Troubleshooting - Nytex

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Taiwan Shanghai U.S.A.

Troubleshooting

Nytex thermal conductive polymer offers electric insulating thermal conductive properties with UL-RTI certification. This material performs high productivity, easily processed, flame retardant and outstanding thermal conducting characteristics. It could be applied in various industries such as LED indoor and outdoor lighting、heat sink of surveillance camera、IT products、battery holder、automobile work light and IC heat dissipation solution.

We also provide engineering support to work with our partners for better material recommendation.

Flash

Machine/Pressure Related Causes

1. Decrease Injection Pressure
2. Increase Clamp Pressure
3. Increase Clamp Pressure
4. Decrease Cylinder Temperature
5. Decrease Injection Speed
6. Decrease Cycle Time

Mold Related Causes

Resin Related Causes

Short Shots

Machine/Pressure Related Causes

1. Increase Injection Pressure
2. Increase Cylinder Temperature
3. Increase Feed Setting
4. Increase Injection Speed
5. Increase Back Pressure

Mold Related Causes

1. Decrease Gate Land Area
2. Use Larger Opening in Nozzle
3. Increase Runner, Gate or Sprue Size
4. Add More Gas Vents
5. Change Gate Location
6. Increase Mold Temperature

Resin Related Causes

1. Resin Overdried

Discoloration

Machine/Pressure Related Causes

1. Decrease Cylinder Temperature
2. Decrease Injection Speed
3. Decrease Back Pressure

Mold Related Causes

Resin Related Causes

1. Resin is not Heat Stabilized

Poor Surface Finish

Machine/Pressure Related Causes

1. Increase Cylinder Temperature

Mold Related Causes

1. Clean Cavity Surfaces
2. Increase Mold Temperature

Resin Related Causes

1. Resin Wet
2. Resin Contaminated

Sink Marks

Machine/Pressure Related Causes

1. Increase Injection Pressure
2. Increase Injection Hold Time
3. Decrease Melt Temperature
4. Increase Injection Time
5. Increase Cooling Time
6. Decrease Injection Speed

Mold Related Causes

1. Increase Runner, Gate or Sprue Size

Resin Related Causes

1. Resin Overdried

Silver Streak

Machine/Pressure Related Causes

1. Decrease Cylinder Temperature
2. Decrease Injection Speed
3. Decrease Injection Pressure

Mold Related Causes

1. Increase Mold Temperature
2. Increase Gate Size

Resin Related Causes

1. Resin Wet
2. Resin Contaminated

Surface Blisters

Machine/Pressure Related Causes

1. Decrease Injection Pressure
2. Decrease Cylinder Temperature
3. Increase Back Pressure

Mold Related Causes

1. Change Gate Location
2. Add More Gas Vent

Resin Related Causes

1. Resin Wet
2. Resin Contaminated

Delamination

Machine/Pressure Related Causes

1. Increase Cylinder Temperature
2. Decrease Injection Pressure
3. Increase Injection Speed

Mold Related Causes

1. Increase Gate Size
2. Increase Mold Temperature

Resin Related Causes

1. Resin Contaminated

Warpage

Machine/Pressure Related Causes

1. Decrease Injection Pressure
2. Decrease Injection Speed
3. Decrease Injection Hold Time
4. Increase Cooling Time
5. Decrease Cylinder Temperature

Mold Related Causes

1. Decrease Mold Temperature
2. Redesign Ejection Mechanism
3. Change Gate Location

Resin Related Causes

Flow Mark

Machine/Pressure Related Causes

1. Increase Cylinder Temperature
2. Increase Injection Pressure
3. Increase Injection Speed
4. Increase Injection Hold Time
5. Increase Nozzle Temperature

Mold Related Causes

1. Increase Mold Temperature
2. Increase Gate Size
3. Add More Gas Vents
4. Uneven Mold Temperature

Resin Related Causes

1. Resin Contaminated

Brittleness

Machine/Pressure Related Causes

1. Decrease Cylinder Temperature
2. Decrease Injection Pressure
3. Decrease Injection Hold Time

Mold Related Causes

1. Redesign Ejection Mechanism
2. Increase Mold Temperature

Resin Related Causes

1. Resin Wet

Burn Marks

Machine/Pressure Related Causes

1. Decrease Cylinder Temperature
2. Decrease Injection Speed
3. Decrease Injection Pressure
4. Decrease Back Pressure

Mold Related Causes

1. Increase Gate Size
2. Add More Gas Vents

Resin Related Causes

Weld Lines

Machine/Pressure Related Causes

1. Increase Nozzle Temperature
2. Increase Injection Pressure
3. Increase Injection Speed

Mold Related Causes

1. Increase Runner, Gate or Sprue Size
2. Change Gate Location
3. Increase Mold Temperature
4. Add More Gas Vents

Resin Related Causes

1. Resin Wet

Jetting Mark

Machine/Pressure Related Causes

1. Increase Cylinder Temperature
2. Readjust Injection Speed

Mold Related Causes

1. Increase Gate Size
2. Add More Gas Vents
3. Increase Mold Temperature

Resin Related Causes

1. Resin Wet