Transparent products injection common problems in the process of formation and countermeasures

Transparent products products relative to other luster, there will be particularly obvious if appear surface appearance problem.In the process of the injection molding bad ratio is relatively high.


Common trouble spots are air bubble,weld line and black spots.
The following simple parsing the reasons and countermeasures.
1,bubbles,porosity may cause:melt temperature is too high, lead to materials decomposition;Low injection pressure,mold temperature,holding time short lead to bad materials for the products;Insufficient material drying, impurities in molten material inside the foreign body.Improvement countermeasures:appropriate reduce melting temperature,improve the injection pressure,mold temperature and the holding time.Material is fully dry.

2,welding scar, possible reasons:low melting temperature,mold temperature, injection pressure,the holding time is insufficient,lead to poor liquidity in the molten material in the cavity;Mold venting is not good;Design of gate location is not reasonable to improve countermeasures:to provide the molten material,mold temperature,injection pressure increased time,is the rapid filling material.Increase exhaust slot,redesigned into glue.

3,black spots may cause: materials of impurities;Melt temperature Settings,which leads to the materials decomposition;Gun barrel and stagnation expected nozzle segment.
To improve countermeasures: material thoroughly remove replacement, melting temperature appropriate adjustments,cleaning gun barrel and the nozzle.

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