushing pressing process, checking of the missing bushing is needed.

Common molding defect – missing bushing

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Mainly cause because the temperature of the mold is too high. Alert technician for the issue & down mold repair if required.

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Mostly cause by the mold lifter or insert issue.  Also may caused by the part hit by outer force that cause the broken issue.  Alert technician for the issue & down mold repair if required.

Common molding defect – Pin / rib broken

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Mostly caused by the part being hit or dropped after the mold open.  Protection is needed for all the products that use auto-drop system after the mold open. Part that dropped on the floor will considered as dented

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Mostly caused by the part being hit or dropped after the mold open.  Protection is needed for all the products that use auto-drop system after the mold open.

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Mostly caused by the part being hit or dropped after the mold open.  Protection is needed for all the products that use auto-drop system after the mold open. Down mold if repair is needed

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Mostly caused by the cooling time is not enough that make the surface of the part split open.  Alert technician for the issue & down mold repair if required.

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Mostly caused by the tooling wear & tear or being scratch by force.  Stop machine & down mold for repair.

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Most Common Molding Defects in the Production Line. Operator & QA must inform technician immediately if there is any molding defect finding on the products.  Do not act like nothing happen or keep quiet on the part defects finding.  If there is any rejection, sorting & rework of the rejected parts will only wasting time & money.

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