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Warpage Part Distortion

1. Reduce temperature of plastic material
2. Extend mold closing time
3. Check if temperature of both core and cavity molds is the same
4. Check if finished parts are placed properly as well as all the JIG used
5. Increase injection pressure and cooling time

 

Poor Dimensional control

1. Decrease the number of mold cavity
2. Enlarger material feeding place
3. Balance the disposition of runners, gates and cavities
4. Adjust a fixed cycling time
5. check the pressuring and electricity system of the injection machine

 

Voids

1. Reduce injection speed
2. Increase injection pressure
3. Increase mold temperature
4. Enlarge the gate, major runners and minor runners
5. Check if materials are pre-dried properly
6. Lower pipe temperature

 

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