Gloss problem of injection molded parts

After molding, the surface of the plastic part loses the original luster of the material, or a milky white film is formed on the surface, which is called poor surface gloss.

Analysis of the reasons for the dull surface of the product and the reasons for the improvement methods

Increase mold temperature or material temperature (improve replication)

Increase the holding pressure/time or increase the back pressure appropriately

Control the amount of release agent and wipe it clean

Wipe clean water or oil and check for leaks

Mold polishing or removing glue stains

Remove mold dirt/glue stains in the mold cavity

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Reduce the melt temperature or reduce the residual quantity

Increase the size of runners and gates

Increase the injection speed or improve the cooling system

Thoroughly clean the barrel

Related issues with metal inserts

After molding, the surface of the plastic part loses the original luster of the material, or a milky white film is formed on the surface, which is called poor surface gloss.

Analysis of the reasons for the dull surface of the product and the reasons for the improvement methods

Increase mold temperature or material temperature (improve replication)

Increase the holding pressure/time or increase the back pressure appropriately

Control the amount of release agent and wipe it clean

Wipe clean water or oil and check for leaks

 Mold polishing or removing glue stains

Fully dry the ingredients

Remove mold dirt/glue stains in the mold cavity

Reduce the melt temperature or reduce the residual quantity

Increase the size of runners and gates

Increase the injection speed or improve the cooling system

Thoroughly clean the barrel