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Common problems in mold trial 1: The main runner sticks to the mold

The method and sequence of solving the problem:

1. Polish the main runner → 2. The nozzle coincides with the mold center → 3. Reduce the mold temperature → 4. Shorten the injection time → 5. Increase the cooling time → 6. Check the nozzle heating ring → 7. Polish the mold surface → 8. Check the material Whether it is polluted

Common problem in mold trial 2: Difficulty in demolding plastic parts

The method and sequence of solving the problem:

1. Reduce the injection pressure → 2. Shorten the injection time → 3. Increase the cooling time → 4. Reduce the mold temperature → 5. Polish the mold surface → 6. Increase the draft angle → 7. Reduce the gap between the inserts

Common problem in mold trial 3: Poor dimensional stability

The method and sequence of solving the problem:

1. Change barrel temperature → 2. Increase injection time → 3. Increase injection pressure → 4. Change screw back pressure → 5. Increase mold temperature → 6. Decrease mold temperature → 7. Adjust feed amount → 8. Decrease Small recycle ratio

Frequently Asked Question 4: Surface Corrugation

The method and sequence of solving the problem:

1. Adjust the feed volume → 2. Increase the mold temperature → 3. Increase the injection time → 4. Increase the injection pressure → 5. Increase the material temperature → 6. Increase the injection speed → 7. Increase the size of the runner and gate

Common problem in mold trial 5: warpage and deformation of plastic parts

The method and sequence of solving the problem:

1. Lower the mold → 2. Lower the material temperature → 3. Increase the cooling time → 4. Reduce the injection speed → 5. Reduce the injection pressure → 6. Increase the screw back pressure → 7. Shorten the injection time

Common problem 6 during mold trial: peeling and delamination of plastic parts

The method and order of solving the problem:

1. Check the type and level of plastic → 2. Check whether the material is contaminated → 3. Increase the mold temperature → 4. Material drying treatment → 5. Increase the material temperature → 6. Reduce the injection speed → 7. Shorten the gate length → 8. Reduce Small injection pressure → 9. Change gate position → 10. Adopt large hole nozzle

Common problem in mold trial 7: sticking of silver wire pattern runner

The method and sequence of solving the problem:

1. Reduce the temperature of the material → 2. Dry the material → 3. Increase the injection pressure → 4. Increase the gate size → 5. Check the type and level of the plastic → 6. Check whether the plastic is polluted

Common problem 8 during mold trial: Poor surface gloss

The method and sequence of solving the problem:

1. Material drying treatment → 2. Check whether the material is contaminated → 3. Increase the material temperature → 4. Increase the injection pressure → 5. Increase the mold temperature → 6. Polish the mold surface → 7. Increase the size of the runner and gate

Frequently Asked Questions in the Trial Mold 9: Dent

The method and sequence of solving the problem:

1. Adjust the amount of feed → 2. Increase the injection pressure → 3. Increase the injection time → 4. Decrease the material speed → 5. Decrease the mold temperature → 6. Increase the vent → 7. Increase the runner and gate size → 8. Shorten the length of the runner → 9. Change the gate position → 10. Reduce the injection pressure → 11. Increase the screw back pressure

Frequently Asked Question 10: Bubbles

The method and sequence of solving the problem:

1. Material drying → 2. Reduce material temperature → 3. Increase injection pressure → 4. Increase injection time → 5. Increase mold temperature → 6. Decrease injection speed → 7. Increase screw back pressure

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